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Ganapathy A, Narayanan K, Chen Y, Villani C, George A. Dentin matrix protein 1 and HUVEC-ECM scaffold promote the differentiation of human dental pulp stem cells into endothelial lineage: implications in regenerative medicine. Front Physiol 2024; 15:1429247. [PMID: 39040080 PMCID: PMC11260688 DOI: 10.3389/fphys.2024.1429247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Accepted: 06/17/2024] [Indexed: 07/24/2024] Open
Abstract
Reprograming of the dental pulp somatic cells to endothelial cells is an attractive strategy for generation of new blood vessels. For tissue regeneration, vascularization of engineered constructs is crucial to improve repair mechanisms. In this study, we show that dentin matrix protein 1 (DMP1) and HUVEC-ECM scaffold enhances the differentiation potential of dental pulp stem cells (DPSCs) to an endothelial phenotype. Our results show that the differentiated DPSCs expressed endothelial markers CD31 and VE-Cadherin (CD144) at 7 and 14 days. Expression of CD31 and VE-Cadherin (CD144) were also confirmed by immunofluorescence. Furthermore, flow cytometry analysis revealed a steady increase in CD31 and VE-Cadherin (CD144) positive cells with DMP1 treatment when compared with control. In addition, integrins specific for endothelial cells were highly expressed during the differentiation process. The endothelial cell signature of differentiated DPSCs were additionally characterized for key endothelial cell markers using gene expression by RT-PCR, Western blotting, immunostaining, and RNA-seq analysis. Furthermore, the angiogenic phenotype was confirmed by tubule and capillary sprout formation. Overall, stimulation of DPSCs by DMP1 and use of HUVEC-ECM scaffold promoted their differentiation into phenotypically, transcriptionally, and functionally differentiated bonafide endothelial cells. This study is novel, physiologically relevant and different from conventional strategies.
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Affiliation(s)
| | | | | | | | - Anne George
- Department of Oral Biology, University of Illinois Chicago, Chicago, IL, United States
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2
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Adasooriya D, Jeong JK, Kyeong M, Kan S, Kim J, Cho ES, Cho SW. Notum regulates the cusp and root patterns in mouse molar. Sci Rep 2024; 14:13633. [PMID: 38871845 PMCID: PMC11176191 DOI: 10.1038/s41598-024-64340-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 06/07/2024] [Indexed: 06/15/2024] Open
Abstract
Notum is a direct target of Wnt/β-catenin signaling and plays a crucial role as a Wnt inhibitor within a negative feedback loop. In the tooth, Notum is known to be expressed in odontoblasts, and severe dentin defects and irregular tooth roots have been reported in Notum-deficient mice. However, the precise expression pattern of Notum in early tooth development, and the role of Notum in crown and root patterns remain elusive. In the present study, we identified a novel Notum expression in primary enamel knot (EK), secondary EKs, and dental papilla during tooth development. Notum-deficient mice exhibited enlarged secondary EKs, resulting in broader cusp tips, altered cusp patterns, and reduced concavity in crown outline. These alterations in crown outline led to a reduction in cervical tongue length, thereby inducing root fusion in Notum-deficient mice. Overall, these results suggest that the secondary EK size, regulated by the Wnt/Notum negative feedback loop, has a significant impact on the patterns of crown and root during tooth morphogenesis.
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Affiliation(s)
- Dinuka Adasooriya
- Division of Anatomy and Developmental Biology, Department of Oral Biology, BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, Korea
| | - Ju-Kyung Jeong
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences, Jeonbuk National University School of Dentistry, Jeonju, Korea
| | - Minjae Kyeong
- Division of Anatomy and Developmental Biology, Department of Oral Biology, BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, Korea
| | - Shiqi Kan
- Division of Anatomy and Developmental Biology, Department of Oral Biology, BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, Korea
| | - Jiwoo Kim
- Division of Anatomy and Developmental Biology, Department of Oral Biology, BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, Korea
| | - Eui-Sic Cho
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences, Jeonbuk National University School of Dentistry, Jeonju, Korea.
| | - Sung-Won Cho
- Division of Anatomy and Developmental Biology, Department of Oral Biology, BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, Korea.
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3
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Miyano Y, Mikami M, Katsuragi H, Shinkai K. Effects of Sr 2+, BO 33-, and SiO 32- on Differentiation of Human Dental Pulp Stem Cells into Odontoblast-Like Cells. Biol Trace Elem Res 2023; 201:5585-5600. [PMID: 36917393 DOI: 10.1007/s12011-023-03625-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 03/06/2023] [Indexed: 03/15/2023]
Abstract
This study aimed to clarify the effects of strontium (Sr2+), borate (BO33-), and silicate (SiO32-) on cell proliferative capacity, the induction of differentiation into odontoblast-like cells (OLCs), and substrate formation of human dental pulp stem cells (hDPSCs). Sr2+, BO33-, and SiO32- solutions were added to the hDPSC culture medium at three different concentrations, totaling nine experimental groups. The effects of these ions on hDPSC proliferation, calcification, and collagen formation after 14, 21, and 28 days of culture were evaluated using a cell proliferation assay, a quantitative alkaline phosphatase (ALP) activity assay, and Alizarin Red S and Sirius Red staining, respectively. Furthermore, the effects of these ions on hDPSC differentiation into OLCs were assessed via quantitative polymerase chain reaction and immunocytochemistry. Sr2+ and SiO32- increased the expression of odontoblast markers; i.e., nestin, dentin matrix protein-1, dentin sialophosphoprotein, and ALP genes, compared with the control group. BO33- increased the ALP gene expression and activity. The results of this study suggested that Sr2+, BO33-, and SiO32- may induce hDPSC differentiation into OLCs.
