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Delgado S, Fernandez-Trujillo MA, Houée G, Silvent J, Liu X, Corre E, Sire JY. Expression of 20 SCPP genes during tooth and bone mineralization in Senegal bichir. Dev Genes Evol 2023; 233:91-106. [PMID: 37410100 DOI: 10.1007/s00427-023-00706-w] [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: 01/12/2023] [Accepted: 06/19/2023] [Indexed: 07/07/2023]
Abstract
The African bichir (Polypterus senegalus) is a living representative of Polypteriformes. P. senegalus possesses teeth composed of dentin covered by an enameloid cap and a layer of collar enamel on the tooth shaft, as in lepisosteids. A thin layer of enamel matrix can also be found covering the cap enameloid after its maturation and during the collar enamel formation. Teleosts fish do not possess enamel; teeth are protected by cap and collar enameloid, and inversely in sarcopterygians, where teeth are only covered by enamel, with the exception of the cap enameloid in teeth of larval urodeles. The presence of enameloid and enamel in the teeth of the same organism is an opportunity to solve the evolutionary history of the presence of enamel/enameloid in basal actinopterygians. In silico analyses of the jaw transcriptome of a juvenile bichir provided twenty SCPP transcripts. They included enamel, dentin, and bone-specific SCPPs known in sarcopterygians and several actinopterygian-specific SCPPs. The expression of these 20 genes was investigated by in situ hybridizations on jaw sections during tooth and dentary bone formation. A spatiotemporal expression patterns were established and compared with previous studies of SCPP gene expression during enamel/enameloid and bone formation. Similarities and differences were highlighted, and several SCPP transcripts were found specifically expressed during tooth or bone formation suggesting either conserved or new functions of these SCPPs.
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Affiliation(s)
- S Delgado
- Sorbonne Université, MNHN, CNRS, EPHE, Institut Systématique Évolution Biodiversité, ISYEB, Equipe Homologies, 75005, Paris, France.
| | - M A Fernandez-Trujillo
- Sorbonne Université, CNRS, Institut de Biologie Paris-Seine, UMR 7138, Equipe Evolution et Développement du Squelette, 75005, Paris, France
| | - G Houée
- Sorbonne Université, Muséum National d'Histoire Naturelle, CNRS, CR2P (Centre de Recherche en Paléontologie - Paris), UMR 7207, Equipe Formes, Structures et Fonctions, 43 rue Buffon, 75005, Paris, France
| | - J Silvent
- Sorbonne Université, CNRS, Institut de Biologie Paris-Seine, UMR 7138, Equipe Evolution et Développement du Squelette, 75005, Paris, France
| | - X Liu
- Sorbonne Université - CNRS, FR2424, Station Biologique de Roscoff, Plateforme ABiMS (Analysis and Bioinformatics for Marine Science), 29680, Roscoff, France
| | - E Corre
- Sorbonne Université - CNRS, FR2424, Station Biologique de Roscoff, Plateforme ABiMS (Analysis and Bioinformatics for Marine Science), 29680, Roscoff, France
| | - J Y Sire
- Sorbonne Université, CNRS, Institut de Biologie Paris-Seine, UMR 7138, Equipe Evolution et Développement du Squelette, 75005, Paris, France
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Kawasaki K, Sasagawa I, Mikami M, Nakatomi M, Ishiyama M. Ganoin and acrodin formation on scales and teeth in spotted gar: A vital role of enamelin in the unique process of enamel mineralization. JOURNAL OF EXPERIMENTAL ZOOLOGY. PART B, MOLECULAR AND DEVELOPMENTAL EVOLUTION 2023; 340:455-468. [PMID: 36464775 PMCID: PMC10239528 DOI: 10.1002/jez.b.23183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 11/12/2022] [Accepted: 11/15/2022] [Indexed: 12/12/2022]
Abstract
