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Rexhaj F, Sabel N, Robertson A, Lundgren T. Proteomic profiling of human dental enamel affected by molar incisor hypomineralisation of different clinical severity grades: an in vitro study. Eur Arch Paediatr Dent 2024; 25:533-545. [PMID: 38842758 DOI: 10.1007/s40368-024-00911-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 05/13/2024] [Indexed: 06/07/2024]
Abstract
PURPOSE The aim of this study was to explore the potential to profile and distinguish varying clinical severity grades of MIH, compared to normal enamel, using proteomics. METHODS Liquid chromatography-mass spectrometry analyses were conducted on enamel samples of extracted teeth, from 11 children and adolescents, spanning an age range of 6-18 years. Enamel powder samples were collected from extracted, third molars (n = 3) and first permanent molars diagnosed with MIH (n = 8). The MIH tooth samples were categorized into subgroups based on clinical severity grade. The data were statistically analyzed using ANOVA and Welch's t test. RESULTS Teeth affected by MIH exhibited a diverse array of proteins, each with different functions related to dental enamel, distinguishing them from their normal enamel counterparts. The application of microdissection combined with LC-MS techniques has revealed the potential to discern unique proteomic profiles among MIH-affected teeth, characterized by varying clinical severity grades. Both analyzed MIH groups displayed consistent trends in the presentation of biological processes, including underabundance of proteins primarily associated with cell organization and biogenesis. Furthermore, proteins linked to cell death were overabundant in both MIH groups. CONCLUSION Proteomics enabled the detection and differentiation of various proteins across different clinical severity grades of MIH.
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Affiliation(s)
- F Rexhaj
- Department of Pediatric Dentistry, Institute of Odontology at the Sahlgrenska Academy, University of Gothenburg, P. O. Box 450, 40530, Göteborg, Sweden.
| | - N Sabel
- Department of Pediatric Dentistry, Institute of Odontology at the Sahlgrenska Academy, University of Gothenburg, P. O. Box 450, 40530, Göteborg, Sweden
| | - A Robertson
- Department of Pediatric Dentistry, Institute of Odontology at the Sahlgrenska Academy, University of Gothenburg, P. O. Box 450, 40530, Göteborg, Sweden
| | - T Lundgren
- Department of Pediatric Dentistry, Institute of Odontology at the Sahlgrenska Academy, University of Gothenburg, P. O. Box 450, 40530, Göteborg, Sweden
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Hermans F, Hasevoets S, Vankelecom H, Bronckaers A, Lambrichts I. From Pluripotent Stem Cells to Organoids and Bioprinting: Recent Advances in Dental Epithelium and Ameloblast Models to Study Tooth Biology and Regeneration. Stem Cell Rev Rep 2024; 20:1184-1199. [PMID: 38498295 PMCID: PMC11222197 DOI: 10.1007/s12015-024-10702-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/20/2024] [Indexed: 03/20/2024]
Abstract
Ameloblasts are the specialized dental epithelial cell type responsible for enamel formation. Following completion of enamel development in humans, ameloblasts are lost and biological repair or regeneration of enamel is not possible. In the past, in vitro models to study dental epithelium and ameloblast biology were limited to freshly isolated primary cells or immortalized cell lines, both with limited translational potential. In recent years, large strides have been made with the development of induced pluripotent stem cell and organoid models of this essential dental lineage - both enabling modeling of human dental epithelium. Upon induction with several different signaling factors (such as transforming growth factor and bone morphogenetic proteins) these models display elevated expression of ameloblast markers and enamel matrix proteins. The advent of 3D bioprinting, and its potential combination with these advanced cellular tools, is poised to revolutionize the field - and its potential for tissue engineering, regenerative and personalized medicine. As the advancements in these technologies are rapidly evolving, we evaluate the current state-of-the-art regarding in vitro cell culture models of dental epithelium and ameloblast lineage with a particular focus toward their applicability for translational tissue engineering and regenerative/personalized medicine.