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Affiliation(s)
- Yuko Miyano
- Advanced Operative Dentistry-Endodontics, The Nippon Dental University Graduate School of Life Dentistry at Niigata, Nigata, Japan
| | - Masato Mikami
- Department of Microbiology, The Nippon Dental University School of Life Dentistry at Niigata, Nigata, Japan
| | - Hiroaki Katsuragi
- Department of Microbiology, The Nippon Dental University School of Life Dentistry at Niigata, Nigata, Japan
| | - Koichi Shinkai
- Department of Operative Dentistry, The Nippon Dental University School of Life Dentistry at Niigata, 1-8 Hamaura-Cho, Chuo-Ku, Nigata, 951-8580, Japan.
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4
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Wang J, McVicar A, Chen Y, Deng HW, Zhao Z, Chen W, Li YP. Atp6i deficient mouse model uncovers transforming growth factor-β1 /Smad2/3 as a key signaling pathway regulating odontoblast differentiation and tooth root formation. Int J Oral Sci 2023; 15:35. [PMID: 37599332 PMCID: PMC10440342 DOI: 10.1038/s41368-023-00235-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 06/01/2023] [Accepted: 07/03/2023] [Indexed: 08/22/2023] Open
Abstract
The biomolecular mechanisms that regulate tooth root development and odontoblast differentiation are poorly understood. We found that Atp6i deficient mice (Atp6i-/-) arrested tooth root formation, indicated by truncated Hertwig's epithelial root sheath (HERS) progression. Furthermore, Atp6i deficiency significantly reduced the proliferation and differentiation of radicular odontogenic cells responsible for root formation. Atp6i-/- mice had largely decreased expression of odontoblast differentiation marker gene expression profiles (Col1a1, Nfic, Dspp, and Osx) in the alveolar bone. Atp6i-/- mice sample RNA-seq analysis results showed decreased expression levels of odontoblast markers. Additionally, there was a significant reduction in Smad2/3 activation, inhibiting transforming growth factor-β (TGF-β) signaling in Atp6i-/- odontoblasts. Through treating pulp precursor cells with Atp6i-/- or wild-type OC bone resorption-conditioned medium, we found the latter medium to promote odontoblast differentiation, as shown by increased odontoblast differentiation marker genes expression (Nfic, Dspp, Osx, and Runx2). This increased expression was significantly blocked by anti-TGF-β1 antibody neutralization, whereas odontoblast differentiation and Smad2/3 activation were significantly attenuated by Atp6i-/- OC conditioned medium. Importantly, ectopic TGF-β1 partially rescued root development and root dentin deposition of Atp6i-/- mice tooth germs were transplanted under mouse kidney capsules. Collectively, our novel data shows that the prevention of TGF-β1 release from the alveolar bone matrix due to OC dysfunction may lead to osteopetrosis-associated root formation via impaired radicular odontoblast differentiation. As such, this study uncovers TGF-β1 /Smad2/3 as a key signaling pathway regulating odontoblast differentiation and tooth root formation and may contribute to future therapeutic approaches to tooth root regeneration.
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Affiliation(s)
- Jue Wang
- Department of Pathology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Abigail McVicar
- Division in Cellular and Molecular Medicine, Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, Tulane University, New Orleans, LA, USA
| | - Yilin Chen
- Division in Cellular and Molecular Medicine, Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, Tulane University, New Orleans, LA, USA
| | - Hong-Wen Deng
- Tulane Center of Biomedical Informatics and Genomics, Deming Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Zhihe Zhao
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Wei Chen
- Department of Pathology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.
- Division in Cellular and Molecular Medicine, Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, Tulane University, New Orleans, LA, USA.
| | - Yi-Ping Li
- Department of Pathology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.
- Division in Cellular and Molecular Medicine, Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, Tulane University, New Orleans, LA, USA.
