1
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Andrique C, Bonnet AL, Dang J, Lesieur J, Krautzberger AM, Baroukh B, Torrens C, Sadoine J, Schmitt A, Rochefort GY, Bardet C, Six I, Houillier P, Tharaux PL, Schrewe H, Gaucher C, Chaussain C. Vasorin as an actor of bone turnover? J Cell Physiol 2024. [PMID: 38504496 DOI: 10.1002/jcp.31257] [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: 10/02/2023] [Revised: 03/04/2024] [Accepted: 03/07/2024] [Indexed: 03/21/2024]
Abstract
Bone diseases are increasing with aging populations and it is important to identify clues to develop innovative treatments. Vasn, which encodes vasorin (Vasn), a transmembrane protein involved in the pathophysiology of several organs, is expressed during the development in intramembranous and endochondral ossification zones. Here, we studied the impact of Vasn deletion on the osteoblast and osteoclast dialog through a cell Coculture model. In addition, we explored the bone phenotype of Vasn KO mice, either constitutive or tamoxifen-inducible, or with an osteoclast-specific deletion. First, we show that both osteoblasts and osteoclasts express Vasn. Second, we report that, in both KO mouse models but not in osteoclast-targeted KO mice, Vasn deficiency was associated with an osteopenic bone phenotype, due to an imbalance in favor of osteoclastic resorption. Finally, through the Coculture experiments, we identify a dysregulation of the Wnt/β-catenin pathway together with an increase in RANKL release by osteoblasts, which led to an enhanced osteoclast activity. This study unravels a direct role of Vasn in bone turnover, introducing a new biomarker or potential therapeutic target for bone pathologies.
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Affiliation(s)
| | - Anne Laure Bonnet
- Université Paris Cité, Montrouge, France
- AP-HP, Services de médecine bucco-dentaire: GH Nord - Université Paris Cité, GH Sorbonne Université, GH Henri Mondor, Paris, France
| | - Julien Dang
- Paris Cardiovascular Research Centre - PARCC, Université Paris Cité, Inserm, Paris, France
| | | | - A Michaela Krautzberger
- Department of Developmental Genetics, Max Planck Institute for Molecular Genetics, Berlin, Germany
| | | | | | | | - Alain Schmitt
- Université Paris Cité, Institut Cochin, INSERM U1016, CNRS UMR8104, Paris, France
| | | | | | - Isabelle Six
- URP 7517 UPJV, Pathophysiological Mechanisms and Consequences of Cardiovascular Calcifications (MP3CV), Jules Verne University of Picardie, Amiens, France
| | - Pascal Houillier
- Centre de Recherche des Cordeliers, INSERM U1138, Sorbonne Université, Université Paris Cité, Paris, France
- AP-HP, Explorations fonctionnelles rénales, Physiologie, Hôpital européen Georges-Pompidou, Paris, France
| | - Pierre Louis Tharaux
- Paris Cardiovascular Research Centre - PARCC, Université Paris Cité, Inserm, Paris, France
| | - Heinrich Schrewe
- Department of Developmental Genetics, Max Planck Institute for Molecular Genetics, Berlin, Germany
| | - Celine Gaucher
- Université Paris Cité, Montrouge, France
- AP-HP, Services de médecine bucco-dentaire: GH Nord - Université Paris Cité, GH Sorbonne Université, GH Henri Mondor, Paris, France
| | - Catherine Chaussain
- Université Paris Cité, Montrouge, France
- AP-HP, Services de médecine bucco-dentaire: GH Nord - Université Paris Cité, GH Sorbonne Université, GH Henri Mondor, Paris, France
- APHP, Centre de reference des maladies rares du phosphate et du calcium (filière OSCAR, ERN BOND), Hôpital Bretonneau, Paris, France
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2
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Hilliquin S, Zhukouskaya V, Fogel O, Cherifi C, Ibrahim K, Slimani L, Cornelis FMF, Storms L, Hens A, Briot K, Lories R, Chaussain C, Miceli-Richard C, Bardet C. The sacroiliac joint: An original and highly sensitive tool to highlight altered bone phenotype in murine models of skeletal disorders. Bone 2024; 178:116931. [PMID: 37839664 DOI: 10.1016/j.bone.2023.116931] [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: 05/11/2023] [Revised: 09/28/2023] [Accepted: 10/09/2023] [Indexed: 10/17/2023]
Abstract
Bone disorders may affect the skeleton in different ways, some bones being very impaired and others less severely. In translational studies using murine models of human skeletal diseases, the bone phenotype is mainly evaluated at the distal femur or proximal tibia. The sacroiliac joint (SIJ), which connects the spine to the pelvis, is involved in the balanced transfer of mechanical energy from the lumbar spine to the lower extremities. Because of its role in biomechanical stress, the SIJ is a region of particular interest in various bone diseases. Here we aimed to characterize the SIJ in several murine models to develop a highly reliable tool for studying skeletal disorders. We performed a 12-month in vivo micro-computed tomography (micro-CT) follow-up to characterize the SIJ in wild-type (WT) C57BL/J6 mice and compared the bone microarchitecture of the SIJ and the distal femur at 3 months by micro-CT and histology. To test the sensitivity of our methodology, the SIJ and distal femur were evaluated at 3 and 6 months, in 2 murine models of skeletal disorder, X-linked hypophosphatemia (Hyp mice) and HLA-B27 transgenic mice and compared to WT mice. A multimodal analysis was performed, using a combination of microCT and histological analysis. With the Hyp model, the SIJ displayed more bone microarchitecture alterations than the distal femur. Hyp mice showed a significant reduction in trabecular bone at both the distal femur and sacral slope as compared with WT mice, with a significant positive correlation between trabecular bone parameters of the distal femur and sacral side of the SIJ. Furthermore, trabecular bone parameters (Bone Volume/Total Volume (BV/TV), trabecular thickness (Tb.Th), trabecular separation (Tb.Sp), trabecular number (Tb.N), trabecular pattern factor (Tb.Pf)) were significantly increased compared to femoral parameters at the SIJ. The sacral articular cortical bone, which is indicative of osteoarticular lesions, was altered in Hyp mice. Interestingly, in accordance to previous studies, HLA-B27 transgenic mice did not show any osteoarticular lesions as compared with WT mice. Cortical bone parameters (thickness, porosity), as well as scoring performed with double blinding, did not show difference between the 2 genotypes. The characterization and evaluation of the SIJ surface appears very sensitive to emphasize alterations of bone and joint. The SIJ may represent a valuable tool to investigate both bone and local osteoarticular alterations in murine models of skeletal disorders and might be a relevant site for assessing the response to treatment of chronic bone diseases.
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Affiliation(s)
- Stéphane Hilliquin
- Université Paris Cité, Institut des maladies musculo-squelettiques, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d'Imagerie du Vivant (PIV), Montrouge, France; Department of Rheumatology, Cochin Hospital, Université Paris Cité, Paris, France
| | - Volha Zhukouskaya
- Université Paris Cité, Institut des maladies musculo-squelettiques, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d'Imagerie du Vivant (PIV), Montrouge, France; Centre de référence des maladies rares du métabolisme du calcium et du phosphate, Plateforme d'expertise maladies rares Paris Saclay, filière OSCAR, EndoRare and BOND ERN, Hôpital de Bicêtre, Le Kremlin-Bicêtre, France
| | - Olivier Fogel
- Department of Rheumatology, Cochin Hospital, Université Paris Cité, Paris, France
| | - Chahrazad Cherifi
- Laboratoire Gly-CREET, Université Paris-Est Créteil Val de Marne (UPEC) Faculté des sciences et technologies, France
| | - Karim Ibrahim
- Université Paris Cité, Institut des maladies musculo-squelettiques, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d'Imagerie du Vivant (PIV), Montrouge, France
| | - Lotfi Slimani
- Université Paris Cité, Institut des maladies musculo-squelettiques, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d'Imagerie du Vivant (PIV), Montrouge, France
| | - Frederique M F Cornelis
- Laboratory of Tissue Homeostasis and Disease, Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, Leuven, Belgium
| | - Lies Storms
- Laboratory of Tissue Homeostasis and Disease, Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, Leuven, Belgium
| | - Ann Hens
- Laboratory of Tissue Homeostasis and Disease, Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, Leuven, Belgium
| | - Karine Briot
- Department of Rheumatology, Cochin Hospital, Université Paris Cité, Paris, France; Centre de référence des maladies rares du métabolisme du calcium et du phosphate, Plateforme d'expertise maladies rares Paris Saclay, filière OSCAR, EndoRare and BOND ERN, Hôpital de Bicêtre, Le Kremlin-Bicêtre, France
| | - Rik Lories
- Laboratory of Tissue Homeostasis and Disease, Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, Leuven, Belgium; Division of Rhumatology, University Hospitals Leuven, Leuven, Belgium
| | - Catherine Chaussain
- Université Paris Cité, Institut des maladies musculo-squelettiques, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d'Imagerie du Vivant (PIV), Montrouge, France; Centre de référence des maladies rares du métabolisme du calcium et du phosphate, Plateforme d'expertise maladies rares Paris Saclay, filière OSCAR, EndoRare and BOND ERN, Hôpital de Bicêtre, Le Kremlin-Bicêtre, France; AP-HP Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Dental Medicine Department, Bretonneau Hospital, GHN, 75018 Paris, France
| | | | - Claire Bardet
- Université Paris Cité, Institut des maladies musculo-squelettiques, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d'Imagerie du Vivant (PIV), Montrouge, France.
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3
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Lira Dos Santos EJ, Nakajima K, Po J, Hanai A, Zhukouskaya V, Biosse Duplan M, Linglart A, Shimada T, Chaussain C, Bardet C. Dental impact of anti-fibroblast growth factor 23 therapy in X-linked hypophosphatemia. Int J Oral Sci 2023; 15:53. [PMID: 38052774 DOI: 10.1038/s41368-023-00259-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 11/03/2023] [Accepted: 11/05/2023] [Indexed: 12/07/2023] Open
Abstract
Elevated fibroblast growth factor 23 (FGF23) in X-linked hypophosphatemia (XLH) results in rickets and phosphate wasting, manifesting by severe bone and dental abnormalities. Burosumab, a FGF23-neutralizing antibody, an alternative to conventional treatment (phosphorus and active vitamin D analogs), showed significant improvement in the long bone phenotype. Here, we examined whether FGF23 antibody (FGF23-mAb) also improved the dentoalveolar features associated with XLH. Four-week-old male Hyp mice were injected weekly with 4 or 16 mg·kg-1 of FGF23-mAb for 2 months and compared to wild-type (WT) and vehicle (PBS) treated Hyp mice (n = 3-7 mice). Micro-CT analyses showed that both doses of FGF23-mAb restored dentin/cementum volume and corrected the enlarged pulp volume in Hyp mice, the higher concentration resulting in a rescue similar to WT levels. FGF23-mAb treatment also improved alveolar bone volume fraction and mineral density compared to vehicle-treated ones. Histology revealed improved mineralization of the dentoalveolar tissues, with a decreased amount of osteoid, predentin and cementoid. Better periodontal ligament attachment was also observed, evidenced by restoration of the acellular cementum. These preclinical data were consistent with the retrospective analysis of two patients with XLH showing that burosumab treatment improved oral features. Taken together, our data show that the dentoalveolar tissues are greatly improved by FGF23-mAb treatment, heralding its benefit in clinics for dental abnormalities.
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Affiliation(s)
- Elis J Lira Dos Santos
- Université Paris Cité, Institut des maladies musculo-squelettiques, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d'Imagerie du Vivant (PIV), Montrouge, France
| | - Kenta Nakajima
- R&D Division, Kyowa Kirin, Co., Ltd, 3-6-6 Asahi-machi, Machida-shi, Tokyo, Japan
| | - Julien Po
- Université Paris Cité, Institut des maladies musculo-squelettiques, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d'Imagerie du Vivant (PIV), Montrouge, France
| | - Ayako Hanai
- R&D Division, Kyowa Kirin, Co., Ltd, 3-6-6 Asahi-machi, Machida-shi, Tokyo, Japan
| | - Volha Zhukouskaya
- Université Paris Cité, Institut des maladies musculo-squelettiques, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d'Imagerie du Vivant (PIV), Montrouge, France
| | - Martin Biosse Duplan
- Université Paris Cité, Institut Imagine, INSERM UMR 1163, Paris, France
- AP-HP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Dental Medicine Department, Bretonneau Hospital, GHN-Université Paris Cité, Paris, France
| | - Agnès Linglart
- Paris-Saclay University, AP-HP, INSERM U1185, DMU SEA, Endocrinology and Diabetes for Children, Reference Center for Rare Diseases of the Calcium and Phosphate Metabolism, OSCAR filière, EndoRare, and BOND ERNs, Bicêtre Paris Saclay Hospital, Le Kremlin-Bicêtre, France
| | - Takashi Shimada
- Medical Affairs Department, Kyowa Kirin, Co., Ltd, 1-9-2 Otemachi, Chiyoda-ku, Tokyo, Japan
| | - Catherine Chaussain
- Université Paris Cité, Institut des maladies musculo-squelettiques, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d'Imagerie du Vivant (PIV), Montrouge, France
- AP-HP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Dental Medicine Department, Bretonneau Hospital, GHN-Université Paris Cité, Paris, France
| | - Claire Bardet
- Université Paris Cité, Institut des maladies musculo-squelettiques, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d'Imagerie du Vivant (PIV), Montrouge, France.
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4
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André J, Zhukouskaya VV, Lambert AS, Salles JP, Mignot B, Bardet C, Chaussain C, Rothenbuhler A, Linglart A. Growth hormone treatment improves final height in children with X-linked hypophosphatemia. Orphanet J Rare Dis 2022; 17:444. [PMID: 36544157 PMCID: PMC9768884 DOI: 10.1186/s13023-022-02590-5] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 12/07/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND/AIM Despite optimal conventional treatment (oral phosphate supplements and active vitamin D analogs), about 40-50% of children with well-controlled X-linked hypophosphatemia (XLH) show linear growth failure, making them less likely to achieve an acceptable final height. Here, we studied the hypothesis that rhGH treatment improves final height in children with XLH and growth failure. METHODS Two cohorts of children with XLH were included in this retrospective longitudinal analysis: (1) a cohort treated with rhGH for short stature (n = 34) and (2) a cohort not treated with rhGH (n = 29). The mean duration of rhGH treatment was 4.4 ± 2.9 years. We collected the auxological parameters at various time points during follow-up until final height. RESULTS In rhGH-treated children, 2 years of rhGH therapy was associated with a significant increase in height from - 2.4 ± 0.9 to - 1.5 ± 0.7 SDS (p < 0.001). Their mean height at rhGH discontinuation was - 1.2 ± 0.9 SDS and at final height was - 1.3 ± 0.9 SDS corresponding to 165.5 ± 6.4 cm in boys and 155.5 ± 6.3 cm in girls. Notably, the two groups had similar final heights; i.e., the final height in children not treated with rhGH being - 1.2 ± 1.1 SDS (165.4 ± 6.8 cm in boys and 153.7 ± 7.8 cm in girls), p = 0.7. CONCLUSION Treatment with rhGH permits to improve final height in children with XLH and growth failure, despite optimal conventional treatment. We propose therefore that rhGH therapy could be considered as an option for short stature in the context of XLH.