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Affiliation(s)
- Florian Hermans
- Department of Cardiology and Organ Systems (COS), Biomedical Research Institute (BIOMED), Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, 3590, Belgium.
| | - Steffie Hasevoets
- Department of Cardiology and Organ Systems (COS), Biomedical Research Institute (BIOMED), Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, 3590, Belgium
| | - Hugo Vankelecom
- Laboratory of Tissue Plasticity in Health and Disease, Cluster of Stem Cell and Developmental Biology, Department of Development and Regeneration, KU Leuven, Leuven, 3000, Belgium
| | - Annelies Bronckaers
- Department of Cardiology and Organ Systems (COS), Biomedical Research Institute (BIOMED), Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, 3590, Belgium
| | - Ivo Lambrichts
- Department of Cardiology and Organ Systems (COS), Biomedical Research Institute (BIOMED), Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, 3590, Belgium.
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3
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Sunohara M, Morikawa S, Shimada K, Suzuki K. Spatiotemporal expression profiles of c-Mpl mRNA in the tooth germ: Comparative expression dynamics of vascularization-related genes. Ann Anat 2024; 253:152227. [PMID: 38336176 DOI: 10.1016/j.aanat.2024.152227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 12/06/2023] [Accepted: 02/05/2024] [Indexed: 02/12/2024]
Abstract
BACKGROUND Vascularization is an essential event for both embryonic organ development and tissue repair in adults. During mouse tooth development, endothelial cells migrate into dental papilla during the cap stage, and form blood vessels through angiogenesis. Megakaryocytes and/or platelets, as other hematopoietic cells, express angiogenic molecules and can promote angiogenesis in adult tissues. However, it remains unknown which cells are responsible for attracting and leading blood vessels through the dental papilla during tooth development. METHODS Here we analyzed the spatiotemporal expression of c-Mpl mRNA in developing molar teeth of fetal mice. Expression patterns were then compared with those of several markers of hematopoietic cells as well as of angiogenic elements including CD41, erythropoietin receptor, CD34, angiopoietin-1 (Ang-1), Tie-2, and vascular endothelial growth factor receptor2 (VEGFR2) through in situ hybridization or immunohistochemistry. RESULTS Cells expressing c-Mpl mRNA was found in several parts of the developing tooth germ, including the peridental mesenchyme, dental papilla, enamel organ, and dental lamina. This expression occurred in a spatiotemporally controlled fashion. CD41-expressing cells were not detected during tooth development. The spatiotemporal expression pattern of c-Mpl mRNA in the dental papilla was similar to that of Ang-1, which preceded invasion of endothelial cells. Eventually, at the early bell stage, the c-Mpl mRNA signal was detected in morphologically differentiating odontoblasts that accumulated in the periphery of the dental papilla along the inner enamel epithelium layer of the future cusp region. CONCLUSION During tooth development, several kinds of cells express c-Mpl mRNA in a spatiotemporally controlled fashion, including differentiating odontoblasts. We hypothesize that c-Mpl-expressing cells appearing in the forming dental papilla at the cap stage are odontoblast progenitor cells that migrate to the site of odontoblast differentiation. There they attract vascular endothelial cells into the forming dental papilla and lead cells toward the inner enamel epithelium layer through production of angiogenic molecules (e.g., Ang-1) during migration to the site of differentiation. C-Mpl may regulate apoptosis and/or proliferation of expressing cells in order to execute normal development of the tooth.