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5
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Fu Y, Miyazaki K, Chiba Y, Funada K, Yuta T, Tian T, Mizuta K, Kawahara J, Zhang L, Martin D, Iwamoto T, Takahashi I, Fukumoto S, Yoshizaki K. Identification of GPI-anchored protein LYPD1 as an essential factor for odontoblast differentiation in tooth development. J Biol Chem 2023; 299:104638. [PMID: 36963497 PMCID: PMC10130355 DOI: 10.1016/j.jbc.2023.104638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 02/19/2023] [Accepted: 03/13/2023] [Indexed: 03/26/2023] Open
Abstract
Lipid rafts are membrane microdomains rich in cholesterol, sphingolipids, glycosylphosphatidylinositol-anchored proteins (GPI-APs), and receptors. These lipid raft components are localized at the plasma membrane and are essential for signal transmission and organogenesis. However, few reports have been published on the specific effects of lipid rafts on tooth development. Using microarray and single-cell RNA sequencing methods, we found that a GPI-AP, lymphocyte antigen-6/Plaur domain-containing 1 (Lypd1), was specifically expressed in preodontoblasts. Depletion of Lypd1 in tooth germ using an ex vivo organ culture system and in mouse dental pulp (mDP) cells resulted in the inhibition of odontoblast differentiation. Activation of bone morphogenetic protein (BMP) signaling by BMP2 treatment in mDP cells promoted odontoblast differentiation via phosphorylation of Smad1/5/8, while this BMP2-mediated odontoblast differentiation was inhibited by depletion of Lypd1. Furthermore, we created a deletion construct of the C terminus containing the omega site in LYPD1; this site is necessary for localizing GPI-APs to the plasma membrane and lipid rafts. We identified that this site is essential for odontoblast differentiation and morphological change of mDP cells. These findings demonstrated that LYPD1 is a novel marker of preodontoblasts in the developing tooth; in addition, they suggest that LYPD1 is important for tooth development and that it plays a pivotal role in odontoblast differentiation by regulating Smad1/5/8 phosphorylation through its effect as a GPI-AP in lipid rafts.
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Affiliation(s)
- Yao Fu
- Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Kanako Miyazaki
- Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Yuta Chiba
- Dento-Craniofacial Development and Regeneration Research Center, Kyushu University Faculty of Dental Science, Fukuoka, Japan; Section of Pediatric Dentistry, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Keita Funada
- Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Tomomi Yuta
- Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Tian Tian
- Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Kanji Mizuta
- Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Jumpei Kawahara
- Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Ling Zhang
- Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Daniel Martin
- Genomics and Computational Biology Core (National Institute on Deafness and Other Communication Disorders), National Institutes of Health, Bethesda, Maryland, USA
| | - Tsutomu Iwamoto
- Division of Oral Health Sciences, Department of Pediatric Dentistry/Special Needs Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ichiro Takahashi
- Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Satoshi Fukumoto
- Dento-Craniofacial Development and Regeneration Research Center, Kyushu University Faculty of Dental Science, Fukuoka, Japan; Section of Pediatric Dentistry, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan; Division of Pediatric Dentistry, Department of Community Social Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan.
| | - Keigo Yoshizaki
- Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan; Dento-Craniofacial Development and Regeneration Research Center, Kyushu University Faculty of Dental Science, Fukuoka, Japan.
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Inchingolo AM, Patano A, Di Pede C, Inchingolo AD, Palmieri G, de Ruvo E, Campanelli M, Buongiorno S, Carpentiere V, Piras F, Settanni V, Viapiano F, Hazballa D, Rapone B, Mancini A, Di Venere D, Inchingolo F, Fatone MC, Palermo A, Minetti E, Lorusso F, Scarano A, Sauro S, Tartaglia GM, Bordea IR, Dipalma G, Malcangi G. Autologous Tooth Graft: Innovative Biomaterial for Bone Regeneration. Tooth Transformer® and the Role of Microbiota in Regenerative Dentistry. A Systematic Review. J Funct Biomater 2023; 14:jfb14030132. [PMID: 36976056 PMCID: PMC10058341 DOI: 10.3390/jfb14030132] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 02/24/2023] [Accepted: 02/25/2023] [Indexed: 03/05/2023] Open
Abstract
Different biomaterials, from synthetic products to autologous or heterologous grafts, have been suggested for the preservation and regeneration of bone. The aim of this study is to evaluate the effectiveness of autologous tooth as a grafting material and examine the properties of this material and its interactions with bone metabolism. PubMed, Scopus, Cochrane Library, and Web of Science were searched to find articles addressing our topic published from 1 January 2012 up to 22 November 2022, and a total of 1516 studies were identified. Eighteen papers in all were considered in this review for qualitative analysis. Demineralized dentin can be used as a graft material, since it shows high cell compatibility and promotes rapid bone regeneration by striking an ideal balance between bone resorption and production; it also has several benefits, such as quick recovery times, high-quality newly formed bone, low costs, no risk of disease transmission, the ability to be performed as an outpatient procedure, and no donor-related postoperative complications. Demineralization is a crucial step in the tooth treatment process, which includes cleaning, grinding, and demineralization. Since the presence of hydroxyapatite crystals prevents the release of growth factors, demineralization is essential for effective regenerative surgery. Even though the relationship between the bone system and dysbiosis has not yet been fully explored, this study highlights an association between bone and gut microbes. The creation of additional scientific studies to build upon and enhance the findings of this study should be a future objective of scientific research.