Gars and bichirs develop scales and teeth with ancient actinopterygian characteristics. Their scale surface and tooth collar are covered with enamel, also known as ganoin, whereas the tooth cap is equipped with an enamel-like tissue, acrodin. Here, we investigated the formation and mineralization of the ganoin and acrodin matrices in spotted gar, and the evolution of the scpp5, ameloblastin (ambn), and enamelin (enam) genes, which encode matrix proteins of ganoin. Results suggest that, in bichirs and gars, all these genes retain structural characteristics of their orthologs in stem actinopterygians, presumably reflecting the presence of ganoin on scales and teeth. During scale formation, Scpp5 and Enam were initially found in the incipient ganoin matrix and the underlying collagen matrix, whereas Ambn was detected mostly in a surface region of the well-developed ganoin matrix. Although collagen is the principal acrodin matrix protein, Scpp5 was detected within the matrix. Similarities in timings of mineralization and the secretion of Scpp5 suggest that acrodin evolved by the loss of the matrix secretory stage of ganoin formation: dentin formation is immediately followed by the maturation stage. The late onset of Ambn secretion during ganoin formation implies that Ambn is not essential for mineral ribbon formation, the hallmark of the enamel matrix. Furthermore, Scpp5 resembles amelogenin that is not important for the initial formation of mineral ribbons in mammals. It is thus likely that the evolution of ENAM was vital to the origin of the unique mineralization process of the enamel matrix.
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Affiliation(s)
- Kazuhiko Kawasaki
- Department of Anthropology, Pennsylvania State University, University Park, Pennsylvania, USA
| | - Ichiro Sasagawa
- Advanced Research Center, School of Life Dentistry at Niigata the Nippon Dental University, Niigata, Japan
| | - Masato Mikami
- Department of Microbiology, School of Life Dentistry at Niigata the Nippon Dental University, Niigata, Japan
| | - Mitsushiro Nakatomi
- Department of Human, Information and Life Sciences, School of Health Sciences, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Mikio Ishiyama
- Department of Histology, School of Life Dentistry at Niigata the Nippon Dental University, Niigata, Japan
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Sasagawa I, Ishiyama M, Yokosuka H, Mikami M, Oka S, Shimokawa H, Uchida T. Immunolocalization of enamel matrix protein-like proteins in the tooth enameloid of spotted gar, Lepisosteus oculatus, an actinopterygian bony fish. Connect Tissue Res 2019; 60:291-303. [PMID: 30063414 DOI: 10.1080/03008207.2018.1506446] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Enameloid is a well-mineralized tissue covering the tooth surface in fish and it corresponds to the outer-most layer of dentin. It was reported that both dental epithelial cells and odontoblasts are involved in the formation of enameloid. Nevertheless, the localization and timing of secretion of ectodermal enamel matrix proteins in enameloid are unclear. In the present study, the enameloid matrix during the stages of enameloid formation in spotted gar, Lepisosteus oculatus, an actinopterygian, was examined mainly by transmission electron microscopy-based immunohistochemistry using an anti-mammalian amelogenin antibody and antiserum. Positive immunoreactivity with the antibody and antiserum was found in enameloid from the surface to the dentin-enameloid junction just before the formation of crystallites. This immunoreactivity disappeared rapidly before the full appearance of crystallites in the enameloid during the stage of mineralization. Immunolabelling was usually found along the collagen fibrils but was not seen on the electron-dense fibrous structures, which were probably derived from matrix vesicles in the previous stage. In inner dental epithelial cells, the granules in the distal cytoplasm often showed positive immunoreactivity, suggesting that the enamel matrix protein-like proteins originated from inner dental epithelial cells. Enamel matrix protein-like proteins in the enameloid matrix might be common to the enamel matrix protein-like proteins previously reported in the collar enamel of teeth and ganoine of ganoid scales, because they exhibited marked immunoreactivity with the same anti-mammalian amelogenin antibodies. It is likely that enamel matrix protein-like proteins are involved in the formation of crystallites along collagen fibrils in enameloid.