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Affiliation(s)
- Masataka Sunohara
- Department of Anatomy, School of Life Dentistry at Tokyo, The Nippon Dental University, Tokyo, Japan.
| | - Shigeru Morikawa
- Department of Veterinary Science, National Institute of Infectious Diseases, Tokyo, Japan
| | - Kazuto Shimada
- Department of Anatomy, School of Life Dentistry at Tokyo, The Nippon Dental University, Tokyo, Japan
| | - Kingo Suzuki
- Department of Anatomy, School of Life Dentistry at Tokyo, The Nippon Dental University, Tokyo, Japan
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4
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Karaman GE, Ünal İ, Beler M, Üstündağ FD, Cansız D, Üstündağ ÜV, Emekli-Alturfan E, Akyüz S. Toothpastes for children and their detergent contents affect molecular mechanisms of odontogenesis in zebrafish embryos. Drug Chem Toxicol 2024; 47:15-25. [PMID: 36444776 DOI: 10.1080/01480545.2022.2150208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 09/29/2022] [Accepted: 11/12/2022] [Indexed: 12/03/2022]
Abstract
We aimed to evaluate how different types of toothpaste (TP) for children affected molecular mechanisms of odontogenesis in zebrafish embryos. Commercially available TPs were selected according to their detergent contents as the cocamidopropyl betaine (CAPB) containing TP (TP1) and sodium lauryl sulfate (SLS) containing TP (TP2). TP3 contained no detergent. Effects of SLS, and CAPB alone were also examined. TP and detergent concentrations affecting development were determined as 750 mg/L and 4 mg/L, respectively. Embryos were exposed to TP1, TP2, TP3, SLS, CAPB, and embryo medium (control) for 72 h post fertilization. Acetylcholinesterase (AChE) activity and oxidant-antioxidant parameters were analyzed spectrophotometrically. Expressions of tooth development genes were evaluated by reverse transcription PCR (RT-PCR). Intraocular distance, lower jaw, and ceratohyal cartilage length were displayed using Alcian Blue staining. axin2 and wnt10a expressions increased in SLS and TP2 groups. igf2a and eve1 expressions decreased in all groups except TP3. nrOb1 expression decreased in TP1, SLS, and CAPB groups. Oxidant-antioxidant balance was disturbed in all groups except TP3, evidenced by increased lipid peroxidation, nitric oxide. SLS, and CAPB groups were more affected in terms of AChE, glutathione-S-transferase, and superoxide dismutase; perturbations were observed in cartilage structures. Altered expression of tooth development gene axin2 correlated with wnt10a, and with changes in cartilage structures in SLS and TP2 groups. TP3 group presented no disruptions in oxidant-antioxidant balance. Our study shows the availability of externally developing zebrafish embryos in examining the effects of TP' contents on embryogenesis.
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Affiliation(s)
- Gözde Ece Karaman
- Department of Paediatric Dentistry, Institute of Health Sciences, Marmara University, Istanbul, Turkey
| | - İsmail Ünal
- Department of Biochemistry, Institute of Health Sciences, Marmara University, Istanbul, Turkey
| | - Merih Beler
- Department of Biochemistry, Institute of Health Sciences, Marmara University, Istanbul, Turkey
| | - Fümet Duygu Üstündağ
- Department of Biophysics, Institute of Health Sciences, Marmara University, Istanbul, Turkey
| | - Derya Cansız
- Department of Biochemistry, Faculty of Medicine, Istanbul Medipol University, Istanbul, Turkey
| | - Ünsal Veli Üstündağ
- Department of Biochemistry, Faculty of Medicine, Istanbul Medipol University, Istanbul, Turkey
| | - Ebru Emekli-Alturfan
- Department of Basic Medical Sciences, Faculty of Dentistry, Marmara University, Istanbul, Turkey
| | - Serap Akyüz
- Department of Paediatric Dentistry, Faculty of Dentistry, Marmara University, Istanbul, Turkey
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5
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Neupane S, Aryal YP, Kwak HJ, Lee SG, Kim TY, Pokharel E, Kim JY, Kim JH, Sohn WJ, An SY, An CH, Jung JK, Ha JH, Yamamoto H, Cho SW, Lee S, Lee Y, Park KK, Min BK, Park C, Kwon TY, Cho SJ, Kim JY. Developmental roles of glomerular epithelial protein-1 in mice molar morphogenesis. Cell Tissue Res 2024; 395:53-62. [PMID: 37985496 DOI: 10.1007/s00441-023-03841-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 10/27/2023] [Indexed: 11/22/2023]