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Affiliation(s)
| | - Assunta Patano
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Chiara Di Pede
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | | | - Giulia Palmieri
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Elisabetta de Ruvo
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Merigrazia Campanelli
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Silvio Buongiorno
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Vincenzo Carpentiere
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Fabio Piras
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Vito Settanni
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Fabio Viapiano
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Denisa Hazballa
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Biagio Rapone
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Antonio Mancini
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Daniela Di Venere
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Francesco Inchingolo
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
- Correspondence: (F.I.); (M.C.F.); Tel.: +39-331-211-1104 (F.I.); +39-3479914635 (M.C.F.)
| | - Maria Celeste Fatone
- PTA Trani-ASL BT, Viale Padre Pio, 76125 Trani, Italy
- Correspondence: (F.I.); (M.C.F.); Tel.: +39-331-211-1104 (F.I.); +39-3479914635 (M.C.F.)
| | - Andrea Palermo
- College of Medicine and Dentistry Birmingham, University of Birmingham, Birmingham B4 6BN, UK
| | - Elio Minetti
- Department of Biomedical, Surgical, and Dental Science, Università Degli Studi di Milano, 20122 Milan, Italy
| | - Felice Lorusso
- Department of Innovative Technologies in Medicine and Dentistry, University of Chieti-Pescara, 66100 Chieti, Italy
| | - Antonio Scarano
- Department of Innovative Technologies in Medicine and Dentistry, University of Chieti-Pescara, 66100 Chieti, Italy
| | - Salvatore Sauro
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
- Dental Biomaterials and Minimally Invasive Dentistry, Department of Dentistry, Cardenal Herrera-CEU University, CEU Universities, C/Santiago Ramón y Cajal, s/n., Alfara del Patriarca, 46115 Valencia, Spain
| | - Gianluca Martino Tartaglia
- Department of Biomedical, Surgical and Dental Sciences, School of Dentistry, University of Milan, 20100 Milan, Italy
- UOC Maxillo-Facial Surgery and Dentistry Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Ioana Roxana Bordea
- Department of Oral Rehabilitation, Faculty of Dentistry, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania
| | - Gianna Dipalma
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Giuseppina Malcangi
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
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Ohlsson E, Galler KM, Widbiller M. A Compilation of Study Models for Dental Pulp Regeneration. Int J Mol Sci 2022; 23:ijms232214361. [PMID: 36430838 PMCID: PMC9695686 DOI: 10.3390/ijms232214361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/12/2022] [Accepted: 11/14/2022] [Indexed: 11/22/2022] Open
Abstract
Efforts to heal damaged pulp tissue through tissue engineering have produced positive results in pilot trials. However, the differentiation between real regeneration and mere repair is not possible through clinical measures. Therefore, preclinical study models are still of great importance, both to gain insights into treatment outcomes on tissue and cell levels and to develop further concepts for dental pulp regeneration. This review aims at compiling information about different in vitro and in vivo ectopic, semiorthotopic, and orthotopic models. In this context, the differences between monolayer and three-dimensional cell cultures are discussed, a semiorthotopic transplantation model is introduced as an in vivo model for dental pulp regeneration, and finally, different animal models used for in vivo orthotopic investigations are presented.
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Affiliation(s)
- Ella Ohlsson
- Department of Operative Dentistry and Periodontology, Friedrich-Alexander-University Erlangen-Nuernberg, D-91054 Erlangen, Germany
| | - Kerstin M. Galler
- Department of Operative Dentistry and Periodontology, Friedrich-Alexander-University Erlangen-Nuernberg, D-91054 Erlangen, Germany
| | - Matthias Widbiller
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, D-93053 Regensburg, Germany
- Correspondence:
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8
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He Y, Wang W, Luo P, Wang Y, He Z, Dong W, Jia M, Yu X, Yang B, Wang J. Mettl3 regulates hypertrophic differentiation of chondrocytes through modulating Dmp1 mRNA via Ythdf1-mediated m 6A modification. Bone 2022; 164:116522. [PMID: 35981698 DOI: 10.1016/j.bone.2022.116522] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 08/02/2022] [Accepted: 08/12/2022] [Indexed: 11/02/2022]
Abstract
As the main cells in endochondral osteogenesis, chondrocytes have limited self-repair ability due to weak proliferation activity, low density, and dedifferentiation tendency. Here, a thorough inquiry about the effect and underlying mechanisms of methyltransferase like-3 (Mettl3) on chondrocytes was made. Functionally, it was indicated that Mettl3 promoted the proliferation and hypertrophic differentiation of chondrocytes. Mechanically, Dmp1 (dentin matrix protein 1) was proved to be the downstream direct target of Mettl3 for m6A modification to regulate the differentiation of chondrocytes through bioinformatics analysis and correlated experiments. The Reader protein Ythdf1 mediated Dmp1 mRNA catalyzed by Mettl3. In vivo, the formation of subcutaneous ectopic cartilage-like tissue further supported the in vitro results. In conclusion, the gene regulation of Mettl3/m6A/Ythdf1/Dmp1 axis in hypertrophic differentiation of chondrocytes for the development of endochondral osteogenesis may supply a promising treatment strategy for the repair and regeneration of bone defects.