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Affiliation(s)
- Julia André
- grid.413784.d0000 0001 2181 7253AP-HP, Endocrinology and Diabetes for Children, Reference Center for Rare Diseases of Calcium and Phosphate Metabolism, DMU SEA, OSCAR Filière, EndoRare and BOND ERN, Bicêtre Paris Saclay Hospital, 78 Rue du Général Leclerc, 94270 Le Kremlin Bicêtre, France
| | - Volha V. Zhukouskaya
- grid.413784.d0000 0001 2181 7253AP-HP, Endocrinology and Diabetes for Children, Reference Center for Rare Diseases of Calcium and Phosphate Metabolism, DMU SEA, OSCAR Filière, EndoRare and BOND ERN, Bicêtre Paris Saclay Hospital, 78 Rue du Général Leclerc, 94270 Le Kremlin Bicêtre, France ,grid.508487.60000 0004 7885 7602Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), Université Paris Cité, Montrouge, France
| | - Anne-Sophie Lambert
- grid.413784.d0000 0001 2181 7253AP-HP, Endocrinology and Diabetes for Children, Reference Center for Rare Diseases of Calcium and Phosphate Metabolism, DMU SEA, OSCAR Filière, EndoRare and BOND ERN, Bicêtre Paris Saclay Hospital, 78 Rue du Général Leclerc, 94270 Le Kremlin Bicêtre, France ,grid.413784.d0000 0001 2181 7253AP-HP, Medicine for Adolescents, Bicêtre Paris Saclay Hospital, Le Kremlin Bicêtre, France
| | - Jean-Pierre Salles
- grid.508721.9Unit of Endocrinology and Bone Diseases, Children Hospital, Toulouse University Hospital, CHU de Toulouse, Université de Toulouse, ERN BOND, INSERM UMR 1291/CNRS 5051, INFINITY Center, Toulouse, France
| | - Brigitte Mignot
- grid.411158.80000 0004 0638 9213Department of Pediatrics, CHU of Besancon, Besançon, France
| | - Claire Bardet
- grid.508487.60000 0004 7885 7602Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), Université Paris Cité, Montrouge, France
| | - Catherine Chaussain
- grid.413784.d0000 0001 2181 7253AP-HP, Endocrinology and Diabetes for Children, Reference Center for Rare Diseases of Calcium and Phosphate Metabolism, DMU SEA, OSCAR Filière, EndoRare and BOND ERN, Bicêtre Paris Saclay Hospital, 78 Rue du Général Leclerc, 94270 Le Kremlin Bicêtre, France ,grid.508487.60000 0004 7885 7602Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), Université Paris Cité, Montrouge, France ,grid.50550.350000 0001 2175 4109AP-HP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Dental Medicine Department, Bretonneau Hospital, GHN-Universite de Paris, Paris, France
| | - Anya Rothenbuhler
- grid.413784.d0000 0001 2181 7253AP-HP, Endocrinology and Diabetes for Children, Reference Center for Rare Diseases of Calcium and Phosphate Metabolism, DMU SEA, OSCAR Filière, EndoRare and BOND ERN, Bicêtre Paris Saclay Hospital, 78 Rue du Général Leclerc, 94270 Le Kremlin Bicêtre, France
| | - Agnès Linglart
- grid.413784.d0000 0001 2181 7253AP-HP, Endocrinology and Diabetes for Children, Reference Center for Rare Diseases of Calcium and Phosphate Metabolism, DMU SEA, OSCAR Filière, EndoRare and BOND ERN, Bicêtre Paris Saclay Hospital, 78 Rue du Général Leclerc, 94270 Le Kremlin Bicêtre, France ,grid.460789.40000 0004 4910 6535INSERM, Physiologie Et Physiopathologie Endocrinienne, Bicêtre Paris Saclay Hospital, Paris Saclay University, Le Kremlin Bicêtre, France
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Obtel N, Le Cabec A, Nguyen TN, Giabicani E, Van Malderen SJM, Garrevoet J, Percot A, Paris C, Dean C, Hadj‐Rabia S, Houillier P, Breiderhoff T, Bardet C, Coradin T, Ramirez Rozzi F, Chaussain C. Impact of claudin-10 deficiency on amelogenesis: Lesson from a HELIX tooth. Ann N Y Acad Sci 2022; 1516:197-211. [PMID: 35902997 PMCID: PMC9796262 DOI: 10.1111/nyas.14865] [Citation(s) in RCA: 2] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In epithelia, claudin proteins are important components of the tight junctions as they determine the permeability and specificity to ions of the paracellular pathway. Mutations in CLDN10 cause the rare autosomal recessive HELIX syndrome (Hypohidrosis, Electrolyte imbalance, Lacrimal gland dysfunction, Ichthyosis, and Xerostomia), in which patients display severe enamel wear. Here, we assess whether this enamel wear is caused by an innate fragility directly related to claudin-10 deficiency in addition to xerostomia. A third molar collected from a female HELIX patient was analyzed by a combination of microanatomical and physicochemical approaches (i.e., electron microscopy, elemental mapping, Raman microspectroscopy, and synchrotron-based X-ray fluorescence). The enamel morphology, formation time, organization, and microstructure appeared to be within the natural variability. However, we identified accentuated strontium variations within the HELIX enamel, with alternating enrichments and depletions following the direction of the periodical striae of Retzius. These markings were also present in dentin. These data suggest that the enamel wear associated with HELIX may not be related to a disruption of enamel microstructure but rather to xerostomia. However, the occurrence of events of strontium variations within dental tissues might indicate repeated episodes of worsening of the renal dysfunction that may require further investigations.
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Affiliation(s)
- Nicolas Obtel
- Université Paris Cité, URP2496 Pathologies, Imagerie et Biothérapies Orofaciales et Plateforme Imagerie du Vivant (PIV), FHU‐DDS‐net, IHMOA, Dental SchoolMontrougeFrance,AP‐HP Services de médecine bucco‐dentaire, Hôpitaux Universitaires Bretonneau (CRMR phosphore et calcium, filière OSCAR et ERN Bond) and Charles Foix, FHU DDS‐netIle de FranceFrance
| | - Adeline Le Cabec
- Univ. Bordeaux, CNRS, MCC, PACEA, UMR 5199PessacFrance,Department of Human EvolutionMax Planck Institute for Evolutionary AnthropologyLeipzigGermany
| | - Thè Nghia Nguyen
- Université Paris Cité, URP2496 Pathologies, Imagerie et Biothérapies Orofaciales et Plateforme Imagerie du Vivant (PIV), FHU‐DDS‐net, IHMOA, Dental SchoolMontrougeFrance
| | - Eloise Giabicani
- Université Paris Cité, URP2496 Pathologies, Imagerie et Biothérapies Orofaciales et Plateforme Imagerie du Vivant (PIV), FHU‐DDS‐net, IHMOA, Dental SchoolMontrougeFrance
| | | | | | - Aline Percot
- Sorbonne Université, CNRS, De la Molécule aux Nano‐Objets: Réactivité, Interactions et Spectroscopies (MONARIS)ParisFrance
| | - Céline Paris
- Sorbonne Université, CNRS, De la Molécule aux Nano‐Objets: Réactivité, Interactions et Spectroscopies (MONARIS)ParisFrance
| | - Christopher Dean
- Department of Earth Sciences, Centre for Human Evolution ResearchNatural History MuseumLondonUK,Department of Cell and Developmental BiologyUniversity College LondonLondonUK
| | - Smail Hadj‐Rabia
- Université Paris Cité, INSERM1163 Institut Imagine; APHP, Hôpital Necker‐Enfants Malades, Department of Dermatology, Reference Center for Rare Skin DiseasesParisFrance
| | - Pascal Houillier
- Université Paris Cité, Sorbonne Université, Centre de Recherche des Cordeliers, INSERM, CNRS‐ERL8228ParisFrance,APHP, Service de Physiologie, Centre de Référence des Maladies Rénales Héréditaires de l'Enfant et de l'Adulte (MARHEA), Hôpital Européen Georges PompidouParisFrance
| | - Tilman Breiderhoff
- Charité Universitaetsmedizin Berlin, Division of Gastroenterology, Nephrology and Metabolic Diseases, Department of PediatricsBerlinGermany
| | - Claire Bardet
- Université Paris Cité, URP2496 Pathologies, Imagerie et Biothérapies Orofaciales et Plateforme Imagerie du Vivant (PIV), FHU‐DDS‐net, IHMOA, Dental SchoolMontrougeFrance
| | - Thibaud Coradin
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de ParisParisFrance
| | - Fernando Ramirez Rozzi
- Université Paris Cité, URP2496 Pathologies, Imagerie et Biothérapies Orofaciales et Plateforme Imagerie du Vivant (PIV), FHU‐DDS‐net, IHMOA, Dental SchoolMontrougeFrance,Eco‐anthropologie (EA), Muséum national d'Histoire naturelle, CNRSUniversité de ParisParisFrance
| | - Catherine Chaussain
- Université Paris Cité, URP2496 Pathologies, Imagerie et Biothérapies Orofaciales et Plateforme Imagerie du Vivant (PIV), FHU‐DDS‐net, IHMOA, Dental SchoolMontrougeFrance,AP‐HP Services de médecine bucco‐dentaire, Hôpitaux Universitaires Bretonneau (CRMR phosphore et calcium, filière OSCAR et ERN Bond) and Charles Foix, FHU DDS‐netIle de FranceFrance
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6
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Zhukouskaya VV, Bardet C. Editorial: Calcium: An Overview From Physiology to Pathological Mineralization. Front Endocrinol (Lausanne) 2022; 13:932019. [PMID: 35813661 PMCID: PMC9263913 DOI: 10.3389/fendo.2022.932019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 05/31/2022] [Indexed: 12/03/2022] Open
Affiliation(s)
- Volha V. Zhukouskaya
- Université Paris Cité, Laboratory of Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), Montrouge, France
- Assistance Publique Hôpitaux de Paris (APHP), Department of Diabetology and Clinical Immunology, Hôpital Cochin, Paris, France
- *Correspondence: Volha V. Zhukouskaya,
| | - Claire Bardet
- Université Paris Cité, Laboratory of Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), Montrouge, France
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Zhukouskaya VV, Jauze L, Charles S, Leborgne C, Hilliquin S, Sadoine J, Slimani L, Baroukh B, van Wittenberghe L, Danièle N, Rajas F, Linglart A, Mingozzi F, Chaussain C, Bardet C, Ronzitti G. A novel therapeutic strategy for skeletal disorders: Proof of concept of gene therapy for X-linked hypophosphatemia. Sci Adv 2021; 7:eabj5018. [PMID: 34705504 PMCID: PMC8550245 DOI: 10.1126/sciadv.abj5018] [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] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 09/03/2021] [Indexed: 06/13/2023]
Abstract
Adeno-associated virus (AAV) vectors are a well-established gene transfer approach for rare genetic diseases. Nonetheless, some tissues, such as bone, remain refractory to AAV. X-linked hypophosphatemia (XLH) is a rare skeletal disorder associated with increased levels of fibroblast growth factor 23 (FGF23), resulting in skeletal deformities and short stature. The conventional treatment for XLH, lifelong phosphate and active vitamin D analogs supplementation, partially improves quality of life and is associated with severe long-term side effects. Recently, a monoclonal antibody against FGF23 has been approved for XLH but remains a high-cost lifelong therapy. We developed a liver-targeting AAV vector to inhibit FGF23 signaling. We showed that hepatic expression of the C-terminal tail of FGF23 corrected skeletal manifestations and osteomalacia in a XLH mouse model. Our data provide proof of concept for AAV gene transfer to treat XLH, a prototypical bone disease, further expanding the use of this modality to treat skeletal disorders.
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Affiliation(s)
- Volha V. Zhukouskaya
- Genethon, 91000 Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, INTEGRARE Research Unit UMR_S951, 91000 Evry, France
- Université de Paris, Institut des maladies musculo-squelettiques, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), Montrouge, France
- Paris-Saclay University, INSERM U1185, AP-HP, DMU SEA, Endocrinology and Diabetes for Children, Reference Center for Rare Diseases of the Calcium and Phosphate Metabolism, OSCAR filière, EndoRare, and BOND ERN, Bicêtre Hospital, Le Kremlin-Bicêtre, France
| | - Louisa Jauze
- Genethon, 91000 Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, INTEGRARE Research Unit UMR_S951, 91000 Evry, France
- Institut National de la Santé et de la Recherche Médicale, U1213, Lyon F-69008, France
| | - Séverine Charles
- Genethon, 91000 Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, INTEGRARE Research Unit UMR_S951, 91000 Evry, France
| | - Christian Leborgne
- Genethon, 91000 Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, INTEGRARE Research Unit UMR_S951, 91000 Evry, France
| | - Stéphane Hilliquin
- Université de Paris, Institut des maladies musculo-squelettiques, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), Montrouge, France
- AP-HP, Department of Rheumatology, Cochin Hospital, Université de Paris, Paris, France
| | - Jérémy Sadoine
- Université de Paris, Institut des maladies musculo-squelettiques, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), Montrouge, France
| | - Lotfi Slimani
- Université de Paris, Institut des maladies musculo-squelettiques, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), Montrouge, France
| | - Brigitte Baroukh
- Université de Paris, Institut des maladies musculo-squelettiques, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), Montrouge, France
| | | | | | - Fabienne Rajas
- Institut National de la Santé et de la Recherche Médicale, U1213, Lyon F-69008, France
| | - Agnès Linglart
- Paris-Saclay University, INSERM U1185, AP-HP, DMU SEA, Endocrinology and Diabetes for Children, Reference Center for Rare Diseases of the Calcium and Phosphate Metabolism, OSCAR filière, EndoRare, and BOND ERN, Bicêtre Hospital, Le Kremlin-Bicêtre, France
| | - Federico Mingozzi
- Genethon, 91000 Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, INTEGRARE Research Unit UMR_S951, 91000 Evry, France
| | - Catherine Chaussain
- Université de Paris, Institut des maladies musculo-squelettiques, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), Montrouge, France
- Paris-Saclay University, INSERM U1185, AP-HP, DMU SEA, Endocrinology and Diabetes for Children, Reference Center for Rare Diseases of the Calcium and Phosphate Metabolism, OSCAR filière, EndoRare, and BOND ERN, Bicêtre Hospital, Le Kremlin-Bicêtre, France
- AP-HP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Dental Medicine Department, Bretonneau Hospital, GHN-Université de Paris, Paris 75018, France
| | - Claire Bardet
- Université de Paris, Institut des maladies musculo-squelettiques, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), Montrouge, France
| | - Giuseppe Ronzitti
- Genethon, 91000 Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, INTEGRARE Research Unit UMR_S951, 91000 Evry, France
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Blanc-Sylvestre N, Bouchard P, Chaussain C, Bardet C. Pre-Clinical Models in Implant Dentistry: Past, Present, Future. Biomedicines 2021; 9:1538. [PMID: 34829765 PMCID: PMC8615291 DOI: 10.3390/biomedicines9111538] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 10/11/2021] [Accepted: 10/15/2021] [Indexed: 12/23/2022] Open
Abstract
Biomedical research seeks to generate experimental results for translation to clinical settings. In order to improve the transition from bench to bedside, researchers must draw justifiable conclusions based on data from an appropriate model. Animal testing, as a prerequisite to human clinical exposure, is performed in a range of species, from laboratory mice to larger animals (such as dogs or non-human primates). Minipigs appear to be the animal of choice for studying bone surgery around intraoral dental implants. Dog models, well-known in the field of dental implant research, tend now to be used for studies conducted under compromised oral conditions (biofilm). Regarding small animal models, research studies mostly use rodents, with interest in rabbit models declining. Mouse models remain a reference for genetic studies. On the other hand, over the last decade, scientific advances and government guidelines have led to the replacement, reduction, and refinement of the use of all animal models in dental implant research. In new development strategies, some in vivo experiments are being progressively replaced by in vitro or biomaterial approaches. In this review, we summarize the key information on the animal models currently available for dental implant research and highlight (i) the pros and cons of each type, (ii) new levels of decisional procedures regarding study objectives, and (iii) the outlook for animal research, discussing possible non-animal options.
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Affiliation(s)
- Nicolas Blanc-Sylvestre
- Université de Paris, Institut des Maladies Musculo-Squelettiques, Orofacial Pathologies, Imaging and Biotherapies Laboratory URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), 92120 Montrouge, France; (N.B.-S.); (P.B.); (C.C.)
- AP-HP, Department of Periodontology, Rothschild Hospital, European Postgraduate in Periodontology and Implantology, Université de Paris, 75012 Paris, France
| | - Philippe Bouchard
- Université de Paris, Institut des Maladies Musculo-Squelettiques, Orofacial Pathologies, Imaging and Biotherapies Laboratory URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), 92120 Montrouge, France; (N.B.-S.); (P.B.); (C.C.)
- AP-HP, Department of Periodontology, Rothschild Hospital, European Postgraduate in Periodontology and Implantology, Université de Paris, 75012 Paris, France
| | - Catherine Chaussain
- Université de Paris, Institut des Maladies Musculo-Squelettiques, Orofacial Pathologies, Imaging and Biotherapies Laboratory URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), 92120 Montrouge, France; (N.B.-S.); (P.B.); (C.C.)
- AP-HP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Dental Medicine Department, Bretonneau Hospital, GHN-Université de Paris, 75018 Paris, France
| | - Claire Bardet
- Université de Paris, Institut des Maladies Musculo-Squelettiques, Orofacial Pathologies, Imaging and Biotherapies Laboratory URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), 92120 Montrouge, France; (N.B.-S.); (P.B.); (C.C.)