Abstract
Glomerular epithelial protein-1 (Glepp1), a R3 subtype family of receptor-type protein tyrosine phosphatases, plays important role in the activation of Src family kinases and regulates cellular processes such as cell proliferation, differentiation, and apoptosis. In this study, we firstly examined the functional evaluation of Glepp1 in tooth development and morphogenesis. The precise expression level and developmental function of Glepp1 were examined by RT-qPCR, in situ hybridization, and loss and gain of functional study using a range of in vitro organ cultivation methods. Expression of Glepp1 was detected in the developing tooth germs in cap and bell stage of tooth development. Knocking down Glepp1 at E13 for 2 days showed the altered expression levels of tooth development-related signaling molecules, including Bmps, Dspp, Fgf4, Lef1, and Shh. Moreover, transient knock down of Glepp1 revealed alterations in cellular physiology, examined by the localization patterns of Ki67 and E-cadherin. Similarly, knocking down of Glepp1 showed disrupted enamel rod and interrod formation in 3-week renal transplanted teeth. In addition, due to attrition of odontoblastic layers, the expression signals of Dspp and the localization of NESTIN were almost not detected after knock down of Glepp1; however, their expressions were increased after Glepp1 overexpression. Thus, our results suggested that Glepp1 plays modulating roles during odontogenesis by regulating the expression levels of signaling molecules and cellular events to achieve the proper structural formation of hard tissue matrices in mice molar development.
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Affiliation(s)
- Sanjiv Neupane
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu, Korea
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, USA
| | - Yam Prasad Aryal
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Hee-Jin Kwak
- School of Biological Sciences, College of Natural Sciences, Chungbuk National University, Cheongju, Korea
| | - Sung-Gwon Lee
- School of Biological Sciences and Technology, Chonnam National University, Gwangju, Korea
| | - Tae-Young Kim
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Elina Pokharel
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Ji-Youn Kim
- Department of Dental Hygiene, Gachon University, Incheon, Korea
| | - Jung-Hyeuk Kim
- School of Biological Sciences, College of Natural Sciences, Chungbuk National University, Cheongju, Korea
| | - Wern-Joo Sohn
- Pre-Major of Cosmetics and Pharmaceutics, Daegu Haany University, Gyeongsan, Korea
| | - Seo-Young An
- Department of Oral and Maxillofacial Radiology, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Chang-Hyeon An
- Department of Oral and Maxillofacial Radiology, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Jae-Kwang Jung
- Department of Oral Medicine, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Jung-Hong Ha
- Department of Conservative Dentistry, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Hitoshi Yamamoto
- Department of Histology and Developmental Biology, Tokyo Dental College, Tokyo, Japan
| | - Sung-Won Cho
- Division of Anatomy and Developmental Biology, Department of Oral Biology, Yonsei University College of Dentistry, Seoul, Korea
| | - Sanggyu Lee
- School of Life Science, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, Korea
| | - Youngkyun Lee
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Kwang-Kyun Park
- Professor Emeritus Department of Oral Biology, Yonsei University College of Dentistry, Seoul, Korea
| | - Bong-Ki Min
- Center for Research Facilities, Yeungnam University, Gyeongsan, Korea
| | - Chungoo Park
- School of Biological Sciences and Technology, Chonnam National University, Gwangju, Korea
| | - Tae-Yub Kwon
- Department of Dental Biomaterials, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Sung-Jin Cho
- School of Biological Sciences, College of Natural Sciences, Chungbuk National University, Cheongju, Korea.
| | - Jae-Young Kim
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu, Korea.