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Affiliation(s)
- Ying He
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School &Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Wei Wang
- Department of Hepatobiliary Surgery in East Hospital, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Ping Luo
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School &Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Yan Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School &Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Zhenru He
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School &Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Wei Dong
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School &Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Meie Jia
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School &Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Xijie Yu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School &Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Beining Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School &Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Jiawei Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School &Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China.
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9
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Characterization of SIBLING Proteins in the Mineralized Tissues. Dent J (Basel) 2022; 10:dj10080144. [PMID: 36005242 PMCID: PMC9406783 DOI: 10.3390/dj10080144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 07/22/2022] [Accepted: 07/29/2022] [Indexed: 01/27/2023] Open
Abstract
The SIBLING proteins are a family of non-collagenous proteins (NCPs) previously thought to be expressed only in dentin but have been demonstrated in other mineralized and non-mineralized tissues. They are believed to play vital roles in both osteogenesis and dentinogenesis. Since they are tightly regulated lifelong processes and involve a peak of mineralization, three different age groups were investigated. Fifteen wild-type (WT) mice were euthanized at ages 1, 3, and 6 months. Hematoxylin and eosin staining (H&E) was performed to localize various microscopic structures in the mice mandibles and tibias. The immunostaining pattern was compared using antibodies for dentin sialoprotein (DSP), dentin matrix protein 1 (DMP1), bone sialoprotein (BSP), and osteopontin (OPN). Immunostaining of DSP in tibia showed its most noticeable staining in the 3-month age group. DSP was expressed in alveolar bone, cellular cementum, and PDL. A similar expression of DMP1 was seen in the tibia and dentin. BSP was most noticeably detected in the tibia and acellular cementum. OPN was mainly expressed in the bone. A lower level of OPN was observed at all age groups in the teeth. The immunostaining intensity was the least detected for all proteins in the 6-month tibia sample. The expression patterns of the four SIBLING proteins showed variations in their staining intensity and temporospatial patterning concordant with skeletal and dental maturity. These findings suggest some role in this tightly regulated mineralization process.
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Krishnan RH, Sadu L, Das UR, Satishkumar S, Pranav Adithya S, Saranya I, Akshaya R, Selvamurugan N. Role of p300, a histone acetyltransferase enzyme, in osteoblast differentiation. Differentiation 2022; 124:43-51. [DOI: 10.1016/j.diff.2022.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 02/03/2022] [Accepted: 02/04/2022] [Indexed: 12/21/2022]
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11
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Kang KR, Kim JS, Seo JY, Lim H, Kim TH, Yu SK, Kim HJ, Kim CS, Chun HS, Park JC, Kim DK. Nicotinamide phosphoribosyltransferase regulates the cell differentiation and mineralization in cultured odontoblasts. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY 2022; 26:37-45. [PMID: 34965994 PMCID: PMC8723980 DOI: 10.4196/kjpp.2022.26.1.37] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/16/2021] [Accepted: 11/23/2021] [Indexed: 11/15/2022]
Affiliation(s)
- Kyeong-Rok Kang
- The Institute of Dental Science, Chosun University, Gwangju 61452, Korea
| | - Jae-Sung Kim
- The Institute of Dental Science, Chosun University, Gwangju 61452, Korea
| | - Jeong-Yeon Seo
- The Institute of Dental Science, Chosun University, Gwangju 61452, Korea
- Department of Integrative Biological Sciences & BK21 FOUR Educational Research Group for Ageassociated Disorder Control Technology, Chosun University, Gwangju 61452, Korea
| | - HyangI Lim
- The Institute of Dental Science, Chosun University, Gwangju 61452, Korea
| | - Tae-Hyeon Kim
- The Institute of Dental Science, Chosun University, Gwangju 61452, Korea
| | - Sun-Kyoung Yu
- The Institute of Dental Science, Chosun University, Gwangju 61452, Korea
| | - Heung-Joong Kim
- The Institute of Dental Science, Chosun University, Gwangju 61452, Korea
| | - Chun Sung Kim
- The Institute of Dental Science, Chosun University, Gwangju 61452, Korea
| | - Hong Sung Chun
- Department of Integrative Biological Sciences & BK21 FOUR Educational Research Group for Ageassociated Disorder Control Technology, Chosun University, Gwangju 61452, Korea
| | - Joo-Cheol Park
- Laboratory for the Study of Regenerative Dental Medicine, Department of Oral Histology-Developmental Biology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul 08826, Korea
| | - Do Kyung Kim
- The Institute of Dental Science, Chosun University, Gwangju 61452, Korea
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Yoshida S, Sugii H, Itoyama T, Kadowaki M, Hasegawa D, Tomokiyo A, Hamano S, Ipposhi K, Yamashita K, Maeda H. Development of a novel direct dental pulp-capping material using 4-META/MMA-TBB resin with nano hydroxyapatite. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 130:112426. [PMID: 34702511 DOI: 10.1016/j.msec.2021.112426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 08/30/2021] [Accepted: 09/06/2021] [Indexed: 01/09/2023]
Abstract