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Affiliation(s)
- Ichiro Sasagawa
- a Advanced Research Center, The Nippon Dental University , Niigata Japan
| | - Mikio Ishiyama
- b Department of Histology , The Nippon Dental University , Niigata Japan
| | - Hiroyuki Yokosuka
- b Department of Histology , The Nippon Dental University , Niigata Japan
| | - Masato Mikami
- c Department of Microbiology , The Nippon Dental University , Niigata , Japan
| | - Shunya Oka
- d Department of Biology , School of Life Dentistry at Niigata, The Nippon Dental University , Niigata Japan
| | - Hitoyata Shimokawa
- e Pediatric Dentistry, Department of Oral Health Sciences , Graduate School, Tokyo Medical and Dental University , Tokyo Japan
| | - Takashi Uchida
- f Department of Oral Biology , Graduate School of Biomedical Sciences, Hiroshima University , Hiroshima Japan
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Germain D, Meunier FJ. Teeth of extant Polypteridae and Amiidae have plicidentine organization. ACTA ZOOL-STOCKHOLM 2017. [DOI: 10.1111/azo.12237] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Damien Germain
- UMR 7207 (CR2P, MNHN-CNRS-UPMC); Département Origines et Évolution; Muséum national d'Histoire naturelle; Paris France
| | - François J. Meunier
- UMR 7208 (BOREA, CNRS-MNHN-IRD-UPMC); Département Adaptations du Vivant; Muséum national d'Histoire naturelle; Paris France
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Sasagawa I, Oka S, Mikami M, Yokosuka H, Ishiyama M, Imai A, Shimokawa H, Uchida T. Immunohistochemical and Western Blotting Analyses of Ganoine in the Ganoid Scales ofLepisosteus oculatus: an Actinopterygian Fish. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2016; 326:193-209. [DOI: 10.1002/jez.b.22676] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 04/11/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Ichiro Sasagawa
- Advanced Research Center; School of Life Dentistry at Niigata; The Nippon Dental University; Niigata Japan
| | - Shunya Oka
- Department of Biology; School of Life Dentistry at Niigata; The Nippon Dental University; Niigata Japan
| | - Masato Mikami
- Department of Microbiology; School of Life Dentistry at Niigata; The Nippon Dental University; Niigata Japan
| | - Hiroyuki Yokosuka
- Department of Histology; School of Life Dentistry at Niigata; The Nippon Dental University; Niigata Japan
| | - Mikio Ishiyama
- Department of Histology; School of Life Dentistry at Niigata; The Nippon Dental University; Niigata Japan
| | - Akane Imai
- Department of Biochemistry, School of Life Dentistry at Niigata; The Nippon Dental University; Niigata Japan
- Department of Dental Hygiene, College at Niigata; The Nippon Dental University; Niigata Japan
| | - Hitoyata Shimokawa
- Division of Pediatric Dentistry, Department of Oral Health Sciences, Graduate School; Tokyo Medical and Dental University; Bunkyo-ku, Tokyo Japan
| | - Takashi Uchida
- Department of Oral Biology, Graduate School of Biomedical Sciences; Hiroshima University; Hiroshima Japan
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Hirayama Y, Watanabe T, Yokoyama M, Fujiseki M, Yamazaki T, Sohn WJ, Kim JY, Yamamoto H. Histological Observation of the Jaws and Teeth of the Green Spotted Pufferfish (Tetraodon Nigroviridis). J HARD TISSUE BIOL 2015. [DOI: 10.2485/jhtb.24.325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Yuzo Hirayama
- Department of Histology and Developmental Biology, Tokyo Dental College
| | - Tae Watanabe
- Department of Histology and Developmental Biology, Tokyo Dental College
| | - Megumi Yokoyama
- Department of Physiology, Nihon University School of Dentistry at Matsudo
| | - Motoya Fujiseki
- Department of Histology and Developmental Biology, Tokyo Dental College
| | - Takaki Yamazaki
- Department of Histology and Developmental Biology, Tokyo Dental College
| | - Wern-Joo Sohn
- School of Life Science and Biotechnology, Kyungpook National University
| | - Jae-Young Kim
- Department of Biochemistry, School of Dentistry, Kyungpook National University
| | - Hitoshi Yamamoto
- Department of Histology and Developmental Biology, Tokyo Dental College