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Hilliquin S, Zhukouskaya V, Fogel O, Chaussain C, Miceli Richard C, Bardet C. POS0046 MICRO-CT ANALYSIS OF SACROILIAC JOINT AS A NEW TOOL FOR STUDYING TRABECULAR BONE AND OSTEO-ARTICULAR LESIONS IN MURINE MODELS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Skeletal disorders affect the skeleton in different ways with some bones being very impaired while others less severely. In translational studies using murine models of human disorders, the bone phenotype is mainly evaluated at distal femur or proximal tibia. The sacroiliac joint (SIJ), which connects the spine to the pelvis, is involved in the balanced transfer of mechanical energy from the lumbar spine to the lower extremities. Its role in biomechanical stress makes it of particular interest in various bone diseases. For instance, patients with X-linked hypophosphatemia (XLH), who mainly display osteomalacia, are frequently affected with early osteoarthritis of the SIJ. Interestingly, we recently showed that the Hyp mouse, a murine model of XLH that greatly mimics the human disorder, displayed early and severe osteoarticular alterations of the SIJ [1].Objectives:Here, using the Hyp mouse as a model, we show that the SIJ constitutes a highly reliable joint to investigate in murine models of skeletal disorders.Methods:SIJ and distal femur were evaluated in 3-month-old Hyp mice compared to wild-type (WT) mice (n=10 per group). using high-resolution microCT. Measurements of trabecular and cortical bone parameters at sacral and iliac sides and trabecular bone parameters at distal femur were performed with the CTanalyzer software.Results:Hyp mice displayed a significant reduction in parameters of trabecular bone at distal femur, compared to WT mice (Figure 1A). Similarly, a reduction in trabecular bone was shown in Hyp SIJ compared to WT at sacral side (Figure 1B). There was a significant positive correlation between trabecular bone parameters of distal femur and sacral side of SIJ in Hyp mice (e.g. bone volume to total volume [BV/TV]: r = 0,763 p: 0,01). Bone parameters such as sacral BV/TV were higher in comparison to femoral parameters (Figure 1C). No difference was observed on trabecular bone parameters at iliac side of Hyp and WT mice. However, regarding the cortical bone of SIJ, significant alterations were noticed especially at iliac side of SIJ in Hyp mice compared to WT mice. An increase in open cortical porosity, and a decrease in cortical area fraction, as well as in average cortical thickness at iliac side of SIJ in Hyp mice were suggestive of osteo-articular lesions, characteristic for XLH.Conclusion:Trabecular bone parameters at the SIJ, in comparison to the femur, appear to be a relevant alternative to evaluate bone alterations in Hyp mice. Our study suggests that the SIJ represents a valuable tool to investigate both bone and local osteo-articular alterations for murine models of skeletal disorders.Figure 1.A) Bone to total volume ratio in the trabecular bone of distal femur, expressed in percent. B) Bone to total volume ratio in the trabecular bone of sacral slope of the SIJ, expressed in percent. C) Bone to total volume ratio in the trabecular bone of distal femur and sacral slope of the SIJ of Hyp mice, expressed in percent. *: p < 0,05; **: p < 0,01; ***: p< 0,001; ****: p< 0,0001.References:[1]Cauliez, Zhukouskaya et al. Impact of Early Conventional Treatment on Adult Bone and Joints in a Murine Model of X-Linked Hypophosphatemia. Front Cell Dev Biol.:doi: 10.3389/fcell.2020.591417Disclosure of Interests:None declared.
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Cauliez A, Zhukouskaya VV, Hilliquin S, Sadoine J, Slimani L, Miceli-Richard C, Briot K, Linglart A, Chaussain C, Bardet C. Impact of Early Conventional Treatment on Adult Bone and Joints in a Murine Model of X-Linked Hypophosphatemia. Front Cell Dev Biol 2021; 8:591417. [PMID: 33681179 PMCID: PMC7930336 DOI: 10.3389/fcell.2020.591417] [Citation(s) in RCA: 5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 12/07/2020] [Indexed: 11/13/2022] Open
Abstract
X-linked hypophosphatemia (XLH) is the most common form of genetic rickets. Mainly diagnosed during childhood because of growth retardation and deformities of the lower limbs, the disease affects adults with early enthesopathies and joint structural damage that significantly alter patient quality of life. The conventional treatment, based on phosphorus supplementation and active vitamin D analogs, is commonly administered from early childhood to the end of growth; unfortunately, it does not allow complete recovery from skeletal damage. Despite adequate treatment during childhood, bone and joint complications occur in adults and become a dominant feature in the natural history of the disease. Our previous data showed that the Hyp mouse is a relevant model of XLH for studying early enthesophytes and joint structural damage. Here, we studied the effect of conventional treatment on the development of bone and joint alterations in this mouse model during growth and young adulthood. Mice were supplemented with oral phosphorus and calcitriol injections, following two timelines: (i) from weaning to 3 months of age and (ii) from 2 to 3 months to evaluate the effects of treatment on the development of early enthesophytes and joint alterations, and on changes in bone and joint deformities already present, respectively. We showed that early conventional treatment improved bone microarchitecture, and partially prevented bone and joint complications, but with no noticeable improvement in enthesophytes. In contrast, later administration had limited efficacy in ameliorating bone and joint alterations. Despite the improvement in bone microarchitecture, the conventional treatment, early or late, had no effect on osteoid accumulation. Our data underline the usefulness of the Hyp murine model for preclinical studies on skeletal and extraskeletal lesions. Although the early conventional treatment is important for the improvement of bone microarchitecture, the persistence of osteomalacia implies seeking new therapeutic strategies, in particular anti-FGF23 approach, in order to optimize the treatment of XLH.
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Affiliation(s)
- Axelle Cauliez
- Université de Paris, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP 2496 and FHU-DDS-Net, Dental School, and Plateforme d'Imagerie du Vivant (PIV), Montrouge, France
| | - Volha V Zhukouskaya
- Université de Paris, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP 2496 and FHU-DDS-Net, Dental School, and Plateforme d'Imagerie du Vivant (PIV), Montrouge, France.,INTEGRARE, Genethon, Inserm, Université d'Evry, Université Paris-Saclay, Evry, France.,Centre de référence des maladies rares du métabolisme du calcium et du phosphate, Plateforme d'expertise maladies rares Paris Saclay, filière OSCAR, EndoRare and BOND ERN, Hôpital de Bicêtre, Le Kremlin-Bicêtre, France
| | - Stéphane Hilliquin
- Université de Paris, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP 2496 and FHU-DDS-Net, Dental School, and Plateforme d'Imagerie du Vivant (PIV), Montrouge, France.,Department of Rheumatology, Cochin Hospital, Université de Paris, Paris, France
| | - Jérémy Sadoine
- Université de Paris, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP 2496 and FHU-DDS-Net, Dental School, and Plateforme d'Imagerie du Vivant (PIV), Montrouge, France
| | - Lotfi Slimani
- Université de Paris, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP 2496 and FHU-DDS-Net, Dental School, and Plateforme d'Imagerie du Vivant (PIV), Montrouge, France
| | | | - Karine Briot
- Centre de référence des maladies rares du métabolisme du calcium et du phosphate, Plateforme d'expertise maladies rares Paris Saclay, filière OSCAR, EndoRare and BOND ERN, Hôpital de Bicêtre, Le Kremlin-Bicêtre, France.,Department of Rheumatology, Cochin Hospital, Université de Paris, Paris, France
| | - Agnès Linglart
- Centre de référence des maladies rares du métabolisme du calcium et du phosphate, Plateforme d'expertise maladies rares Paris Saclay, filière OSCAR, EndoRare and BOND ERN, Hôpital de Bicêtre, Le Kremlin-Bicêtre, France.,Université Paris-Saclay, AP-HP, Service d'endocrinologie et diabète de l'enfant, Service de médecine des adolescents, Hôpital de Bicêtre, INSERM U1185, Le Kremlin-Bicêtre, France
| | - Catherine Chaussain
- Université de Paris, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP 2496 and FHU-DDS-Net, Dental School, and Plateforme d'Imagerie du Vivant (PIV), Montrouge, France.,Centre de référence des maladies rares du métabolisme du calcium et du phosphate, Plateforme d'expertise maladies rares Paris Saclay, filière OSCAR, EndoRare and BOND ERN, Hôpital de Bicêtre, Le Kremlin-Bicêtre, France.,AP-HP Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Dental Medicine Department, Bretonneau Hospital, GHN, Paris, France
| | - Claire Bardet
- Université de Paris, Laboratory Orofacial Pathologies, Imaging and Biotherapies URP 2496 and FHU-DDS-Net, Dental School, and Plateforme d'Imagerie du Vivant (PIV), Montrouge, France
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Crenn MJ, Benoit A, Rohman G, Guilbert T, Fromentin O, Attal JP, Bardet C. Selective Laser Melted Titanium Alloy for Transgingival Components: Influence of Surface Condition on Fibroblast Cell Behavior. J Prosthodont 2021; 31:50-58. [PMID: 33569866 DOI: 10.1111/jopr.13347] [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] [Accepted: 02/03/2021] [Indexed: 11/29/2022] Open
Abstract
PURPOSE To mechanically characterize and assess the biological properties of Ti6Al4V surfaces obtained by Selective Laser Melting in order to determine whether this process is conceivable for production of implant-supported prostheses and particularly trans-gingival components. As-built and polished surfaces were studied in comparison with components obtained by computer numerical control machining technology in order to consider whether the properties are in the same range as the conventional method currently used. MATERIALS AND METHODS Cylindrical specimens of Ti6Al4V (n = 6) were built with Selective Laser Melting for the characterization of mechanical properties according to ISO 22674 and discs (n = 12) were fabricated in the same conditions for cytotoxicity evaluation. Discs (n = 12) of Ti6Al4V were also obtained by computer numerical control machining as control. Half of the number of discs (n = 6) from each process were polished, to simulate the laboratory protocol for polishing of transmucosal components and half of the discs remained unaltered (as-built). Surface roughness measurements of disc specimens (as-built and polished) were compared with computer numerical control milling specimens (as-built and polished). Proliferation of human gingival fibroblasts on Ti6Al4V surfaces was also assessed for each condition. Viability and cell morphology were then evaluated qualitatively. Ra and Sa data were compared using Student's t-test (α = 0.05) and metabolic activity data were compared using Kruskal-Wallis statistical test (α = 0.05). RESULTS Selective Laser Melting specimens showed elongation at break greater than 2% and 0.2% yield strength better than 500MPa which complied with ISO 22674 standards. Although Selective Laser Melting samples displayed significantly increased roughness on as-built surfaces compared to computer numerically controlled milling samples (p < 0.05), no statistically significant difference was observed after mechanical polishing (p = 0.279). Regarding metabolic activity, no statistical difference was observed between groups at day 3 (p > 0.05) and fibroblasts showed a viability higher than 97% on all discs. Cell shapes on polished samples suggested moderate adhesion compared to unpolished samples. CONCLUSION With the manufacturing parameters selected in this study, Selective Laser Melting of Ti6Al4V appeared to be compatible with a prosthetic application type 4 according to ISO 22674. Surfaces obtained, followed by recommended postprocessing provided components with equivalent biological properties compared to computer numerical control machining technology.
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Affiliation(s)
| | | | | | | | | | | | - Claire Bardet
- Laboratory Orofacial Pathologies, Imaging and Biotherapies URP2496 and FHU-DDS-Net, Dental School, Université de Paris, Montrouge, France
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12
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Faraji-Bellée CA, Cauliez A, Salmon B, Fogel O, Zhukouskaya V, Benoit A, Schinke T, Roux C, Linglart A, Miceli-Richard C, Chaussain C, Briot K, Bardet C. Development of Enthesopathies and Joint Structural Damage in a Murine Model of X-Linked Hypophosphatemia. Front Cell Dev Biol 2020; 8:854. [PMID: 33072734 PMCID: PMC7536578 DOI: 10.3389/fcell.2020.00854] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 06/05/2020] [Accepted: 08/10/2020] [Indexed: 12/14/2022] Open
Abstract
X-linked hypophosphatemia (XLH) is characterized by rickets and osteomalacia, caused by inactivating mutations in the Phosphate-regulating endopeptidase homolog X-linked (PHEX) gene. With aging, adult patients develop paradoxical heterotopic calcifications of tendons and ligaments at their insertion sites (enthesophytes), and joint alterations. Understanding the progression of this structural damage that severely affects patients’ quality of life will help to improve the management of XLH. Here, we characterized the occurrence of enthesophytes and joint alterations through a 12 month in vivo micro-CT follow-up in the Hyp mouse, a murine model of XLH (n = 5 mice per group). Similar to adult patients with XLH, Hyp mice developed calcaneal enthesophytes, hip joint alterations, erosions of the sacroiliac joints and periarticular calcifications. These lesions were already present at month 3 and gradually worsened over time. In sharp contrast, no abnormalities were observed in control mice at early time points. Histological analyses confirmed the presence of bone erosions, calcifications and expansion of mineralizing enthesis fibrocartilage in Hyp mice and their absence in controls and suggested that new bone formation is driven by altered mechanical strain. Interestingly, despite a strong deformation of the curvature, none of the Hyp mice displayed enthesophyte at the spine. Peripheral enthesophytes and joint alterations develop at the early stages of the disease and gradually worsen overtime. Overall, our findings highlight the relevance of this preclinical model to test new therapies aiming to prevent bone and joint complications in XLH.
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Affiliation(s)
- Carole-Anne Faraji-Bellée
- Université de Paris, Laboratory Orofacial Pathologies, Imaging and Biotherapies UR 2496, Dental School, Montrouge, France
| | - Axelle Cauliez
- Université de Paris, Laboratory Orofacial Pathologies, Imaging and Biotherapies UR 2496, Dental School, Montrouge, France
| | - Benjamin Salmon
- Université de Paris, Laboratory Orofacial Pathologies, Imaging and Biotherapies UR 2496, Dental School, Montrouge, France.,APHP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Dental Medicine Department, Bretonneau Hospital, Paris, France
| | - Olivier Fogel
- Department of Rheumatology, Cochin Hospital, Université de Paris, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, and Reference Center for Rare Genetic Bone Diseases, Cochin Hospital, Paris, France
| | - Volha Zhukouskaya
- Université de Paris, Laboratory Orofacial Pathologies, Imaging and Biotherapies UR 2496, Dental School, Montrouge, France.,APHP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Filière OSCAR and Platform of Expertise for Rare Diseases Paris-Sud, Bicêtre Paris-Sud Hospital, Le Kremlin Bicêtre, France
| | - Aurélie Benoit
- Université de Paris, URB2I, UR 4462, Dental School, Montrouge, France
| | - Thorsten Schinke
- Department of Osteology and Biomechanics, University Medical Center Hamburg Eppendorf, Hamburg, Germany
| | - Christian Roux
- Department of Rheumatology, Cochin Hospital, Université de Paris, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, and Reference Center for Rare Genetic Bone Diseases, Cochin Hospital, Paris, France
| | - Agnès Linglart
- APHP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Filière OSCAR and Platform of Expertise for Rare Diseases Paris-Sud, Bicêtre Paris-Sud Hospital, Le Kremlin Bicêtre, France.,APHP, Department of Endocrinology and Diabetology for Children, Bicêtre Paris Sud Hospital, Le Kremlin-Bicêtre, France.,Paris Sud - Paris Saclay University, Faculté de Médecine, Le Kremlin - Bicêtre, France
| | - Corinne Miceli-Richard
- Department of Rheumatology, Cochin Hospital, Université de Paris, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, and Reference Center for Rare Genetic Bone Diseases, Cochin Hospital, Paris, France
| | - Catherine Chaussain
- Université de Paris, Laboratory Orofacial Pathologies, Imaging and Biotherapies UR 2496, Dental School, Montrouge, France.,APHP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Dental Medicine Department, Bretonneau Hospital, Paris, France.,APHP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Filière OSCAR and Platform of Expertise for Rare Diseases Paris-Sud, Bicêtre Paris-Sud Hospital, Le Kremlin Bicêtre, France
| | - Karine Briot
- Department of Rheumatology, Cochin Hospital, Université de Paris, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, and Reference Center for Rare Genetic Bone Diseases, Cochin Hospital, Paris, France.,APHP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Filière OSCAR and Platform of Expertise for Rare Diseases Paris-Sud, Bicêtre Paris-Sud Hospital, Le Kremlin Bicêtre, France
| | - Claire Bardet
- Université de Paris, Laboratory Orofacial Pathologies, Imaging and Biotherapies UR 2496, Dental School, Montrouge, France
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Bacchetta J, Bardet C, Prié D. Physiology of FGF23 and overview of genetic diseases associated with renal phosphate wasting. Metabolism 2020; 103S:153865. [PMID: 30664852 DOI: 10.1016/j.metabol.2019.01.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [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: 11/05/2018] [Revised: 01/08/2019] [Accepted: 01/16/2019] [Indexed: 12/31/2022]
Abstract
Phosphate is a cornerstone of several physiological pathways including skeletal development, bone mineralization, membrane composition, nucleotide structure, maintenance of plasma pH, and cellular signaling. The kidneys have a key role in phosphate homeostasis with three hormones having important functions in renal phosphate handling or intestinal absorption: parathyroid hormone (PTH), fibroblast growth factor 23 (FGF23), and 1-25-dihydroxyvitamin D (1,25(OH)2D). FGF23 is mainly synthesized by osteocytes; it is a direct phosphaturic factor that also inhibits 1,25(OH)2D and PTH. In addition to crucial effects on phosphate and calcium metabolism, FGF23 also has 'off-target' effects notably on the cardiovascular, immune and central nervous systems. Genetic diseases may affect the FGF23 pathway, resulting in either increased FGF23 levels leading to hypophosphatemia (such as in X-linked hypophosphatemia) or defective secretion/action of intact FGF23 inducing hyperphosphatemia (such as in familial tumoral calcinosis). The aim of this review is to provide an overview of FGF23 physiology and pathophysiology in X-linked hypophosphatemia, with a focus on FGF23-associated genetic diseases.