In the case of dental pulp exposure, direct pulp capping is often performed to preserve vital dental pulp tissue. Numerous studies regarding the development of direct pulp-capping materials have been conducted, but materials with an appropriate sealing ability, which induce dense reparative dentin formation, have not been developed. Although nano hydroxyapatite (naHAp) is a bone-filling material with bioactivity and biocompatibility, the inductive effects of naHAp on reparative dentin formation remain unclear. In the present study, the effects of dental adhesive material 4-methacryloxyethyl trimellitate anhydride/methyl methacrylate tri-n-butylborane [4-META/MMA-TBB or Super-bond (SB)], which included 10%, 30%, and 50% naHAp (naHAp/SB) on odontoblastic differentiation of dental pulp stem cells (DPSCs) and reparative dentin formation were investigated. Scanning electron microscopy (SEM) and energy dispersive X-ray spectrometer analysis were performed to verify the existence of naHAp particles on the surface of naHAp/SB discs. The tensile adhesive strength of naHAp/SB was measured using a universal testing machine. As a result, 10% naHAp/SB and 30% naHAp/SB showed almost the same tensile adhesive strength as SB but 50% naHAp/SB showed significantly lower than the other experimental group. WST-1 proliferation assay and SEM analysis revealed that naHAp/SB did not affect the proliferation of DPSCs. Calcium release assay, quantitative RT-PCR, and western blotting analysis demonstrated that naHAp/SB did not release calcium ion but 30% naHAp/SB increased the expression of calcium-sensing receptor (CaSR) in DPSCs. Additionally, quantitative RT-PCR, western blotting analysis, Alizarin Red S- and von Kossa staining revealed that 30% naHAp/SB induced odontoblastic differentiation of DPSCs, which was inhibited by a MEK/ERK inhibitor and CaSR antagonist. Furthermore, 30% naHAp/SB promoted dense reparative dentin formation in an experimentally-formed rat dental pulp exposure model. These findings suggest that 30% naHAp/SB can be used as an ideal direct pulp capping material.
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Affiliation(s)
- Shinichiro Yoshida
- Division of Endodontology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
| | - Hideki Sugii
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Tomohiro Itoyama
- Division of Endodontology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Masataka Kadowaki
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Daigaku Hasegawa
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Atsushi Tomokiyo
- Division of Endodontology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Sayuri Hamano
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; OBT Research Center, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Keita Ipposhi
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Kozue Yamashita
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Hidefumi Maeda
- Division of Endodontology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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13
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Abstract
Non-syndromic inherited defects of tooth dentin are caused by two classes of dominant negative/gain-of-function mutations in dentin sialophosphoprotein (DSPP): 5' mutations affecting an N-terminal targeting sequence and 3' mutations that shift translation into the - 1 reading frame. DSPP defects cause an overlapping spectrum of phenotypes classified as dentin dysplasia type II and dentinogenesis imperfecta types II and III. Using CRISPR/Cas9, we generated a Dspp-1fs mouse model by introducing a FLAG-tag followed by a single nucleotide deletion that translated 493 extraneous amino acids before termination. Developing incisors and/or molars from this mouse and a DsppP19L mouse were characterized by morphological assessment, bSEM, nanohardness testing, histological analysis, in situ hybridization and immunohistochemistry. DsppP19L dentin contained dentinal tubules but grew slowly and was softer and less mineralized than the wild-type. DsppP19L incisor enamel was softer than normal, while molar enamel showed reduced rod/interrod definition. Dspp-1fs dentin formation was analogous to reparative dentin: it lacked dentinal tubules, contained cellular debris, and was significantly softer and thinner than Dspp+/+ and DsppP19L dentin. The Dspp-1fs incisor enamel appeared normal and was comparable to the wild-type in hardness. We conclude that 5' and 3' Dspp mutations cause dental malformations through different pathological mechanisms and can be regarded as distinct disorders.
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Zhao L, Ito S, Arai A, Udagawa N, Horibe K, Hara M, Nishida D, Hosoya A, Masuko R, Okabe K, Shin M, Li X, Matsuo K, Abe S, Matsunaga S, Kobayashi Y, Kagami H, Mizoguchi T. Odontoblast death drives cell-rich zone-derived dental tissue regeneration. Bone 2021; 150:116010. [PMID: 34020080 DOI: 10.1016/j.bone.2021.116010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/10/2021] [Accepted: 05/12/2021] [Indexed: 12/25/2022]
Abstract
Severe dental tissue damage induces odontoblast death, after which dental pulp stem and progenitor cells (DPSCs) differentiate into odontoblast-like cells, contributing to reparative dentin. However, the damage-induced mechanism that triggers this regeneration process is still not clear. We aimed to understand the effect of odontoblast death without hard tissue damage on dental regeneration. Herein, using a Cre/LoxP-based strategy, we demonstrated that cell-rich zone (CZ)-localizing Nestin-GFP-positive and Nestin-GFP-negative cells proliferate and differentiate into odontoblast-like cells in response to odontoblast depletion. The regenerated odontoblast-like cells played a role in reparative dentin formation. RNA-sequencing analysis revealed that the expression of odontoblast differentiation- and activation-related genes was upregulated in the pulp in response to odontoblast depletion even without damage to dental tissue. In this regenerative process, the expression of type I parathyroid hormone receptor (PTH1R) increased in the odontoblast-depleted pulp, thereby boosting dentin formation. The levels of PTH1R and its downstream mediator, i.e., phosphorylated cyclic AMP response element-binding protein (Ser133) increased in the physically damaged pulp. Collectively, odontoblast death triggered the PTH1R cascade, which may represent a therapeutic target for inducing CZ-mediated dental regeneration.