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Hermans F, Hemeryck L, Bueds C, Torres Pereiro M, Hasevoets S, Kobayashi H, Lambrechts D, Lambrichts I, Bronckaers A, Vankelecom H. Organoids from mouse molar and incisor as new tools to study tooth-specific biology and development. Stem Cell Reports 2023; 18:1166-1181. [PMID: 37084723 DOI: 10.1016/j.stemcr.2023.03.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/22/2023] [Accepted: 03/23/2023] [Indexed: 04/23/2023] Open
Abstract
Organoid models provide powerful tools to study tissue biology and development in a dish. Presently, organoids have not yet been developed from mouse tooth. Here, we established tooth organoids (TOs) from early-postnatal mouse molar and incisor, which are long-term expandable, express dental epithelium stem cell (DESC) markers, and recapitulate key properties of the dental epithelium in a tooth-type-specific manner. TOs display in vitro differentiation capacity toward ameloblast-resembling cells, even more pronounced in assembloids in which dental mesenchymal (pulp) stem cells are combined with the organoid DESCs. Single-cell transcriptomics supports this developmental potential and reveals co-differentiation into junctional epithelium- and odontoblast-/cementoblast-like cells in the assembloids. Finally, TOs survive and show ameloblast-resembling differentiation also in vivo. The developed organoid models provide new tools to study mouse tooth-type-specific biology and development and gain deeper molecular and functional insights that may eventually help to achieve future human biological tooth repair and replacement.
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Affiliation(s)
- Florian Hermans
- Department of Morphology, Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, 3590 Diepenbeek, Belgium; Laboratory of Tissue Plasticity in Health and Disease, Cluster of Stem Cell and Developmental Biology, Department of Development and Regeneration, KU Leuven (University of Leuven), 3000 Leuven, Belgium
| | - Lara Hemeryck
- Laboratory of Tissue Plasticity in Health and Disease, Cluster of Stem Cell and Developmental Biology, Department of Development and Regeneration, KU Leuven (University of Leuven), 3000 Leuven, Belgium
| | - Celine Bueds
- Laboratory of Tissue Plasticity in Health and Disease, Cluster of Stem Cell and Developmental Biology, Department of Development and Regeneration, KU Leuven (University of Leuven), 3000 Leuven, Belgium
| | - Marc Torres Pereiro
- Laboratory of Tissue Plasticity in Health and Disease, Cluster of Stem Cell and Developmental Biology, Department of Development and Regeneration, KU Leuven (University of Leuven), 3000 Leuven, Belgium
| | - Steffie Hasevoets
- Department of Morphology, Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, 3590 Diepenbeek, Belgium
| | - Hiroto Kobayashi
- Department of Anatomy and Structural Science, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Diether Lambrechts
- Center for Cancer Biology, VIB, 3000 Leuven, Belgium; Laboratory for Translational Genetics, Department of Human Genetics, KU Leuven, 3000 Leuven, Belgium
| | - Ivo Lambrichts
- Department of Morphology, Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, 3590 Diepenbeek, Belgium
| | - Annelies Bronckaers
- Department of Morphology, Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, 3590 Diepenbeek, Belgium.
| | - Hugo Vankelecom
- Laboratory of Tissue Plasticity in Health and Disease, Cluster of Stem Cell and Developmental Biology, Department of Development and Regeneration, KU Leuven (University of Leuven), 3000 Leuven, Belgium.