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Affiliation(s)
- Justine Bacchetta
- Reference Center for Rare Renal Disorders, Reference Center for Rare Disorders of Calcium and Phosphate Metabolism, Department of Pediatric Nephrology, Rheumatology and Dermatology, Femme Mère Enfant Hospital, Bron Cedex, France; Lyon-Est Medical School, Lyon 1 University, Lyon, France; INSERM 1033, LYOS, Bone Disorders Prevention, Lyon, France.
| | - Claire Bardet
- Paris Descartes University, EA2496, Faculty of Dental Surgery, Montrouge, France
| | - Dominique Prié
- Paris Descartes University of Medicine, Necker-Enfants Malades Institute, INSERM U1151, France; Functional Exploration Department, Necker-Enfants Malades Hospital, AP-HP, Paris, France
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14
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Crenn MJ, Benoit A, Rohman G, Guilbert T, Chaussain C, Fromentin O, Attal JP, Bardet C. Additive manufactured titanium for prosthetic application in dentistry: surface topography characterization and in vitro cellular response of human gingival fibroblasts (HGFs). Comput Methods Biomech Biomed Engin 2019. [DOI: 10.1080/10255842.2020.1713467] [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] [Indexed: 10/24/2022]
Affiliation(s)
- M. J. Crenn
- Innovative Dental Materials and Interfaces Research Unit (URB2i), Faculty of Dental Surgery, Paris Descartes University – Paris 13 University, Montrouge, France
| | - A. Benoit
- Innovative Dental Materials and Interfaces Research Unit (URB2i), Faculty of Dental Surgery, Paris Descartes University – Paris 13 University, Montrouge, France
| | - G. Rohman
- Innovative Dental Materials and Interfaces Research Unit (URB2i), Faculty of Dental Surgery, Paris Descartes University – Paris 13 University, Montrouge, France
| | - T. Guilbert
- EA2496, Faculty of Dental Surgery, Paris Descartes University, Montrouge, France
| | - C. Chaussain
- EA2496, Faculty of Dental Surgery, Paris Descartes University, Montrouge, France
| | - O. Fromentin
- Innovative Dental Materials and Interfaces Research Unit (URB2i), Faculty of Dental Surgery, Paris Descartes University – Paris 13 University, Montrouge, France
| | - J. P. Attal
- Innovative Dental Materials and Interfaces Research Unit (URB2i), Faculty of Dental Surgery, Paris Descartes University – Paris 13 University, Montrouge, France
| | - C. Bardet
- EA2496, Faculty of Dental Surgery, Paris Descartes University, Montrouge, France
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15
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Coyac BR, Falgayrac G, Penel G, Schmitt A, Schinke T, Linglart A, McKee MD, Chaussain C, Bardet C. Impaired mineral quality in dentin in X-linked hypophosphatemia. Connect Tissue Res 2018; 59:91-96. [PMID: 29745817 DOI: 10.1080/03008207.2017.1417989] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
X-linked hypophosphatemia (XLH) is a skeletal disorder arising from mutations in the PHEX gene, transmitted in most cases as an X-linked dominant trait. PHEX deficiency leads to renal phosphate wasting and hypophosphatemia, as well as impaired mineralization of bone and dentin, resulting in severe skeletal and dental complications. Dentin mineralization defects appear as characteristic, large interglobular spaces resulting from the lack of fusion of calculospherites in the circumpulpal region during the mineralization process. Here, we examined changes in the composition and structure of dentin using Raman spectroscopy on XLH human teeth, and using transmission electron microscopy on the dentin of Hyp mice (the murine model of XLH). The dentin of patients with XLH showed changes in the quality of the apatitic mineral, with greater carbonate substitution and lower crystallinity compared to the dentin of age-matched control teeth. In addition, ultrastructural analysis by transmission electron microscopy revealed a major disorganization of the peri- and intertubular structure of the dentin, with odontoblast processes residing within an unmineralized matrix sheath in the Hyp mouse. Taken together, these results indicate that like for bone and tooth cementum, there are impaired mineral quality and matrix changes in XLH dentin reflecting high sensitivity to systemic serum phosphate levels and possibly other local changes in the dentin matrix.
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Affiliation(s)
- Benjamin R Coyac
- a Orofacial Pathologies, Imaging and Biotherapies Laboratory EA2496, Dental School , Paris Descartes University , Paris , France.,b Department of Periodontology, U.F.R. of Odontology , Rothschild Hospital, AP-HP, Paris Diderot University , Paris , France
| | - Guillaume Falgayrac
- c EA 4490-PMOI-Physiopathologie des Maladies Osseuses Inflammatoires , Univ. Lille, Univ. Littoral Côte d'Opale , Lille , France
| | - Guillaume Penel
- c EA 4490-PMOI-Physiopathologie des Maladies Osseuses Inflammatoires , Univ. Lille, Univ. Littoral Côte d'Opale , Lille , France
| | - Alain Schmitt
- d Cochin Institute, Transmission Electron Microscopy Platform, INSERM U1016, CNRS UMR8104 , Paris Descartes University Sorbonne Paris Cité , Paris , France
| | - Thorsten Schinke
- e Department of Osteology and Biomechanics , University Medical Center Hamburg-Eppendorf , Hamburg , Germany
| | - Agnès Linglart
- f APHP, Reference Center for Rare Disorders of Calcium and Phosphate Metabolism , Plateforme d'Expertise Paris Sud Maladies Rares and Filière OSCAR , Le Kremlin Bicêtre , France.,g INSERM U1169 , University Paris Sud Paris-Saclay , Le Kremelin Bicêtre, France
| | - Marc D McKee
- h Faculties of Dentistry and Medicine, Department of Anatomy and Cell Biology , McGill University , Montreal , Canada
| | - Catherine Chaussain
- a Orofacial Pathologies, Imaging and Biotherapies Laboratory EA2496, Dental School , Paris Descartes University , Paris , France.,i Department of Odontology , Bretonneau Hospital PNVS, AP-HP , Paris , France
| | - Claire Bardet
- a Orofacial Pathologies, Imaging and Biotherapies Laboratory EA2496, Dental School , Paris Descartes University , Paris , France
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16
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Violeau M, Bardet C, Vesselle G. Une luxation du genou bi-croisée post-traumatique : un pronostic fonctionnel péjoratif. Ann Fr Med Urgence 2017. [DOI: 10.1007/s13341-017-0773-x] [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: 11/24/2022]
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17
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Coyac BR, Falgayrac G, Baroukh B, Slimani L, Sadoine J, Penel G, Biosse-Duplan M, Schinke T, Linglart A, McKee MD, Chaussain C, Bardet C. Tissue-specific mineralization defects in the periodontium of the Hyp mouse model of X-linked hypophosphatemia. Bone 2017; 103:334-346. [PMID: 28764922 DOI: 10.1016/j.bone.2017.07.026] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [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: 06/20/2017] [Revised: 07/22/2017] [Accepted: 07/27/2017] [Indexed: 01/28/2023]
Abstract
X-linked hypophosphatemia (XLH) is a dento-osseous disorder caused by inactivating mutations in the PHEX gene, leading to renal phosphate wasting and hypophosphatemia, and impaired mineralization of bones and teeth. In the oral cavity, recent reports suggest a higher susceptibility of XLH patients to periodontitis, where patients present with impaired tooth cementum - a bone-like tissue involved in tooth attachment to the jaw bones and post-eruption tooth positioning - and a higher frequency of intrabony defects. In the present study, the pathobiology of alveolar bone and tooth cementum was investigated in the Hyp mouse, the murine analog of XLH. PHEX deficiency in XLH/Hyp dramatically alters the periodontal phenotype, with hypoplasia of tooth root cementum associated with a lack of periodontal ligament attachment and the presence of an immature apatitic mineral phase of all periodontal mineralized tissues. Challenging the Hyp periodontium in two surgical experimental models - ligature-induced periodontal breakdown and repair, and a model of tooth movement adaptation inducing cementum formation - we show that bone and cementum formation, and their healing, are altered. Bone and cementum mineralization appear similarly disturbed, where hypomineralized pericellular matrix surrounds cells, and where the protein osteopontin (OPN, a mineralization inhibitor) accumulates in a tissue-specific manner, most notably in the perilacunar matrix surrounding osteocytes. Although the pathobiology is different between XLH/Hyp bone and cementum, our results show a major XLH phenotype in oral mineralized tissues consistent with variations in patient susceptibility to periodontal disorders.
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Affiliation(s)
- Benjamin R Coyac
- EA2496, Faculty of Dentistry, Paris Descartes University, Montrouge, France; Department of Periodontology, U.F.R. of Odontology, Rothschild Hospital, AP-HP, Paris Diderot University, Paris, France
| | - Guillaume Falgayrac
- Univ. Lille, Univ. Littoral Côte d'Opale, EA 4490 - PMOI - Physiopathologie des Maladies Osseuses Inflammatoires, F-59000 Lille, France
| | - Brigitte Baroukh
- EA2496, Faculty of Dentistry, Paris Descartes University, Montrouge, France
| | - Lotfi Slimani
- EA2496, Faculty of Dentistry, Paris Descartes University, Montrouge, France
| | - Jérémy Sadoine
- EA2496, Faculty of Dentistry, Paris Descartes University, Montrouge, France
| | - Guillaume Penel
- Univ. Lille, Univ. Littoral Côte d'Opale, EA 4490 - PMOI - Physiopathologie des Maladies Osseuses Inflammatoires, F-59000 Lille, France
| | - Martin Biosse-Duplan
- Department of Odontology, Bretonneau Hospital PNVS, AP-HP, Paris, France; APHP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Filière OSCAR and Plateforme d'Expertise Maladies Rares Paris-Sud, Hôpital Bicêtre Paris Sud, Le Kremlin Bicêtre, France
| | - Thorsten Schinke
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Agnès Linglart
- APHP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Filière OSCAR and Plateforme d'Expertise Maladies Rares Paris-Sud, Hôpital Bicêtre Paris Sud, Le Kremlin Bicêtre, France; INSERM U1169, Hôpital Bicêtre, Le Kremlin Bicêtre, and Université Paris-Saclay, France
| | - Marc D McKee
- Faculties of Dentistry and Medicine, Department of Anatomy and Cell Biology, McGill University, Montreal, Canada
| | - Catherine Chaussain
- EA2496, Faculty of Dentistry, Paris Descartes University, Montrouge, France; Department of Odontology, Bretonneau Hospital PNVS, AP-HP, Paris, France; APHP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Filière OSCAR and Plateforme d'Expertise Maladies Rares Paris-Sud, Hôpital Bicêtre Paris Sud, Le Kremlin Bicêtre, France
| | - Claire Bardet
- EA2496, Faculty of Dentistry, Paris Descartes University, Montrouge, France.
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18
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Coyac BR, Hoac B, Chafey P, Falgayrac G, Slimani L, Rowe PS, Penel G, Linglart A, McKee MD, Chaussain C, Bardet C. Defective Mineralization in X-Linked Hypophosphatemia Dental Pulp Cell Cultures. J Dent Res 2017; 97:184-191. [PMID: 28880715 DOI: 10.1177/0022034517728497] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
X-linked hypophosphatemia (XLH) is a skeletal disease caused by inactivating mutations in the PHEX gene. Mutated or absent PHEX protein/enzyme leads to a decreased serum phosphate level, which cause mineralization defects in the skeleton and teeth (osteomalacia/odontomalacia). It is not yet altogether clear whether these manifestations are caused solely by insufficient circulating phosphate availability for mineralization or also by a direct, local intrinsic effect caused by impaired PHEX activity. Here, we evaluated the local role of PHEX in a 3-dimensional model of extracellular matrix (ECM) mineralization. Dense collagen hydrogels were seeded either with human dental pulp cells from patients with characterized PHEX mutations or with sex- and age-matched healthy controls and cultured up to 24 d using osteogenic medium with standard phosphate concentration. Calcium quantification, micro-computed tomography, and histology with von Kossa staining for mineral showed significantly lower mineralization in XLH cell-seeded scaffolds, using nonparametric statistical tests. While apatitic mineralization was observed along collagen fibrils by electron microscopy in both groups, Raman microspectrometry indicated that XLH cells harboring the PHEX mutation produced less mineralized scaffolds having impaired mineral quality with less carbonate substitution and lower crystallinity. In the XLH cultures, immunoblotting revealed more abundant osteopontin (OPN), dentin matrix protein 1 (DMP1), and matrix extracellular phosphoglycoprotein (MEPE) than controls, as well as the presence of fragments of these proteins not found in controls, suggesting a role for PHEX in SIBLING protein degradation. Immunohistochemistry revealed altered OPN and DMP1 associated with an increased alkaline phosphatase staining in the XLH cultures. These results are consistent with impaired PHEX activity having local ECM effects in XLH. Future treatments for XLH should target both systemic and local manifestations.
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Affiliation(s)
- B R Coyac
- 1 EA 2496 Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School University Paris Descartes Sorbonne Paris Cité, and Life imaging Platform (PIV), Montrouge, France.,2 Department of Periodontology, U.F.R. of Odontology, Rothschild Hospital, AP-HP, Paris Diderot University, Paris, France.,3 Faculty of Dentistry, Division of Biomedical Sciences, McGill University, Montreal, QC, Canada
| | - B Hoac
- 3 Faculty of Dentistry, Division of Biomedical Sciences, McGill University, Montreal, QC, Canada
| | - P Chafey
- 4 INSERM U1016, Institut Cochin and Proteomic core facility of University Paris Descartes (3P5) Sorbonne Paris Cité, Paris, France
| | - G Falgayrac
- 5 Lille University, University of Littoral Côte d'Opale, EA 4490-PMOI-Pathophysiology of Inflammatory Bone Diseases, Lille, France
| | - L Slimani
- 1 EA 2496 Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School University Paris Descartes Sorbonne Paris Cité, and Life imaging Platform (PIV), Montrouge, France
| | - P S Rowe
- 6 The Kidney Institute, University of Kansas Medical Center, Kansas City, KS, USA
| | - G Penel
- 5 Lille University, University of Littoral Côte d'Opale, EA 4490-PMOI-Pathophysiology of Inflammatory Bone Diseases, Lille, France
| | - A Linglart
- 7 APHP, Reference Center for Rare Disorders of Calcium and Phosphate Metabolism, Plateforme of Expertise Paris Sud for Rare Disesdes, filière OSCAR, Bicêtre Hospital, Le Kremlin-Bicêtre, France.,8 INSERM U1169, University Paris Sud Paris-Saclay, Paris, France
| | - M D McKee
- 3 Faculty of Dentistry, Division of Biomedical Sciences, McGill University, Montreal, QC, Canada.,9 Faculty of Medicine, Department of Anatomy and Cell Biology, McGill University, Montreal, QC, Canada
| | - C Chaussain
- 1 EA 2496 Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School University Paris Descartes Sorbonne Paris Cité, and Life imaging Platform (PIV), Montrouge, France.,7 APHP, Reference Center for Rare Disorders of Calcium and Phosphate Metabolism, Plateforme of Expertise Paris Sud for Rare Disesdes, filière OSCAR, Bicêtre Hospital, Le Kremlin-Bicêtre, France.,10 Department of Odontology, Bretonneau Hospital PNVS, AP-HP, Paris, France
| | - C Bardet
- 1 EA 2496 Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School University Paris Descartes Sorbonne Paris Cité, and Life imaging Platform (PIV), Montrouge, France
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19
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Mangione F, EzEldeen M, Bardet C, Lesieur J, Bonneau M, Decup F, Salmon B, Jacobs R, Chaussain C, Opsahl-Vital S. Implanted Dental Pulp Cells Fail to Induce Regeneration in Partial Pulpotomies. J Dent Res 2017; 96:1406-1413. [PMID: 28796952 DOI: 10.1177/0022034517725523] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [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: 01/09/2023] Open
Abstract
Cell-based partial pulp regeneration is one of the promising approaches to obtain newly formed functional dentin-pulp complex. It relies on the preservation of the healthy tissue while regenerating the damaged pulp. The aim of this study was to investigate whether this regenerative process could be achieved by implanting porcine dental pulp cells (pDPCs) in pulp defects in the minipig. By split-mouth model, self-assembling injectable nanopeptide hydrogel, with and without pDPCs, was implanted after cameral pulpotomy in premolars and molars. At day 21 after surgery, 3-dimensional morphometric characterization, Masson's trichrome staining, and immunolabeling for DSP and BSP (dentin sialoprotein and bone sialoprotein) were performed on treated teeth. This study demonstrated no pulp regeneration but systematic reparative dentinogenesis. In fact, regardless of the presence of pDPCs in the scaffold, an osteodentin bridge-the microarchitecture of which significantly differed from the native dentin-was systematically obtained. Furthermore, the presence of pDPCs significantly affected the microstructure of the dentin bridges. In the radicular area of each treated tooth, hyperemia in the remaining pulp and external root resorptions were observed. Under the conditions tested in this work, pulp regeneration was not achieved, which highlights the need of further investigations to develop favorable regenerative microenvironment.