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Affiliation(s)
- Lijuan Zhao
- Institute for Oral Science, Matsumoto Dental University, Nagano, Japan
| | - Shinichirou Ito
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Tokyo, Japan
| | - Atsushi Arai
- Department of Orthodontics, Matsumoto Dental University, Nagano, Japan
| | - Nobuyuki Udagawa
- Department of Oral Biochemistry, Matsumoto Dental University, Nagano, Japan
| | - Kanji Horibe
- Department of Oral Histology, Matsumoto Dental University, Nagano, Japan
| | - Miroku Hara
- Department of Oral Diagnostics and Comprehensive Dentistry, Matsumoto Dental University Hospital, Nagano, Japan
| | - Daisuke Nishida
- Oral Health Science Center, Tokyo Dental College, Tokyo, Japan
| | - Akihiro Hosoya
- Division of Histology, School of Dentistry, Health Science University of Hokkaido, Hokkaido, Japan
| | | | - Koji Okabe
- Section of Cellular Physiology, Department of Physiological Sciences and Molecular Biology, Fukuoka Dental College, Fukuoka, Japan
| | - Masashi Shin
- Section of Cellular Physiology, Department of Physiological Sciences and Molecular Biology, Fukuoka Dental College, Fukuoka, Japan; Oral Medicine Center, Fukuoka Dental College, Fukuoka, Japan
| | - Xianqi Li
- Department of Oral and Maxillofacial Surgery, Matsumoto Dental University, Nagano, Japan
| | - Koichi Matsuo
- Laboratory of Cell and Tissue Biology, Keio University School of Medicine, Tokyo, Japan
| | - Shinichi Abe
- Department of Anatomy, Tokyo Dental College, Tokyo, Japan
| | | | | | - Hideaki Kagami
- Institute for Oral Science, Matsumoto Dental University, Nagano, Japan
| | - Toshihide Mizoguchi
- Institute for Oral Science, Matsumoto Dental University, Nagano, Japan; Oral Health Science Center, Tokyo Dental College, Tokyo, Japan.
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15
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Peng W, Huan Z, Pei G, Li J, Cao Y, Jiang L, Zhu Y. Silicate bioceramics elicit proliferation and odonto-genic differentiation of human dental pulp cells. Dent Mater J 2021; 41:27-36. [PMID: 34408120 DOI: 10.4012/dmj.2021-042] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study aimed to investigate the effects of silicates on the proliferation and odontogenic differentiation of human dental pulp cells (hDPCs) in vitro. HDPCs were cultured in the presence of calcium silicate (CS) extracts, while calcium hydroxide (CH) extracts and culture medium without CH or CS were used as the control groups. The calcium and phosphorus ion concentrations in the CS were similar to those in the control groups, but the concentration of silicon ions in the CS extracts was higher than that in the control groups. HDPCs cultured with CS and CH extracts at dilution of 1/128 proliferated significantly more than those cultured with the control treatments. CS extracts promoted cell migration, enhanced the expression of odontogenic marker genes and conspicuously increased odontogenesis-related protein production and the release of cytokines, suggesting that CS bioactive ceramics possess excellent biocompatibility and bioactivity and have the potential for application as pulp-capping agents.
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Affiliation(s)
- Weiwei Peng
- Department of General Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology
| | - Zhiguang Huan
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences
| | - Ge Pei
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences.,College of Chemistry and Materials Science, Shanghai Normal University
| | - Jinheng Li
- Department of General Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology
| | - Ying Cao
- Department of General Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology
| | - Long Jiang
- Department of General Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology
| | - Yaqin Zhu
- Department of General Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology
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Yamada M, Nagayama M, Miyamoto Y, Kawano S, Takitani Y, Tanaka M, Ehara M, Nakao J, Ochiai T, Shibukawa Y, Yoshida T. Mineral Trioxide Aggregate (MTA) Upregulates the Expression of DMP1 in Direct Pulp Capping in the Rat Molar. MATERIALS (BASEL, SWITZERLAND) 2021; 14:4640. [PMID: 34443162 PMCID: PMC8400143 DOI: 10.3390/ma14164640] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 08/06/2021] [Accepted: 08/13/2021] [Indexed: 02/06/2023]
Abstract
Mineral trioxide aggregate (MTA) is an alternative endodontic material that predicts conductive or inductive calcified tissue formation from immature pulp mesenchymal stem cells (IPMSCs). The purpose of this study was to investigate whether MTA could promote reparative odontoblast differentiation via IPMSCs in the early phase of regeneration and compare with calcium hydroxide (CH). Direct pulp capping using calcium hydroxide (CH), MTA, and MTA with platelet-rich plasma (MTA + PRP) was performed on maxillary first molars of 8-week-old male Wistar rats (n = 36). After 3, 7, or 14 days, the teeth were analyzed for mineral density (MD) and volume of MD (VMD) via micro-focusing computed tomography (µCT), nestin, dentin matrix acidic phosphoprotein 1 (DMP1) immunohistochemistry, and real-time PCR for DMP1 mRNA expression. MTA stimulated the early phase differentiation of the IPMSCs into odontoblasts, with positive results for nestin and DMP1 compared with CH. Moreover, MTA + PRP stimulated calcified granule and dentin bridge formation through calcium mineral deposition, following the induction of DMP1 mRNA expression in IPMSCs. Our results suggested that the combination of MTA and PRP is an effective and clinically applicable method for activating endogenous dental pulp stem cells into odontoblasts in the early stages of pulp regeneration.