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Anada R, Hara ES, Nagaoka N, Okada M, Kamioka H, Matsumoto T. Important roles of odontoblast membrane phospholipids in early dentin mineralization. J Mater Chem B 2023; 11:657-666. [PMID: 36541228 DOI: 10.1039/d2tb02351b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The objective of this study was to first identify the timing and location of early mineralization of mouse first molar, and subsequently, to characterize the nucleation site for mineral formation in dentin from a materials science viewpoint and evaluate the effect of environmental cues (pH) affecting early dentin formation. Early dentin mineralization in mouse first molars began in the buccal central cusp on post-natal day 0 (P0), and was first hypothesized to involve collagen fibers. However, elemental mapping indicated the co-localization of phospholipids with collagen fibers in the early mineralization area. Co-localization of phosphatidylserine and annexin V, a functional protein that binds to plasma membrane phospholipids, indicated that phospholipids in the pre-dentin matrix were derived from the plasma membrane. A 3-dimensional in vitro biomimetic mineralization assay confirmed that phospholipids from the plasma membrane are critical factors initiating mineralization. Additionally, the direct measurement of the tooth germ pH, indicated it to be alkaline. The alkaline environment markedly enhanced the mineralization of cell membrane phospholipids. These results indicate that cell membrane phospholipids are nucleation sites for mineral formation, and could be important materials for bottom-up approaches aiming for rapid and more complex fabrication of dentin-like structures.
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Affiliation(s)
- Risa Anada
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan. .,Department of Orthodontics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Emilio Satoshi Hara
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.
| | - Noriyuki Nagaoka
- Advanced Research Center for Oral and Craniofacial Sciences, Dental School, Okayama University, Okayama, Japan
| | - Masahiro Okada
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.
| | - Hiroshi Kamioka
- Department of Orthodontics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Takuya Matsumoto
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.
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8
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Zhang H, Gong X, Xu X, Wang X, Sun Y. Tooth number abnormality: from bench to bedside. Int J Oral Sci 2023; 15:5. [PMID: 36604408 PMCID: PMC9816303 DOI: 10.1038/s41368-022-00208-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 09/24/2022] [Accepted: 11/01/2022] [Indexed: 01/07/2023] Open
Abstract
Tooth number abnormality is one of the most common dental developmental diseases, which includes both tooth agenesis and supernumerary teeth. Tooth development is regulated by numerous developmental signals, such as the well-known Wnt, BMP, FGF, Shh and Eda pathways, which mediate the ongoing complex interactions between epithelium and mesenchyme. Abnormal expression of these crutial signalling during this process may eventually lead to the development of anomalies in tooth number; however, the underlying mechanisms remain elusive. In this review, we summarized the major process of tooth development, the latest progress of mechanism studies and newly reported clinical investigations of tooth number abnormality. In addition, potential treatment approaches for tooth number abnormality based on developmental biology are also discussed. This review not only provides a reference for the diagnosis and treatment of tooth number abnormality in clinical practice but also facilitates the translation of basic research to the clinical application.
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Affiliation(s)
- Han Zhang
- grid.24516.340000000123704535Department of Implantology, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Xuyan Gong
- grid.24516.340000000123704535Department of Implantology, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Xiaoqiao Xu
- grid.24516.340000000123704535Department of Implantology, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Xiaogang Wang
- grid.64939.310000 0000 9999 1211Key Laboratory of Big Data-Based Precision Medicine, School of Engineering Medicine, Beihang University, Beijing, China
| | - Yao Sun
- Department of Implantology, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China.
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Lee ES, Aryal YP, Kim TY, Pokharel E, Kim JY, Yamamoto H, An CH, An SY, Jung JK, Lee Y, Ha JH, Sohn WJ, Kim JY. The effects of 4-Phenylbutyric acid on ER stress during mouse tooth development. Front Physiol 2023; 13:1079355. [PMID: 36685173 PMCID: PMC9848431 DOI: 10.3389/fphys.2022.1079355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 12/12/2022] [Indexed: 01/05/2023] Open
Abstract
Introduction: During tooth development, proper protein folding and trafficking are significant processes as newly synthesized proteins proceed to form designated tissues. Endoplasmic reticulum (ER) stress occurs inevitably in tooth development as unfolded and misfolded proteins accumulate in ER. 4-Phenylbutyric acid (4PBA) is a FDA approved drug and known as a chemical chaperone which alleviates the ER stress. Recently, several studies showed that 4PBA performs therapeutic effects in some genetic diseases due to misfolding of proteins, metabolic related-diseases and apoptosis due to ER stress. However, the roles of 4PBA during odontogenesis are not elucidated. This study revealed the effects of 4PBA during molar development in mice. Methods: We employed in vitro organ cultivation and renal transplantation methods which would mimic the permanent tooth development in an infant period of human. The in vitro cultivated tooth germs and renal calcified teeth were examined by histology and immunohistochemical analysis. Results and Discussion: Our results revealed that treatment of 4PBA altered expression patterns of enamel knot related signaling molecules, and consequently affected cellular secretion and patterned formation of dental hard tissues including dentin and enamel during tooth morphogenesis. The alteration of ER stress by 4PBA treatment during organogenesis would suggest that proper ER stress is important for pattern formation during tooth development and morphogenesis, and 4PBA as a chemical chaperone would be one of the candidate molecules for dental and hard tissue regeneration.