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Affiliation(s)
- F Mangione
- 1 EA 2496 Laboratory Orofacial Pathologies, Imagery and Biotherapies, Dental School and Life imaging Platform (PIV), University Paris Descartes Sorbonne Paris Cité, Montrouge, France.,2 AP-HP, Departments of Odontology, University Hospitals Albert Chenevier, Louis Mourier and Bretonneau "National Rare Diseases Center Metabolism Phosphorus and Calcium" and Charles Foix, Paris, France
| | - M EzEldeen
- 3 OMFS-IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, University of Leuven and Maxillofacial Surgery Department, University Hospitals Leuven, Leuven, Belgium
| | - C Bardet
- 1 EA 2496 Laboratory Orofacial Pathologies, Imagery and Biotherapies, Dental School and Life imaging Platform (PIV), University Paris Descartes Sorbonne Paris Cité, Montrouge, France
| | - J Lesieur
- 1 EA 2496 Laboratory Orofacial Pathologies, Imagery and Biotherapies, Dental School and Life imaging Platform (PIV), University Paris Descartes Sorbonne Paris Cité, Montrouge, France
| | - M Bonneau
- 4 XP-MED, Saint-Germain-en-Laye, France
| | - F Decup
- 1 EA 2496 Laboratory Orofacial Pathologies, Imagery and Biotherapies, Dental School and Life imaging Platform (PIV), University Paris Descartes Sorbonne Paris Cité, Montrouge, France.,2 AP-HP, Departments of Odontology, University Hospitals Albert Chenevier, Louis Mourier and Bretonneau "National Rare Diseases Center Metabolism Phosphorus and Calcium" and Charles Foix, Paris, France
| | - B Salmon
- 1 EA 2496 Laboratory Orofacial Pathologies, Imagery and Biotherapies, Dental School and Life imaging Platform (PIV), University Paris Descartes Sorbonne Paris Cité, Montrouge, France.,2 AP-HP, Departments of Odontology, University Hospitals Albert Chenevier, Louis Mourier and Bretonneau "National Rare Diseases Center Metabolism Phosphorus and Calcium" and Charles Foix, Paris, France.,5 AP-HP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Filière OSCAR, Paris, France
| | - R Jacobs
- 3 OMFS-IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, University of Leuven and Maxillofacial Surgery Department, University Hospitals Leuven, Leuven, Belgium
| | - C Chaussain
- 1 EA 2496 Laboratory Orofacial Pathologies, Imagery and Biotherapies, Dental School and Life imaging Platform (PIV), University Paris Descartes Sorbonne Paris Cité, Montrouge, France.,2 AP-HP, Departments of Odontology, University Hospitals Albert Chenevier, Louis Mourier and Bretonneau "National Rare Diseases Center Metabolism Phosphorus and Calcium" and Charles Foix, Paris, France.,5 AP-HP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Filière OSCAR, Paris, France
| | - S Opsahl-Vital
- 1 EA 2496 Laboratory Orofacial Pathologies, Imagery and Biotherapies, Dental School and Life imaging Platform (PIV), University Paris Descartes Sorbonne Paris Cité, Montrouge, France.,2 AP-HP, Departments of Odontology, University Hospitals Albert Chenevier, Louis Mourier and Bretonneau "National Rare Diseases Center Metabolism Phosphorus and Calcium" and Charles Foix, Paris, France.,5 AP-HP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Filière OSCAR, Paris, France
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20
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Bardet C, Ribes S, Wu Y, Diallo MT, Salmon B, Breiderhoff T, Houillier P, Müller D, Chaussain C. Claudin Loss-of-Function Disrupts Tight Junctions and Impairs Amelogenesis. Front Physiol 2017; 8:326. [PMID: 28596736 PMCID: PMC5442167 DOI: 10.3389/fphys.2017.00326] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [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: 03/27/2017] [Accepted: 05/05/2017] [Indexed: 01/06/2023] Open
Abstract
Claudins are a family of proteins that forms paracellular barriers and pores determining tight junctions (TJ) permeability. Claudin-16 and -19 are pore forming TJ proteins allowing calcium and magnesium reabsorption in the thick ascending limb of Henle's loop (TAL). Loss-of-function mutations in the encoding genes, initially identified to cause Familial Hypomagnesemia with Hypercalciuria and Nephrocalcinosis (FHHNC), were recently shown to be also involved in Amelogenesis Imperfecta (AI). In addition, both claudins were expressed in the murine tooth germ and Claudin-16 knockout (KO) mice displayed abnormal enamel formation. Claudin-3, an ubiquitous claudin expressed in epithelia including kidney, acts as a barrier-forming tight junction protein. We determined that, similarly to claudin-16 and claudin-19, claudin-3 was expressed in the tooth germ, more precisely in the TJ located at the apical end of secretory ameloblasts. The observation of Claudin-3 KO teeth revealed enamel defects associated to impaired TJ structure at the secretory ends of ameloblasts and accumulation of matrix proteins in the forming enamel. Thus, claudin-3 protein loss-of-function disturbs amelogenesis similarly to claudin-16 loss-of-function, highlighting the importance of claudin proteins for the TJ structure. These findings unravel that loss-of-function of either pore or barrier-forming TJ proteins leads to enamel defects. Hence, the major structural function of claudin proteins appears essential for amelogenesis.
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Affiliation(s)
- Claire Bardet
- Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School, Paris Descartes University, Sorbonne Paris CitéParis, France
| | - Sandy Ribes
- Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School, Paris Descartes University, Sorbonne Paris CitéParis, France
| | - Yong Wu
- Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School, Paris Descartes University, Sorbonne Paris CitéParis, France.,Shanghai Key Laboratory of Stomatology, Department of Oral and Cranio-maxillofacial Science, Ninth People's Hospital, Shanghai Jiao Tong University School of MedicineShanghai, China
| | - Mamadou Tidiane Diallo
- Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School, Paris Descartes University, Sorbonne Paris CitéParis, France
| | - Benjamin Salmon
- Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School, Paris Descartes University, Sorbonne Paris CitéParis, France.,Department of Odontology, AP-HP, and Reference Center for Rare Dieases of the Metabolism of Calcium and Phosphorus, Nord Val de Seine Hospital (Bretonneau)Paris, France
| | - Tilman Breiderhoff
- Department of Pediatric Nephrology, Charité University School of MedicineBerlin, Germany
| | - Pascal Houillier
- Cordeliers Research Center, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale UMRS 1138, Paris-Diderot, Pierre et Marie Curie and Paris Descartes Universities, ERLParis, France
| | - Dominik Müller
- Department of Pediatric Nephrology, Charité University School of MedicineBerlin, Germany
| | - Catherine Chaussain
- Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School, Paris Descartes University, Sorbonne Paris CitéParis, France.,Department of Odontology, AP-HP, and Reference Center for Rare Dieases of the Metabolism of Calcium and Phosphorus, Nord Val de Seine Hospital (Bretonneau)Paris, France
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21
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Biosse Duplan M, Coyac BR, Bardet C, Zadikian C, Rothenbuhler A, Kamenicky P, Briot K, Linglart A, Chaussain C. Phosphate and Vitamin D Prevent Periodontitis in X-Linked Hypophosphatemia. J Dent Res 2016; 96:388-395. [PMID: 27821544 DOI: 10.1177/0022034516677528] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
X-linked hypophosphatemia (XLH) is a rare genetic skeletal disease where increased phosphate wasting in the kidney leads to hypophosphatemia and prevents normal mineralization of bone and dentin. Here, we examined the periodontal status of 34 adults with XLH and separated them according to the treatment they received for hypophosphatemia. We observed that periodontitis frequency and severity were increased in adults with XLH and that the severity varied according to the hypophosphatemia treatment. Patients who benefited from an early and continuous vitamin D and phosphate supplementation during their childhood presented less periodontal attachment loss than patients with late or incomplete supplementation. Continued hypophosphatemia treatment during adulthood further improved the periodontal health. Extracted teeth from patients with late or incomplete supplementation showed a strong acellular cementum hypoplasia when compared with age-matched healthy controls. These results show that XLH disturbs not only bone and dentin formation but also cementum and that the constitutional defect of the attachment apparatus is associated with attachment loss.
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Affiliation(s)
- M Biosse Duplan
- 1 Service d'Odontologie, Hôpital Bretonneau, HUPNVS, AP-HP, Paris, France.,2 Faculté de Chirurgie Dentaire, Université Paris Descartes, Montrouge, France.,3 Centre de Référence des Maladies Rares du Métabolisme du Calcium et du Phosphore, Plateforme d'expertise Paris Sud Maladies rares, filière OSCAR, Hôpital Bicêtre-Paris Sud, AP-HP, Le Kremlin Bicêtre, France
| | - B R Coyac
- 4 EA 2496, Faculté de Chirurgie Dentaire, Université Paris Descartes, Montrouge, France
| | - C Bardet
- 4 EA 2496, Faculté de Chirurgie Dentaire, Université Paris Descartes, Montrouge, France
| | - C Zadikian
- 1 Service d'Odontologie, Hôpital Bretonneau, HUPNVS, AP-HP, Paris, France.,2 Faculté de Chirurgie Dentaire, Université Paris Descartes, Montrouge, France
| | - A Rothenbuhler
- 3 Centre de Référence des Maladies Rares du Métabolisme du Calcium et du Phosphore, Plateforme d'expertise Paris Sud Maladies rares, filière OSCAR, Hôpital Bicêtre-Paris Sud, AP-HP, Le Kremlin Bicêtre, France.,5 Service d'endocrinologie, Hôpital Bicêtre, HUPS, AP-HP, Le Kremlin Bicêtre, France
| | - P Kamenicky
- 3 Centre de Référence des Maladies Rares du Métabolisme du Calcium et du Phosphore, Plateforme d'expertise Paris Sud Maladies rares, filière OSCAR, Hôpital Bicêtre-Paris Sud, AP-HP, Le Kremlin Bicêtre, France.,5 Service d'endocrinologie, Hôpital Bicêtre, HUPS, AP-HP, Le Kremlin Bicêtre, France
| | - K Briot
- 3 Centre de Référence des Maladies Rares du Métabolisme du Calcium et du Phosphore, Plateforme d'expertise Paris Sud Maladies rares, filière OSCAR, Hôpital Bicêtre-Paris Sud, AP-HP, Le Kremlin Bicêtre, France.,6 Service de Rhumatologie, Hôpital Cochin, HUPC, AP-HP, Paris, France
| | - A Linglart
- 3 Centre de Référence des Maladies Rares du Métabolisme du Calcium et du Phosphore, Plateforme d'expertise Paris Sud Maladies rares, filière OSCAR, Hôpital Bicêtre-Paris Sud, AP-HP, Le Kremlin Bicêtre, France.,5 Service d'endocrinologie, Hôpital Bicêtre, HUPS, AP-HP, Le Kremlin Bicêtre, France
| | - C Chaussain
- 1 Service d'Odontologie, Hôpital Bretonneau, HUPNVS, AP-HP, Paris, France.,3 Centre de Référence des Maladies Rares du Métabolisme du Calcium et du Phosphore, Plateforme d'expertise Paris Sud Maladies rares, filière OSCAR, Hôpital Bicêtre-Paris Sud, AP-HP, Le Kremlin Bicêtre, France.,4 EA 2496, Faculté de Chirurgie Dentaire, Université Paris Descartes, Montrouge, France
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22
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Figueres L, Wu Y, Bardet C, Chaussain C, Schmitt A, Müller D, Houillier P. Rôle de la claudine-16 dans les transports paracellulaires de la branche large ascendante de Henlé. Nephrol Ther 2016. [DOI: 10.1016/j.nephro.2016.07.360] [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: 11/25/2022]
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23
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Yamaguti PM, Neves FDAR, Hotton D, Bardet C, de La Dure-Molla M, Castro LC, Scher MDC, Barbosa ME, Ditsch C, Fricain JC, de La Faille R, Figueres ML, Vargas-Poussou R, Houillier P, Chaussain C, Babajko S, Berdal A, Acevedo AC. Amelogenesis imperfecta in familial hypomagnesaemia and hypercalciuria with nephrocalcinosis caused by CLDN19 gene mutations. J Med Genet 2016; 54:26-37. [PMID: 27530400 DOI: 10.1136/jmedgenet-2016-103956] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [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: 05/11/2016] [Revised: 07/15/2016] [Accepted: 07/27/2016] [Indexed: 12/30/2022]
Abstract
BACKGROUND Amelogenesis imperfecta (AI) is a group of genetic diseases characterised by tooth enamel defects. AI was recently described in patients with familial hypercalciuria and hypomagnesaemia with nephrocalcinosis (FHHNC) caused by CLDN16 mutations. In the kidney, claudin-16 interacts with claudin-19 to control the paracellular passage of calcium and magnesium. FHHNC can be linked to mutations in both genes. Claudin-16 was shown to be expressed during amelogenesis; however, no data are available on claudin-19. Moreover, the enamel phenotype of patients with CLDN19 mutations has never been described. In this study, we describe the clinical and genetic features of nine patients with FHHNC carrying CLDN19 mutations and the claudin-19 expression profile in rat ameloblasts. METHODS Six FHHNC Brazilian patients were subjected to mutational analysis. Three additional French patients were recruited for orodental characterisation. The expression profile of claudin-19 was evaluated by RT-qPCR and immunofluorescence using enamel epithelium from rat incisors. RESULTS All patients presented AI at different degrees of severity. Two new likely pathogenic variations in CLDN19 were found: p.Arg200Gln and p.Leu90Arg. RT-qPCR revealed low Cldn19 expression in ameloblasts. Confocal analysis indicated that claudin-19 was immunolocalised at the distal poles of secretory and maturing ameloblasts. CONCLUSIONS For the first time, it was demonstrated that AI is associated with FHHNC in patients carrying CLDN19 mutations. The data suggest claudin-19 as an additional determinant in enamel formation. Indeed, the coexistence of hypoplastic and hypomineralised AI in the patients was consistent with claudin-19 expression in both secretory and maturation stages. Additional indirect systemic effects cannot be excluded.
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Affiliation(s)
- Paulo Marcio Yamaguti
- Faculty of Health Sciences, Division of Dentistry, Oral Care Center for Inherited Diseases, University Hospital of Brasilia, University of Brasilia, Brasilia, Brazil.,Faculty of Health Sciences, Laboratory of Oral Histopathology, University of Brasilia, Brasilia, Brazil
| | | | - Dominique Hotton
- Centre de Recherche des Cordeliers, University Paris-Diderot, INSERM UMR_S1138, Equipe Physiopathologie Orale Moléculaire, Paris, France
| | - Claire Bardet
- EA 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School, University Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Muriel de La Dure-Molla
- INSERM UMR_S1163, Bases moléculaires et physiopathologiques des ostéochondrodysplasies, Institut Imagine, Necker, Paris, France.,AP-HP, Referral Center for Rare Buccal and Facial Dysmorphologies CRMR MAFACE, Hôpital Rothschild, Paris, France
| | - Luiz Claudio Castro
- Unit of Pediatric Endocrinology, University Hospital of Brasilia, Brasilia, Brazil
| | | | | | | | - Jean-Christophe Fricain
- CHU Bordeaux, Dental school, U1026 Tissue Bioengineering, University of Bordeaux/Inserm, Bordeaux, France
| | - Renaud de La Faille
- Department of Nephrology, Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Marie-Lucile Figueres
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, Université Paris Descartes, Sorbonne Paris Cité, UMR_S 1138, Centre de Recherche des Cordeliers, CNRS ERL_8228, Paris, France
| | - Rosa Vargas-Poussou
- AP-HP, Department of Genetics, Reference Center of Children and Adult Renal Hereditary Diseases (MARHEA), Hôpital European Georges Pompidou, Paris, France
| | - Pascal Houillier
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, Université Paris Descartes, Sorbonne Paris Cité, UMR_S 1138, Centre de Recherche des Cordeliers, CNRS ERL_8228, Paris, France.,AP-HP, Department of Genetics, Reference Center of Children and Adult Renal Hereditary Diseases (MARHEA), Hôpital European Georges Pompidou, Paris, France
| | - Catherine Chaussain
- EA 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School, University Paris Descartes, Sorbonne Paris Cité, Paris, France.,AP-HP, Department of Genetics, Reference Center of Children and Adult Renal Hereditary Diseases (MARHEA), Hôpital European Georges Pompidou, Paris, France
| | - Sylvie Babajko
- Centre de Recherche des Cordeliers, University Paris-Diderot, INSERM UMR_S1138, Equipe Physiopathologie Orale Moléculaire, Paris, France
| | - Ariane Berdal
- Centre de Recherche des Cordeliers, University Paris-Diderot, INSERM UMR_S1138, Equipe Physiopathologie Orale Moléculaire, Paris, France.,AP-HP, Referral Center for Rare Buccal and Facial Dysmorphologies CRMR MAFACE, Hôpital Rothschild, Paris, France
| | - Ana Carolina Acevedo
- Faculty of Health Sciences, Division of Dentistry, Oral Care Center for Inherited Diseases, University Hospital of Brasilia, University of Brasilia, Brasilia, Brazil.,Faculty of Health Sciences, Laboratory of Oral Histopathology, University of Brasilia, Brasilia, Brazil
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24
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Bardet C, Courson F, Wu Y, Khaddam M, Salmon B, Ribes S, Thumfart J, Yamaguti PM, Rochefort GY, Figueres ML, Breiderhoff T, Garcia-Castaño A, Vallée B, Le Denmat D, Baroukh B, Guilbert T, Schmitt A, Massé JM, Bazin D, Lorenz G, Morawietz M, Hou J, Carvalho-Lobato P, Manzanares MC, Fricain JC, Talmud D, Demontis R, Neves F, Zenaty D, Berdal A, Kiesow A, Petzold M, Menashi S, Linglart A, Acevedo AC, Vargas-Poussou R, Müller D, Houillier P, Chaussain C. Claudin-16 Deficiency Impairs Tight Junction Function in Ameloblasts, Leading to Abnormal Enamel Formation. J Bone Miner Res 2016; 31:498-513. [PMID: 26426912 DOI: 10.1002/jbmr.2726] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 09/28/2015] [Accepted: 09/29/2015] [Indexed: 12/26/2022]
Abstract
Claudin-16 protein (CLDN16) is a component of tight junctions (TJ) with a restrictive distribution so far demonstrated mainly in the kidney. Here, we demonstrate the expression of CLDN16 also in the tooth germ and show that claudin-16 gene (CLDN16) mutations result in amelogenesis imperfecta (AI) in the 5 studied patients with familial hypomagnesemia with hypercalciuria and nephrocalcinosis (FHHNC). To investigate the role of CLDN16 in tooth formation, we studied a murine model of FHHNC and showed that CLDN16 deficiency led to altered secretory ameloblast TJ structure, lowering of extracellular pH in the forming enamel matrix, and abnormal enamel matrix protein processing, resulting in an enamel phenotype closely resembling human AI. This study unravels an association of FHHNC owing to CLDN16 mutations with AI, which is directly related to the loss of function of CLDN16 during amelogenesis. Overall, this study indicates for the first time the importance of a TJ protein in tooth formation and underlines the need to establish a specific dental follow-up for these patients.