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Sasagawa I, Ishiyama M, Yokosuka H, Mikami M, Shimokawa H, Uchida T. Immunohistochemical and Western blot analyses of collar enamel in the jaw teeth of gars, Lepisosteus oculatus, an actinopterygian fish. Connect Tissue Res 2014; 55:225-33. [PMID: 24611716 DOI: 10.3109/03008207.2014.902450] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Although most fish have no enamel layer in their teeth, those belonging to Lepisosteus (gars), an extant actinopterygian fish genus, do and so can be used to study amelogenesis. In order to examine the collar enamel matrix in gar teeth, we subjected gar teeth to light and electron microscopic immunohistochemical examinations using an antibody against bovine amelogenin (27 kDa) and antiserum against porcine amelogenin (25 kDa), as well as region-specific antibodies and antiserum against the C-terminus and middle region, and N-terminus of porcine amelogenin, respectively. The enamel matrix exhibited intense immunoreactivity to the anti-bovine amelogenin antibody and the anti-porcine amelogenin antiserum in addition to the C-terminal and middle region-specific antibodies, but not to the N-terminal-specific antiserum. These results suggest that the collar enamel matrix of gar teeth contains amelogenin-like proteins and that these proteins possess domains that closely resemble the C-terminal and middle regions of porcine amelogenin. Western blot analyses of the tooth germs of Lepisosteus were also performed. As a result, protein bands with molecular weights of 78 kDa and 65 kDa were clearly stained by the anti-bovine amelogenin antibody as well as the antiserum against porcine amelogenin and the middle-region-specific antibody. It is likely that the amelogenin-like proteins present in Lepisosteus do not correspond to the amelogenins found in mammals, although they do possess domains that are shared with mammalian amelogenins.
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Assaraf-Weill N, Gasse B, Silvent J, Bardet C, Sire JY, Davit-Béal T. Ameloblasts express type I collagen during amelogenesis. J Dent Res 2014; 93:502-7. [PMID: 24570147 DOI: 10.1177/0022034514526236] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Enamel and enameloid, the highly mineralized tooth-covering tissues in living vertebrates, are different in their matrix composition. Enamel, a unique product of ameloblasts, principally contains enamel matrix proteins (EMPs), while enameloid possesses collagen fibrils and probably receives contributions from both odontoblasts and ameloblasts. Here we focused on type I collagen (COL1A1) and amelogenin (AMEL) gene expression during enameloid and enamel formation throughout ontogeny in the caudate amphibian, Pleurodeles waltl. In this model, pre-metamorphic teeth possess enameloid and enamel, while post-metamorphic teeth possess enamel only. In first-generation teeth, qPCR and in situ hybridization (ISH) on sections revealed that ameloblasts weakly expressed AMEL during late-stage enameloid formation, while expression strongly increased during enamel deposition. Using ISH, we identified COL1A1 transcripts in ameloblasts and odontoblasts during enameloid formation. COL1A1 expression in ameloblasts gradually decreased and was no longer detected after metamorphosis. The transition from enameloid-rich to enamel-rich teeth could be related to a switch in ameloblast activity from COL1A1 to AMEL synthesis. P. waltl therefore appears to be an appropriate animal model for the study of the processes involved during enameloid-to-enamel transition, especially because similar events probably occurred in various lineages during vertebrate evolution.
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Affiliation(s)
- N Assaraf-Weill
- UMR 7138-SAE, Research Group "Evolution & Development of the Skeleton", Université Pierre et Marie Curie, 7 quai St-Bernard, Case 5, 75005 Paris, France
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Oral biosciences: The annual review 2013. J Oral Biosci 2014. [DOI: 10.1016/j.job.2014.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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10
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Teeth and ganoid scales in Polypterus and Lepisosteus, the basic actinopterygian fish: An approach to understand the origin of the tooth enamel. J Oral Biosci 2013. [DOI: 10.1016/j.job.2013.04.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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