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Affiliation(s)
| | | | | | | | - Ji-Youn Kim
- Department of Dental Hygiene, Gachon University, Incheon, Korea
| | - Hitoshi Yamamoto
- Department of Histology and Developmental Biology, Tokyo Dental College, Tokyo, Japan
| | - Chang-Hyeon An
- Department of Oral and Maxillofacial Radiology, Daegu, South Korea
| | - Seo-Young An
- Department of Oral and Maxillofacial Radiology, Daegu, South Korea
| | | | | | - Jung-Hong Ha
- Department of Conservative Dentistry, School of Dentistry, IHBR, Kyungpook National University, Daegu, Korea
| | - Wern-Joo Sohn
- Department of K-Beauty Business, College of Cosmetics and Pharmaceuticals, Daegu Haany University, Gyeongsan, Korea
| | - Jae-Young Kim
- Department of Biochemistry, Daegu, South Korea,*Correspondence: Jae-Young Kim,
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Sun Q, Zhao T, Li B, Li M, Luo P, Zhang C, Chen G, Cao Z, Li Y, Du M, He H. FTO/RUNX2 signaling axis promotes cementoblast differentiation under normal and inflammatory condition. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2022; 1869:119358. [PMID: 36084732 DOI: 10.1016/j.bbamcr.2022.119358] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 08/30/2022] [Accepted: 09/03/2022] [Indexed: 06/15/2023]
Abstract
N6-methyladenosine (m6A) is the most prevalent mRNA modification which plays crucial roles in various biological processes, but its role in cementogenesis remains largely unknown. Here, using time-series transcriptomic analysis, we reveal that mRNA m6A demethylase Fat mass and obesity-associated protein (FTO) is involved in cementogenesis. Knocking down FTO decreases cementoblast differentiation and mineralization in both OCCM-30 cellular model and murine ectopic bone formation model. Mechanistically, we find that FTO directly binds Runt-related transcription factor 2 (Runx2) mRNA, an important cementogenesis factor, thus protecting it from YTH domain-containing family protein 2 (YTHDF2) mediated degradation, when cementoblasts are differentiating. Knocking down YTHDF2 restores the expression of Runx2 in FTO-knockdown cells. Moreover, under inflammatory conditions, TNF-α inhibits cementoblast differentiation and mineralization partly through FTO/RUNX2 axis. Collectively, our study reveals an important regulatory role of FTO/RUNX2 axis in normal and pathological cementogenesis.
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Affiliation(s)
- Qiao Sun
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei- MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Tingting Zhao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei- MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Biao Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei- MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Mengying Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei- MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Ping Luo
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei- MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Chen Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei- MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China; Department of Orthodontics, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Gang Chen
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei- MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China; Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Zhengguo Cao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei- MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China; Department of Periodontology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Yicun Li
- Department of Oral and Maxillofacial Surgery, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Guangdong province, China
| | - Mingyuan Du
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei- MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China.
| | - Hong He
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei- MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China; Department of Orthodontics, School and Hospital of Stomatology, Wuhan University, Wuhan, China.
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