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Affiliation(s)
- Claire Bardet
- EA 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School Paris Descartes University, Sorbonne Paris Cité, France
| | - Frédéric Courson
- Department of Odontology, AP-HP, and Reference Center for Rare Diseases of the Metabolism of Calcium and Phosphorus, Nord Val de Seine Hospital, Bretonneau, France
| | - Yong Wu
- EA 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School Paris Descartes University, Sorbonne Paris Cité, France.,Department of Oral and Cranio-maxillofacial Science, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Mayssam Khaddam
- EA 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School Paris Descartes University, Sorbonne Paris Cité, France
| | - Benjamin Salmon
- EA 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School Paris Descartes University, Sorbonne Paris Cité, France.,Department of Odontology, AP-HP, and Reference Center for Rare Diseases of the Metabolism of Calcium and Phosphorus, Nord Val de Seine Hospital, Bretonneau, France
| | - Sandy Ribes
- EA 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School Paris Descartes University, Sorbonne Paris Cité, France
| | - Julia Thumfart
- Department of Pediatric Nephrology, Charité University School of Medicine, Berlin, Germany
| | - Paulo M Yamaguti
- Division of Dentistry, Oral Care Center for Inherited Diseases, University Hospital of Brasilia, Faculty of Health Sciences, University of Brasilia (UnB), Brasilia, Brazil
| | - Gael Y Rochefort
- EA 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School Paris Descartes University, Sorbonne Paris Cité, France
| | - Marie-Lucile Figueres
- INSERM UMRS 1138, Cordeliers Research Center, Paris-Diderot, Pierre et Marie Curie and Paris Descartes Universities, CNRS ERL 8228, Paris, France
| | - Tilman Breiderhoff
- Department of Pediatric Nephrology, Charité University School of Medicine, Berlin, Germany
| | - Alejandro Garcia-Castaño
- Department of Genetics, AP-HP, and Reference Center of Children and Adult Renal Hereditary Diseases (MARHEA), European Hospital Georges Pompidou, Paris, France
| | - Benoit Vallée
- Laboratory CRRET, Paris-Est University, CNRS, Créteil, France
| | - Dominique Le Denmat
- EA 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School Paris Descartes University, Sorbonne Paris Cité, France
| | - Brigitte Baroukh
- EA 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School Paris Descartes University, Sorbonne Paris Cité, France
| | - Thomas Guilbert
- Cochin Institute, Plate-Forme d'Imagerie Photonique, INSERM U1016, CNRS UMR8104, Paris Descartes University Sorbonne Paris Cité, Paris, France
| | - Alain Schmitt
- Cochin Institute, Transmission Electron Microscopy Platform, INSERM U1016, CNRS UMR8104, Paris Descartes University Sorbonne Paris Cité, Paris, France
| | - Jean-Marc Massé
- Cochin Institute, Transmission Electron Microscopy Platform, INSERM U1016, CNRS UMR8104, Paris Descartes University Sorbonne Paris Cité, Paris, France
| | - Dominique Bazin
- Laboratoire de Physique des Solides, CNRS, Paris Sud University, Orsay, and LCMCP-UPMC, Collège de France, Paris, France
| | - Georg Lorenz
- Fraunhofer Institute for Mechanics of Materials IWM, Halle, Germany
| | - Maria Morawietz
- Fraunhofer Institute for Mechanics of Materials IWM, Halle, Germany
| | - Jianghui Hou
- Division of Renal Diseases, Washington University School of Medicine, St. Louis, MO, USA
| | - Patricia Carvalho-Lobato
- Human Anatomy and Embryology, Health University of Barcelona Campus-Bellvitge, University of Barcelona, Barcelona, Spain
| | - Maria Cristina Manzanares
- Human Anatomy and Embryology, Health University of Barcelona Campus-Bellvitge, University of Barcelona, Barcelona, Spain
| | - Jean-Christophe Fricain
- CHU Bordeaux, Dental School, U1026 Tissue Bioengineering, University of Bordeaux/Inserm, Bordeaux, France
| | - Deborah Talmud
- Department of Pediatrics, Centre Hospitalier Régional (CHR) d'Orléans, Orleans, France
| | | | - Francisco Neves
- Laboratory of Molecular Pharmacology, Faculty of Health Sciences, University of Brasilia (UNB), Brasilia, Brazil
| | - Delphine Zenaty
- Department of Pediatric Endocrinology, AP-HP, Paris Diderot University, Robert Debré Hospital, Paris, France
| | - Ariane Berdal
- INSERM UMRS 1138, Cordeliers Research Center, Paris-Diderot, Pierre et Marie Curie and Paris Descartes Universities, CNRS ERL 8228, Paris, France
| | - Andreas Kiesow
- Fraunhofer Institute for Mechanics of Materials IWM, Halle, Germany
| | - Matthias Petzold
- Fraunhofer Institute for Mechanics of Materials IWM, Halle, Germany
| | - Suzanne Menashi
- Laboratory CRRET, Paris-Est University, CNRS, Créteil, France
| | - Agnes Linglart
- Department of Pediatric Endocrinology, AP-HP, Paris Sud University, School of Medicine, and Reference Center for Rare Diseases of the Metabolism of Calcium and Phosphorus, Paris, France
| | - Ana Carolina Acevedo
- Division of Dentistry, Oral Care Center for Inherited Diseases, University Hospital of Brasilia, Faculty of Health Sciences, University of Brasilia (UnB), Brasilia, Brazil
| | - Rosa Vargas-Poussou
- Department of Genetics, AP-HP, and Reference Center of Children and Adult Renal Hereditary Diseases (MARHEA), European Hospital Georges Pompidou, Paris, France
| | - Dominik Müller
- Department of Pediatric Nephrology, Charité University School of Medicine, Berlin, Germany
| | - Pascal Houillier
- INSERM UMRS 1138, Cordeliers Research Center, Paris-Diderot, Pierre et Marie Curie and Paris Descartes Universities, CNRS ERL 8228, Paris, France.,Department of Physiology, AP-HP, and Reference Center of Children and Adult Renal Hereditary Diseases (MARHEA), Georges Pompidou European Hospital, Paris, France
| | - Catherine Chaussain
- EA 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Dental School Paris Descartes University, Sorbonne Paris Cité, France.,Department of Odontology, AP-HP, and Reference Center for Rare Diseases of the Metabolism of Calcium and Phosphorus, Nord Val de Seine Hospital, Bretonneau, France
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25
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Hunter DJ, Bardet C, Mouraret S, Liu B, Singh G, Sadoine J, Dhamdhere G, Smith A, Tran XV, Joy A, Rooker S, Suzuki S, Vuorinen A, Miettinen S, Chaussain C, Helms JA. Wnt Acts as a Prosurvival Signal to Enhance Dentin Regeneration. J Bone Miner Res 2015; 30:1150-9. [PMID: 25556760 DOI: 10.1002/jbmr.2444] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 12/11/2014] [Accepted: 12/23/2014] [Indexed: 01/08/2023]
Abstract
Wnt proteins are lipid-modified, short-range signals that control stem cell self-renewal and tissue regeneration. We identified a population of Wnt responsive cells in the pulp cavity, characterized their function, and then created a pulp injury. The repair response was evaluated over time using molecular, cellular, and quantitative assays. We tested how healing was impacted by wound environments in which Wnt signaling was amplified. We found that a Wnt-amplified environment was associated with superior pulp healing. Although cell death was still rampant, the number of cells undergoing apoptosis was significantly reduced. This resulted in significantly better survival of injured pulp cells, and resulted in the formation of more tertiary dentin. We engineered a liposome-reconstituted form of WNT3A then tested whether this biomimetic compound could activate cells in the injured tooth pulp and stimulate dentin regeneration. Pulp cells responded to the elevated Wnt stimulus by differentiating into secretory odontoblasts. Thus, transiently amplifying the body's natural Wnt response resulted in improved pulp vitality. These data have direct clinical implications for treating dental caries, the most prevalent disease affecting mankind.
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Affiliation(s)
- Daniel J Hunter
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA
| | - Claire Bardet
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA.,EA 2496, Dental School, University Paris Descartes, Sorbonne Paris Cité, Montrouge, France
| | - Sylvain Mouraret
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA.,Department of Periodontology, Service of Odontology, Rothschild Hospital, Assistance Publique-Hôpitaux de Paris, Paris 7, Université Paris Diderot, Unité de Formation et de Recherche (UFR) of Odontology, Paris, France
| | - Bo Liu
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA
| | - Gurpreet Singh
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA
| | - Jérémy Sadoine
- EA 2496, Dental School, University Paris Descartes, Sorbonne Paris Cité, Montrouge, France
| | - Girija Dhamdhere
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA
| | - Andrew Smith
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA.,Department of Biological Sciences, San Jose State University, San Jose, CA, USA
| | - Xuan Vinh Tran
- EA 2496, Dental School, University Paris Descartes, Sorbonne Paris Cité, Montrouge, France
| | - Adrienne Joy
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA
| | - Scott Rooker
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA
| | - Shigeki Suzuki
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA.,Department of Dental Science for Health Promotion, Division of Cervico-Gnathostomatology Hiroshima, University Graduate School of Biomedical Sciences, Hiroshima, Japan
| | - Annukka Vuorinen
- BioMediTech, Adult Stem Cell Research, University of Tampere, Tampere, Finland.,Finnish Student Health Service, Tampere, Finland
| | - Susanna Miettinen
- BioMediTech, Adult Stem Cell Research, University of Tampere, Tampere, Finland.,Science Centre, University of Tampere, Tampere, Finland
| | - Catherine Chaussain
- EA 2496, Dental School, University Paris Descartes, Sorbonne Paris Cité, Montrouge, France
| | - Jill A Helms
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA
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26
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Opsahl-Vital S, Gaucher C, Bardet C, Courson F, Linglart A, Chaussain C. Les maladies pédiatriques à révélation dentaire. Arch Pediatr 2015; 22:151-2. [DOI: 10.1016/s0929-693x(15)30075-0] [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: 10/23/2022]
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27
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Mouraret S, Von Kaeppler E, Bardet C, Hunter DJ, Chaussain C, Bouchard P, Helms JA. The potential for vertical bone regeneration via maxillary periosteal elevation. J Clin Periodontol 2014; 41:1170-7. [PMID: 25229322 DOI: 10.1111/jcpe.12310] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/08/2014] [Indexed: 11/30/2022]
Abstract
BACKGROUND While many studies have been performed on the characteristics and regenerative capacity of long bone periosteum, the craniofacial periosteum remains poorly understood. AIM The aim of this study was to investigate the potential for a maxillary periosteum tunnelling procedure to induce vertical alveolar bone regeneration. MATERIALS AND METHODS We employed a murine injury model that activates skeletal stem cells in the periosteum without overtly damaging the underlying cortical bone, preserving the integrity of the long bone and maxilla, and avoiding the introduction of pathological motion at the injury site. Further, we introduced a collagen sponge to serve as a scaffold, providing the necessary space for vertical bone regeneration. RESULTS Periosteal elevation alone resulted in bone formation in the tibia and delayed bone resorption in the maxilla. With the presence of the collagen sponge, new bone formation occurred in the maxilla. CONCLUSIONS Periosteal response to injury varies with anatomical location, so conclusions from long bone studies should not be extrapolated for craniofacial applications. Murine maxillary periosteum has the osteogenic potential to induce vertical alveolar bone regeneration.
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Affiliation(s)
- Sylvain Mouraret
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA; Department of Periodontology, Service of Odontology, Rothschild Hospital, AP-HP, Paris 7 - Denis, Diderot University, U.F.R. of Odontology, Paris, France
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28
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Salmon B, Bardet C, Coyac BR, Baroukh B, Naji J, Rowe PS, Opsahl Vital S, Linglart A, Mckee MD, Chaussain C. Abnormal osteopontin and matrix extracellular phosphoglycoprotein localization, and odontoblast differentiation, in X-linked hypophosphatemic teeth. Connect Tissue Res 2014; 55 Suppl 1:79-82. [PMID: 25158186 DOI: 10.3109/03008207.2014.923864] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Mutations in phosphate-regulating gene (PHEX) lead to X-linked hypophosphatemic rickets (XLH), a genetic disease characterized by impaired mineralization in bones and teeth. In human XLH tooth dentin, calcospherites that would normally merge as part of the mineralization process are separated by unmineralized interglobular spaces where fragments of matrix proteins accumulate. Here, we immunolocalized osteopontin (OPN) in human XLH teeth, in a three-dimensional XLH human dental pulp stem cell-collagen scaffold culture model and in a rat tooth injury repair model treated with acidic serine- and aspartate-rich motif peptides (ASARM). In parallel, matrix extracellular phosphoglycoprotein (MEPE) immunolocalization and alkaline phosphatase (ALP) activity were assessed in XLH teeth. OPN was expressed by odontoblasts in the XLH models, and localized to the abnormal calcospherites of XLH tooth dentin. In addition, ALP activity and MEPE localization were abnormal in human XLH teeth, with MEPE showing an accumulation in the unmineralized interglobular spaces in dentin. Furthermore, XLH odontoblasts failed to form a well-polarized odontoblast layer. These data suggest that both MEPE and OPN are involved in impaired tooth mineralization associated with XLH, possibly through different effects on the mineralization process.
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Affiliation(s)
- B Salmon
- EA 2496, Faculty of Dentistry , Paris Descartes University , France
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29
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Lim WH, Liu B, Cheng D, Hunter DJ, Zhong Z, Ramos DM, Williams BO, Sharpe PT, Bardet C, Mah SJ, Helms JA. Wnt signaling regulates pulp volume and dentin thickness. J Bone Miner Res 2014; 29:892-901. [PMID: 23996396 PMCID: PMC4541795 DOI: 10.1002/jbmr.2088] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 08/12/2013] [Accepted: 08/27/2013] [Indexed: 12/18/2022]
Abstract
Odontoblasts, cementoblasts, ameloblasts, and osteoblasts all form mineralized tissues in the craniofacial complex, and all these cell types exhibit active Wnt signaling during postnatal life. We set out to understand the functions of this Wnt signaling, by evaluating the phenotypes of mice in which the essential Wnt chaperone protein, Wntless was eliminated. The deletion of Wls was restricted to cells expressing Osteocalcin (OCN), which in addition to osteoblasts includes odontoblasts, cementoblasts, and ameloblasts. Dentin, cementum, enamel, and bone all formed in OCN-Cre;Wls(fl/fl) mice but their homeostasis was dramatically affected. The most notable feature was a significant increase in dentin volume and density. We attribute this gain in dentin volume to a Wnt-mediated misregulation of Runx2. Normally, Wnt signaling stimulates Runx2, which in turn inhibits dentin sialoprotein (DSP); this inhibition must be relieved for odontoblasts to differentiate. In OCN-Cre;Wls(fl/fl) mice, Wnt pathway activation is reduced and Runx2 levels decline. The Runx2-mediated repression of DSP is relieved and odontoblast differentiation is accordingly enhanced. This study demonstrates the importance of Wnt signaling in the homeostasis of mineralized tissues of the craniofacial complex.
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Affiliation(s)
- Won Hee Lim
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA; Department of Orthodontics, School of Dentistry & Dental Research Institute, Seoul National University, Seoul, Korea
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30
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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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31
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Mouraret S, Hunter D, Bardet C, Brunski J, Bouchard P, Helms J. A pre-clinical murine model of oral implant osseointegration. Bone 2014; 58:177-84. [PMID: 23886841 PMCID: PMC4962868 DOI: 10.1016/j.bone.2013.07.021] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Revised: 05/31/2013] [Accepted: 07/10/2013] [Indexed: 10/26/2022]
Abstract
Many of our assumptions concerning oral implant osseointegration are extrapolated from experimental models studying skeletal tissue repair in long bones. This disconnect between clinical practice and experimental research hampers our understanding of bone formation around oral implants and how this process can be improved. We postulated that oral implant osseointegration would be fundamentally equivalent to implant osseointegration elsewhere in the body. Mice underwent implant placement in the edentulous ridge anterior to the first molar and peri-implant tissues were evaluated at various timepoints after surgery. Our hypothesis was disproven; oral implant osseointegration is substantially different from osseointegration in long bones. For example, in the maxilla peri-implant pre-osteoblasts are derived from cranial neural crest whereas in the tibia peri-implant osteoblasts are derived from mesoderm. In the maxilla, new osteoid arises from periostea of the maxillary bone but in the tibia the new osteoid arises from the marrow space. Cellular and molecular analyses indicate that osteoblast activity and mineralization proceeds from the surfaces of the native bone and osteoclastic activity is responsible for extensive remodeling of the new peri-implant bone. In addition to histologic features of implant osseointegration, molecular and cellular assays conducted in a murine model provide new insights into the sequelae of implant placement and the process by which bone is generated around implants.
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Affiliation(s)
- S. Mouraret
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA 94305, USA
- Department of Periodontology, Service of Odontology, Rothschild Hospital, AP-HP, Paris 7 Denis, Diderot University, U.F.R. of Odontology, Paris, France
| | - D.J. Hunter
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA 94305, USA
| | - C. Bardet
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA 94305, USA
- Dental School University Paris Descartes PRES Sorbonne Paris Cité, EA 2496 Montrouge, France
| | - J.B. Brunski
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA 94305, USA
| | - P. Bouchard
- Department of Periodontology, Service of Odontology, Rothschild Hospital, AP-HP, Paris 7 Denis, Diderot University, U.F.R. of Odontology, Paris, France
| | - J.A. Helms
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA 94305, USA
- Corresponding author. Fax: +1 650 736 4374. (J.A. Helms)
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Mouraret S, Hunter DJ, Bardet C, Popelut A, Brunski JB, Chaussain C, Bouchard P, Helms JA. Improving oral implant osseointegration in a murine model via Wnt signal amplification. J Clin Periodontol 2013; 41:172-80. [PMID: 24164629 DOI: 10.1111/jcpe.12187] [Citation(s) in RCA: 14] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/29/2013] [Indexed: 11/28/2022]
Abstract
AIM To determine the key biological events occurring during implant failure and then we use this knowledge to develop new biology-based strategies that improve osseointegration. MATERIALS AND METHODS Wild-type and Axin2(LacZ/LacZ) adult male mice underwent oral implant placement, with and without primary stability. Peri-implant tissues were evaluated using histology, alkaline phosphatase (ALP) activity, tartrate resistant acid phosphatase (TRAP) activity and TUNEL staining. In addition, mineralization sites, collagenous matrix organization and the expression of bone markers in the peri-implant tissues were assessed. RESULTS Maxillary implants lacking primary stability show histological evidence of persistent fibrous encapsulation and mobility, which recapitulates the clinical problems of implant failure. Despite histological and molecular evidence of fibrous encapsulation, osteoblasts in the gap interface exhibit robust ALP activity. This mineralization activity is counteracted by osteoclast activity that resorbs any new bony matrix and consequently, the fibrous encapsulation remains. Using a genetic mouse model, we show that implants lacking primary stability undergo osseointegration, provided that Wnt signalling is amplified. CONCLUSIONS In a mouse model of oral implant failure caused by a lack of primary stability, we find evidence of active mineralization. This mineralization, however, is outpaced by robust bone resorption, which culminates in persistent fibrous encapsulation of the implant. Fibrous encapsulation can be prevented and osseointegration assured if Wnt signalling is elevated at the time of implant placement.
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Affiliation(s)
- Sylvain Mouraret
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA; Department of Periodontology, Service of Odontology, Rothschild Hospital, AP-HP, Paris 7 - Denis, Diderot University, U.F.R. of Odontology, Paris, France
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Salmon B, Bardet C, Khaddam M, Naji J, Coyac BR, Baroukh B, Letourneur F, Lesieur J, Decup F, Le Denmat D, Nicoletti A, Poliard A, Rowe PS, Huet E, Vital SO, Linglart A, McKee MD, Chaussain C. MEPE-derived ASARM peptide inhibits odontogenic differentiation of dental pulp stem cells and impairs mineralization in tooth models of X-linked hypophosphatemia. PLoS One 2013; 8:e56749. [PMID: 23451077 PMCID: PMC3579870 DOI: 10.1371/journal.pone.0056749] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Accepted: 01/13/2013] [Indexed: 01/09/2023] Open
Abstract
Mutations in PHEX (phosphate-regulating gene with homologies to endopeptidases on the X-chromosome) cause X-linked familial hypophosphatemic rickets (XLH), a disorder having severe bone and tooth dentin mineralization defects. The absence of functional PHEX leads to abnormal accumulation of ASARM (acidic serine- and aspartate-rich motif) peptide − a substrate for PHEX and a strong inhibitor of mineralization − derived from MEPE (matrix extracellular phosphoglycoprotein) and other matrix proteins. MEPE-derived ASARM peptide accumulates in tooth dentin of XLH patients where it may impair dentinogenesis. Here, we investigated the effects of ASARM peptides in vitro and in vivo on odontoblast differentiation and matrix mineralization. Dental pulp stem cells from human exfoliated deciduous teeth (SHEDs) were seeded into a 3D collagen scaffold, and induced towards odontogenic differentiation. Cultures were treated with synthetic ASARM peptides (phosphorylated and nonphosphorylated) derived from the human MEPE sequence. Phosphorylated ASARM peptide inhibited SHED differentiation in vitro, with no mineralized nodule formation, decreased odontoblast marker expression, and upregulated MEPE expression. Phosphorylated ASARM peptide implanted in a rat molar pulp injury model impaired reparative dentin formation and mineralization, with increased MEPE immunohistochemical staining. In conclusion, using complementary models to study tooth dentin defects observed in XLH, we demonstrate that the MEPE-derived ASARM peptide inhibits both odontogenic differentiation and matrix mineralization, while increasing MEPE expression. These results contribute to a partial mechanistic explanation of XLH pathogenesis: direct inhibition of mineralization by ASARM peptide leads to the mineralization defects in XLH teeth. This process appears to be positively reinforced by the increased MEPE expression induced by ASARM. The MEPE-ASARM system can therefore be considered as a potential therapeutic target.
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Affiliation(s)
- Benjamin Salmon
- EA 2496, Pathologies, Imaging and Biotherapies of the Tooth, UFR Odontologie, University Paris Descartes PRES Sorbonne Paris Cité, Montrouge, France
- AP-HP Odontology Department Bretonneau – Louis Mourier, Hôpitaux Universitaires Paris Nord Val de Seine, Paris France
- Centre de Référence des Maladies Rares du Métabolisme du Phosphore et du Calcium, AP-HP, Kremlin Bicêtre, France
| | - Claire Bardet
- EA 2496, Pathologies, Imaging and Biotherapies of the Tooth, UFR Odontologie, University Paris Descartes PRES Sorbonne Paris Cité, Montrouge, France
| | - Mayssam Khaddam
- EA 2496, Pathologies, Imaging and Biotherapies of the Tooth, UFR Odontologie, University Paris Descartes PRES Sorbonne Paris Cité, Montrouge, France
| | - Jiar Naji
- EA 2496, Pathologies, Imaging and Biotherapies of the Tooth, UFR Odontologie, University Paris Descartes PRES Sorbonne Paris Cité, Montrouge, France
| | - Benjamin R. Coyac
- EA 2496, Pathologies, Imaging and Biotherapies of the Tooth, UFR Odontologie, University Paris Descartes PRES Sorbonne Paris Cité, Montrouge, France
- AP-HP Odontology Department Bretonneau – Louis Mourier, Hôpitaux Universitaires Paris Nord Val de Seine, Paris France
- Faculty of Dentistry, and Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada
| | - Brigitte Baroukh
- EA 2496, Pathologies, Imaging and Biotherapies of the Tooth, UFR Odontologie, University Paris Descartes PRES Sorbonne Paris Cité, Montrouge, France
| | - Franck Letourneur
- Institut Cochin, University Paris Descartes PRES Sorbonne Paris Cité, Paris, France
| | - Julie Lesieur
- EA 2496, Pathologies, Imaging and Biotherapies of the Tooth, UFR Odontologie, University Paris Descartes PRES Sorbonne Paris Cité, Montrouge, France
| | - Franck Decup
- EA 2496, Pathologies, Imaging and Biotherapies of the Tooth, UFR Odontologie, University Paris Descartes PRES Sorbonne Paris Cité, Montrouge, France
- AP-HP Odontology Department Charles Foix, Ivry Sur Seine, France
| | - Dominique Le Denmat
- EA 2496, Pathologies, Imaging and Biotherapies of the Tooth, UFR Odontologie, University Paris Descartes PRES Sorbonne Paris Cité, Montrouge, France
| | - Antonino Nicoletti
- Inserm UMRS698, Paris, France
- Denis Diderot University, UMRS698, Paris, France
| | - Anne Poliard
- EA 2496, Pathologies, Imaging and Biotherapies of the Tooth, UFR Odontologie, University Paris Descartes PRES Sorbonne Paris Cité, Montrouge, France
| | - Peter S. Rowe
- The Kidney Institute, University of Kansas Medical Center, Kansas City, Kansas, United States of America
| | - Eric Huet
- Université Paris-Est, Laboratoire CRRET, CNRS, Créteil, France
| | - Sibylle Opsahl Vital
- EA 2496, Pathologies, Imaging and Biotherapies of the Tooth, UFR Odontologie, University Paris Descartes PRES Sorbonne Paris Cité, Montrouge, France
- AP-HP Odontology Department Bretonneau – Louis Mourier, Hôpitaux Universitaires Paris Nord Val de Seine, Paris France
- Centre de Référence des Maladies Rares du Métabolisme du Phosphore et du Calcium, AP-HP, Kremlin Bicêtre, France
| | - Agnès Linglart
- Centre de Référence des Maladies Rares du Métabolisme du Phosphore et du Calcium, AP-HP, Kremlin Bicêtre, France
- APHP Endocrinology and Diabetology for Children, Bicêtre Paris Sud Hospital, Kremlin Bicêtre, France
- Université Paris-Sud, Kremlin Bicêtre, France
| | - Marc D. McKee
- Faculty of Dentistry, and Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada
| | - Catherine Chaussain
- EA 2496, Pathologies, Imaging and Biotherapies of the Tooth, UFR Odontologie, University Paris Descartes PRES Sorbonne Paris Cité, Montrouge, France
- AP-HP Odontology Department Bretonneau – Louis Mourier, Hôpitaux Universitaires Paris Nord Val de Seine, Paris France
- Centre de Référence des Maladies Rares du Métabolisme du Phosphore et du Calcium, AP-HP, Kremlin Bicêtre, France
- * E-mail:
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Vital SO, Gaucher C, Bardet C, Rowe P, George A, Linglart A, Chaussain C. Tooth dentin defects reflect genetic disorders affecting bone mineralization. Bone 2012; 50:989-97. [PMID: 22296718 PMCID: PMC3345892 DOI: 10.1016/j.bone.2012.01.010] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Revised: 01/06/2012] [Accepted: 01/14/2012] [Indexed: 01/27/2023]
Abstract
Several genetic disorders affecting bone mineralization may manifest during dentin mineralization. Dentin and bone are similar in several aspects, especially pertaining to the composition of the extracellular matrix (ECM) which is secreted by well-differentiated odontoblasts and osteoblasts, respectively. However, unlike bone, dentin is not remodelled and is not involved in the regulation of calcium and phosphate metabolism. In contrast to bone, teeth are accessible tissues with the shedding of deciduous teeth and the extractions of premolars and third molars for orthodontic treatment. The feasibility of obtaining dentin makes this a good model to study biomineralization in physiological and pathological conditions. In this review, we focus on two genetic diseases that disrupt both bone and dentin mineralization. Hypophosphatemic rickets is related to abnormal secretory proteins involved in the ECM organization of both bone and dentin, as well as in the calcium and phosphate metabolism. Osteogenesis imperfecta affects proteins involved in the local organization of the ECM. In addition, dentin examination permits evaluation of the effects of the systemic treatment prescribed to hypophosphatemic patients during growth. In conclusion, dentin constitutes a valuable tool for better understanding of the pathological processes affecting biomineralization.
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Affiliation(s)
- S. Opsahl Vital
- Dental School University Paris Descartes PRES Sorbonne Paris Cité, EA 2496, Montrouge, F-92120, France
- AP-HP, Odontology Department, Hôpitaux Universitaires Paris Nord Val de Seine (Bretonneau- Louis Mourier), F-75018, France
- Centre de référence des maladies rares du métabolisme du phosphore et du calcium, Kremlin Bicêtre, AP-HP, F-94275, France
| | - C. Gaucher
- Dental School University Paris Descartes PRES Sorbonne Paris Cité, EA 2496, Montrouge, F-92120, France
- AP-HP, Odontology Department, Hôpital Albert Chennevier, Créteil, F-94010, France
- Centre de référence des maladies rares du métabolisme du phosphore et du calcium, Kremlin Bicêtre, AP-HP, F-94275, France
| | - C. Bardet
- Dental School University Paris Descartes PRES Sorbonne Paris Cité, EA 2496, Montrouge, F-92120, France
| | - P.S. Rowe
- The Kidney Institute, University of Kansas Medical Center, Kansas City, KS, USA
| | - A. George
- Department of Oral Biology, University of Illinois in Chicago, Illinois 60612, USA
| | - A. Linglart
- Inserm, U986 Hôpital St Vincent de Paul AP-HP, Paris, F-75014, France
- Centre de référence des maladies rares du métabolisme du phosphore et du calcium, Kremlin Bicêtre, AP-HP, F-94275, France
| | - C. Chaussain
- Dental School University Paris Descartes PRES Sorbonne Paris Cité, EA 2496, Montrouge, F-92120, France
- AP-HP, Odontology Department, Hôpitaux Universitaires Paris Nord Val de Seine (Bretonneau- Louis Mourier), F-75018, France
- Centre de référence des maladies rares du métabolisme du phosphore et du calcium, Kremlin Bicêtre, AP-HP, F-94275, France
- Corresponding author at: Dental school University Paris Descartes PRES Sorbonne Paris Cité, EA 2496, Montrouge, France 2120. Fax: +33 158076724. (C. Chaussain)
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Bardet C, Vincent C, Lajarille MC, Jaffredo T, Sire JY. OC-116, the chicken ortholog of mammalian MEPE found in eggshell, is also expressed in bone cells. J Exp Zool B Mol Dev Evol 2011; 314:653-62. [PMID: 20665709 DOI: 10.1002/jez.b.21366] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In chicken, ovocleidin 116 (OC-116) is found in the eggshell matrix and its encoding gene, OC-116, is expressed in uterine cells. In mammals, its orthologue MEPE encodes the matrix extracellular phosphoglycoprotein (MEPE), which has been shown to be involved in bone mineralization. Using RT-PCR and in situ hybridization on sections, we have checked whether OC-116 was also expressed in osteoblasts and osteocytes during bone development and mineralization in chicken embryos. We monitored OC-116 expression in the tibia and mandible of a growth series of chicken embryos from E3 to E19. Transcripts were identified in the osteoblasts as early as E5 in the tibia and E7 in the mandible, before matrix mineralization, then from these stages onwards in both the osteoblasts lining the mineralized bone matrix and the osteocytes. Therefore, early in chicken ontogeny and as soon as osteogenesis begins, OC-116 is involved. Its function, which remains still unknown, is maintained during further bone growth and mineralization, and later in adult, in which it is recruited for eggshell formation. We hypothesize that the ancestral OC-116/MEPE in a stem amniote was involved in these two functions and that the loss of eggshell in the mammalian lineage has probably favored the recruitment of some MEPE domains toward new functions in osteogenesis and mineralization, and in phosphatemia regulation.
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Affiliation(s)
- Claire Bardet
- Université Pierre et Marie Curie, Systématique-Adaptation-Evolution, 7 quai Saint-Bernard, Paris, France
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Bardet C, Delgado S, Sire JY. MEPE evolution in mammals reveals regions and residues of prime functional importance. Cell Mol Life Sci 2009; 67:305-20. [PMID: 19924383 DOI: 10.1007/s00018-009-0185-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2009] [Revised: 10/13/2009] [Accepted: 10/14/2009] [Indexed: 01/17/2023]
Abstract
In mammals, the matrix extracellular phosphoglycoprotein (MEPE) is known to activate osteogenesis and mineralization via a particular region called dentonin, and to inhibit mineralization via its ASARM (acidic serine-aspartate rich MEPE-associated motif) peptide that also plays a role in phosphatemia regulation. In order to understand MEPE evolution in mammals, and particularly that of its functional regions, we conducted an evolutionary analysis based on the study of selective pressures. Using 37 mammalian sequences we: (1) confirmed the presence of an additional coding exon in most placentals; (2) highlighted several conserved residues and regions that could have important functions; (3) found that dentonin function was recruited in a placental ancestor; and (4) revealed that ASARM function was present earlier, pushing the recruitment of MEPE deep into amniote origins. Our data indicate that MEPE was involved in various functions (bone and eggshell mineralization) prior to acquiring those currently known in placental mammals.
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Affiliation(s)
- Claire Bardet
- UMR 7138, Equipe Evolution & Développement du Squelette Université Paris 6, Paris, France
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Dos Santos S, Bardet C, Bertrand S, Escriva H, Habert D, Querat B. Distinct expression patterns of glycoprotein hormone-alpha2 and -beta5 in a basal chordate suggest independent developmental functions. Endocrinology 2009; 150:3815-22. [PMID: 19264871 DOI: 10.1210/en.2008-1743] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The vertebrate glycoprotein hormones (GpHs), gonadotropins and thyrotropin, are heterodimers composed of a common alpha- and specific beta-subunit. The recombinant heterodimer of two additional, structurally related proteins identified in vertebrate and protostome genomes, the glycoproteins-alpha2 (GPA2) and-beta5 (GPB5), was shown to activate the thyrotropin receptor and was therefore named thyrostimulin. However, differences in tissue distribution and expression levels of these proteins suggested that they might act as nonassociated factors, prompting further investigation on these proteins. In this study we show that GPA2 and GPB5 appeared with the emergence of bilateria and were maintained in most groups. These genes are tightly associated at the genomic level, an association, however, lost in tetrapods. Our structural and genomic environment comparison reinforces the hypothesis of their phylogenetic relationships with GpH-alpha and -beta. In contrast, the glycosylation status of GPA2 and GPB5 is highly variable further questioning heterodimer secretory efficiency and activity. As a first step toward understanding their function, we investigated the spatiotemporal expression of GPA2 and GPB5 genes at different developmental stages in a basal chordate, the amphioxus. Expression of GPB5 was essentially ubiquitous with an anteroposterior gradient in embryos. GPA2 embryonic and larvae expression was restricted to specific areas and, interestingly, partially overlapped that of a GpH receptor-related gene. In conclusion, we speculate that GPA2 and GPB5 have nondispensable and coordinated functions related to a novelty appeared with bilateria. These proteins would be active during embryonic development in a manner that does not require their heterodimerization.
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Affiliation(s)
- Sandra Dos Santos
- Centre National de la Recherche Scientifique Unité Mixte de Recherche 5166, Muséum National d'Histoire Naturelle Unité Scientifique du Muséum 501, Régulation, Développement et Diversité Moléculaire, F75231 Paris cedex 5, France
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Manevski A, Bertoni G, Bardet C, Tremousaygue D, Lescure B. In synergy with various cis-acting elements, plant insterstitial telomere motifs regulate gene expression in Arabidopsis root meristems. FEBS Lett 2000; 483:43-6. [PMID: 11033353 DOI: 10.1016/s0014-5793(00)02056-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The telo-box, an interstitial telomere motif, was shown to regulate gene expression in root meristems, in synergy with a cis-acting element involved in the activation of expression of plant eEF1A genes, encoding the translation elongation factor EF1A, and of several ribosomal protein genes. We demonstrate here that the telo-box is also required for transcription activation by two other cis elements present within the promoter of genes encoding the acidic ribosomal protein rp40 and the proliferating cell nuclear antigen respectively. The control of gene expression by telo-boxes during cell cycle progression in Arabidopsis root meristems is discussed. A parallel is drawn with the function of telomeric sequences in Saccharomyces cerevisiae.
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Affiliation(s)
- A Manevski
- Laboratoire de Biologie Moléculaire des Relations Plantes-Microorganismes, CNRS-INRA UMR 215, P.O. Box 27, 31326, Castanet-Tolosan, France
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Tremousaygue D, Manevski A, Bardet C, Lescure N, Lescure B. Plant interstitial telomere motifs participate in the control of gene expression in root meristems. Plant J 1999; 20:553-61. [PMID: 10652127 DOI: 10.1046/j.1365-313x.1999.00627.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The promoters of Arabidopsis eEF1A genes contain a telomere motif, the telo-box, associated with an activating sequence, the tef-box. Database searches indicated the presence of telo-boxes in the 5' region of numerous genes encoding components of the translational apparatus. By using several promoter constructs we demonstrate that the telo-box is required for the expression of a beta-glucoronidase gene in root primordia of transgenic Arabidopsis. This effect was observed when a telo-box was inserted upstream or downstream from the transcription initiation site, and occurred in synergy with the tef-box. These results clearly indicate that interstitial telomere motifs in plants are involved in control of gene expression. South-western screening of a lambdaZAP library with a double-stranded Arabidopsis telomere motif resulted in characterization of a protein related to the conserved animal protein Puralpha. The possibility of a regulation process similar to that achieved by the Rap1p in Saccharomyces cerevisiae is discussed.
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Affiliation(s)
- D Tremousaygue
- Laboratoire de Biologie Moléculaire des Relations Plantes-Microorganismes, CNRS-INRA, BP 27, 31326 Castanet-Tolosan, France
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Manevski A, Bardet C, Tremousaygue D, Lescure B. Characterization and properties of heteromeric plant protein complexes that interact with tef cis-acting elements in both RNA polymerase II-dependent promoters and rDNA spacer sequences. Mol Gen Genet 1999; 261:892-900. [PMID: 10485279 DOI: 10.1007/s004380051036] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The tef box, a cis-acting element identified in promoters of several plant genes encoding components of the translation apparatus, is involved in the activation of gene expression in cycling cells. In vitro, this element mediates the formation of two protein complexes called C1 and C2. A tef-like box is also found within the intergenic transcribed spacer of several plant rRNA genes. In radish this sequence has already been described as a protein-binding site putatively involved in the regulation of rDNA expression and is sufficient for formation of C1 complexes. By using mutated tef boxes, we show that tef-dependent activation of transcription is correlated with formation of both C1 and C2 complexes in a context-dependent manner. In transient expression experiments, the activation of a minimal promoter-GUS gene fusion is associated with the formation of C2 complexes. In contrast, the ability to form C1 complexes appears to allow activation of reporter gene expression in root meristems of transgenic Arabidopsis. SDS-PAGE analysis of purified protein fractions containing either the C1 or the C2 activity indicates a complex heteromeric structure for these potential regulators. Thus, the tef box seems to be a central component of the regulation of gene transcription in distinct and overlapping developmental programs, and could be involved in co-regulation of transcription by RNA polymerases I and II.
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Affiliation(s)
- A Manevski
- Laboratoire de Biologie Moléculaire des Relations Plantes-Microorganismes, CNRS-INRA, Castanet-Tolosan, France
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Tremousaygue D, Bardet C, Dabos P, Regad F, Pelese F, Nazer R, Gander E, Lescure B. Genome DNA sequencing around the EF-1 alpha multigene locus of Arabidopsis thaliana indicates a high gene density and a shuffling of noncoding regions. Genome Res 1997; 7:198-209. [PMID: 9074924 DOI: 10.1101/gr.7.3.198] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
In Arabidopsis thaliana, EF-1 alpha proteins are encoded by a multigene family of four members. Three of them are clustered at the same locus, which was positioned 24 cM from the top of chromosome 1. A region of DNA spanning 63 kb around these locus was sequenced and analyzed. One main characteristic of the locus is the mosaic organization of both genes and intergenic regions. Fourteen genes were identified, among which only four were already described, and other unidentified are most likely present. Functionally diverse genes are found at close intervals. Exon and intron distribution is highly variable at this locus, one gene being split into at least 20 introns. Several duplications were found within the sequenced segment both in coding and noncoding regions, including two gene families. Moreover, a sequence corresponding to the 5' noncoding region of the EF-1 alpha genes and harboring a 5' intervening sequence is duplicated and found upstream of several genes, suggesting that noncoding regions can be shuffled during evolution.
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Affiliation(s)
- D Tremousaygue
- Laboratoire de Biologie Moleculaire des relations Plantes-Microorganismes, Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA), Castanet Tolosan, France.
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Cooke R, Raynal M, Laudié M, Grellet F, Delseny M, Morris PC, Guerrier D, Giraudat J, Quigley F, Clabault G, Li YF, Mache R, Krivitzky M, Gy IJ, Kreis M, Lecharny A, Parmentier Y, Marbach J, Fleck J, Clément B, Philipps G, Hervé C, Bardet C, Tremousaygue D, Höfte H. Further progress towards a catalogue of all Arabidopsis genes: analysis of a set of 5000 non-redundant ESTs. Plant J 1996; 9:101-24. [PMID: 8580968 DOI: 10.1046/j.1365-313x.1996.09010101.x] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Nearly 7000 Arabidopsis thaliana-expressed sequence tags (ESTs) from 10 cDNA libraries have been sequenced, of which almost 5000 non-redundant tags have been submitted to the EMBL data bank. The quality of the cDNA libraries used is analysed. Similarity searches in international protein data banks have allowed the detection of significant similarities to a wide range of proteins from many organisms. Alignment with ESTs from the rice systematic sequencing project has allowed the detection of amino acid motifs which are conserved between the two organisms, thus identifying tags to genes encoding highly conserved proteins. These genes are candidates for a common framework in genome mapping projects in different plants.
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Affiliation(s)
- R Cooke
- Laboratoire de Physiologie et Biologie Moléculaires Végétal es, URA565 du CNRS, Université de Perpignan, France.
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Affiliation(s)
- M Axelos
- Laboratoire de Biologie Moléculaire des Relations Plantes-Microorganismes, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Centre d'Auzeville, Castanet-Tolosan, France
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Curie C, Axelos M, Bardet C, Atanassova R, Chaubet N, Lescure B. Modular organization and development activity of an Arabidopsis thaliana EF-1 alpha gene promoter. Mol Gen Genet 1993; 238:428-36. [PMID: 8492811 DOI: 10.1007/bf00292002] [Citation(s) in RCA: 74] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The activity of the Arabidopsis thalana A1 EF-1 alpha gene promoter was analyzed in transgenic Arabidopsis plants. The 5' upstream sequence of the A1 gene and several promoter deletions were fused to the beta-glucuronidase (GUS) coding region. Promoter activity was monitored by quantitative and histochemical assays of GUS activity. The results show that the A1 promoter exhibits a modular organization. Sequences both upstream and downstream relative to the transcription initiation site are involved in quantitative and tissue-specific expression during vegetative growth. One upstream element may be involved in the activation of expression in meristematic tissues; the downstream region, corresponding to an intron within the 5' non-coding region (5'IVS), is important for expression in roots; both upstream and downstream sequences are required for expression in leaves, suggesting combinatorial properties of EF-1 alpha cis-regulatory elements. This notion of specific combinatorial regulation is reinforced by the results of transient expression experiments in transfected Arabidopsis protoplasts. The deletion of the 5'IVS has much more effect on expression when the promoter activity is under the control of A1 EF-1 alpha upstream sequences than when these upstream sequences were replaced by the 35S enhancer. Similarly, a synthetic oligonucleotide corresponding to an A1 EF-1 alpha upstream cis-acting element (the TEF1 box), is able to restore partially the original activity when fused to a TEF1-less EF1-alpha promoter but has no significant effect when fused to an enhancer-less 35S promoter.
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Affiliation(s)
- C Curie
- Laboratoire de Biologie Moléculaire des Relations Plantes-Microorganismes, CNRS-INRA, Castanet-Tolosan, France
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Abstract
A cDNA clone encoding a small GTP-binding protein, the ADP-ribosylation factor (ARF) was isolated from a cDNA library of Arabidopsis thaliana cultured cells. The predicted amino acid sequence was highly homologous to the known yeast, bovine and human ARF sequences. Southern analysis of Arabidopsis genomic DNA suggested the existence of at least two copies of ARF genes. The level of ARF mRNA was found to be nearly constant during all cell growth stages in suspension cultures.
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Affiliation(s)
- F Regad
- Laboratoire de Biologie Moléculaire des Relations Plantes-Microorganismes, Centre INRA d'Auzeville, Castanet-Tolosan, France
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Curie C, Liboz T, Bardet C, Gander E, Médale C, Axelos M, Lescure B. Cis and trans-acting elements involved in the activation of Arabidopsis thaliana A1 gene encoding the translation elongation factor EF-1 alpha. Nucleic Acids Res 1991; 19:1305-10. [PMID: 1840652 PMCID: PMC333858 DOI: 10.1093/nar/19.6.1305] [Citation(s) in RCA: 60] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
In A. thaliana the translation elongation factor EF-1 alpha is encoded by a small multigenic family of four members (A1-A4). The A1 gene promoter has been dissected and examined in a transient expression system using the GUS reporter gene. Deletion analysis has shown that several elements are involved in the activation process. One cis-acting domain, the TEF 1 box, has been accurately mapped 100 bp upstream of the transcription initiation site. This domain is the target for trans-acting factors identified in nuclear extracts prepared from A. thaliana. Homologies are found between the TEF 1 box and sequences present at the same location within the A2, A3 and A4 promoters. This observation, together with those obtained from gel retardation assays performed using DNA fragments from the A4 promoter, suggest that the activation process mediated by the TEF 1 element is conserved among the A. thaliana EF-1 alpha genes. Analysis of nearly full length cDNA clones has shown that in addition to a single intron located within the coding region, the A1 gene contains a second intron located within the 5' non coding region. Such an intron is also present within the A2, A3 and A4 genes. This 5' intervening sequence appears to be essential to obtain a maximum GUS activity driven by the A1 gene promoter.
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Affiliation(s)
- C Curie
- Laboratoire de Biologie Moléculaire des Relations Plantes-Microorganismes, CNRS-INRA, Castanet Tolosan, France
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Liboz T, Bardet C, Le Van Thai A, Axelos M, Lescure B. The four members of the gene family encoding the Arabidopsis thaliana translation elongation factor EF-1 alpha are actively transcribed. Plant Mol Biol 1990; 14:107-10. [PMID: 2101309 DOI: 10.1007/bf00015660] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Affiliation(s)
- T Liboz
- Laboratoire de Biologie Moléculaire des Relations Plantes-Microorganismes, CNRS-INRA, BP 27, Castanet-Tolosan, France
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Axelos M, Bardet C, Liboz T, Le Van Thai A, Curie C, Lescure B. The gene family encoding the Arabidopsis thaliana translation elongation factor EF-1 alpha: molecular cloning, characterization and expression. Mol Gen Genet 1989; 219:106-12. [PMID: 2615757 DOI: 10.1007/bf00261164] [Citation(s) in RCA: 97] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The gene family encoding the Arabidopsis thaliana translation elongation factor (EF-1 alpha) was analysed. This family contains four genes (A1-A4) organized in a similar manner in different varieties of Arabidopsis. Based upon both their physical separation and a comparison of their sequences, it is suggested that the A4 gene and the A1, A2, and A3 genes constitute two distinct subfamilies within the genome. By introducing chimaeric gene constructs into Arabidopsis cells, we showed that the A1 gene promoter mediates a transient expression about twofold higher than that obtained using the CaMV 35 S promoter. This expression depends on a 348 bp DNA fragment extending from -982 to -634 bp upstream of the initiation codon. This element contains a characteristic telomeric sequence (AACCCTAA) which is also found in the promoters of the A2 and A4 genes as well as in the promoters of the Drosophila EF-1 alpha F1 gene and of several highly expressed plant genes.
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Affiliation(s)
- M Axelos
- Laboratoire des Relations Plantes-Microorganismes, CNRS-INRA, Castanet-Tolosan, France
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Gautronneau Y, Godard D, Le Pape Y, Sebillote M, Bardet C, Bellon S, Hocde. Une nouvelle approche de l'agriculture biologique. ACTA ACUST UNITED AC 1981. [DOI: 10.3406/ecoru.1981.4391] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Pech JC, Bardet C, Fallot J. [Extraction and separation by electrophoresis of pear Passe-Crassane pulp soluble proteins]. C R Acad Hebd Seances Acad Sci D 1970; 270:1171-3. [PMID: 4985240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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