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Affiliation(s)
- Maiko Yamada
- Department of Endodontics, Division of Oral Functional Science and Rehabilitation, School of Dentistry, Asahi University, Mizuho, Gifu 501-0296, Japan; (M.Y.); (S.K.); (Y.T.); (M.T.); (T.Y.)
| | - Motohiko Nagayama
- Department of Oral Pathology, Division of Oral Pathogenesis and Disease Control, School of Dentistry, Asahi University, Mizuho, Gifu 501-0296, Japan; (Y.M.); (M.E.); (J.N.); (T.O.)
| | - Yuka Miyamoto
- Department of Oral Pathology, Division of Oral Pathogenesis and Disease Control, School of Dentistry, Asahi University, Mizuho, Gifu 501-0296, Japan; (Y.M.); (M.E.); (J.N.); (T.O.)
| | - Satoshi Kawano
- Department of Endodontics, Division of Oral Functional Science and Rehabilitation, School of Dentistry, Asahi University, Mizuho, Gifu 501-0296, Japan; (M.Y.); (S.K.); (Y.T.); (M.T.); (T.Y.)
| | - Yoshiaki Takitani
- Department of Endodontics, Division of Oral Functional Science and Rehabilitation, School of Dentistry, Asahi University, Mizuho, Gifu 501-0296, Japan; (M.Y.); (S.K.); (Y.T.); (M.T.); (T.Y.)
| | - Masashi Tanaka
- Department of Endodontics, Division of Oral Functional Science and Rehabilitation, School of Dentistry, Asahi University, Mizuho, Gifu 501-0296, Japan; (M.Y.); (S.K.); (Y.T.); (M.T.); (T.Y.)
| | - Michiko Ehara
- Department of Oral Pathology, Division of Oral Pathogenesis and Disease Control, School of Dentistry, Asahi University, Mizuho, Gifu 501-0296, Japan; (Y.M.); (M.E.); (J.N.); (T.O.)
| | - Juna Nakao
- Department of Oral Pathology, Division of Oral Pathogenesis and Disease Control, School of Dentistry, Asahi University, Mizuho, Gifu 501-0296, Japan; (Y.M.); (M.E.); (J.N.); (T.O.)
| | - Takanaga Ochiai
- Department of Oral Pathology, Division of Oral Pathogenesis and Disease Control, School of Dentistry, Asahi University, Mizuho, Gifu 501-0296, Japan; (Y.M.); (M.E.); (J.N.); (T.O.)
| | - Yoshihiro Shibukawa
- Department of Removable Partial Prosthodontics, Tokyo Dental College, Chiyoda-Ku, Tokyo 101-0061, Japan;
| | - Takakazu Yoshida
- Department of Endodontics, Division of Oral Functional Science and Rehabilitation, School of Dentistry, Asahi University, Mizuho, Gifu 501-0296, Japan; (M.Y.); (S.K.); (Y.T.); (M.T.); (T.Y.)
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17
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Korkmaz Y, Imhof T, Kämmerer PW, Bloch W, Rink-Notzon S, Möst T, Weber M, Kesting M, Galler KM, Deschner J. The colocalizations of pulp neural stem cells markers with dentin matrix protein-1, dentin sialoprotein and dentin phosphoprotein in human denticle (pulp stone) lining cells. Ann Anat 2021; 239:151815. [PMID: 34400302 DOI: 10.1016/j.aanat.2021.151815] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/01/2021] [Accepted: 08/02/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND The primary dentin, secondary dentin, and reactive tertiary dentin are formed by terminal differentiated odontoblasts, whereas atubular reparative tertiary dentin is formed by odontoblast-like cells. Odontoblast-like cells differentiate from pulpal stem cells, which express the neural stem cell markers nestin, S100β, Sox10, and P0. The denticle (pulp stone) is an unique mineralized extracellular matrix that frequently occurs in association with the neurovascular structures in the dental pulp. However, to date, the cellular origin of denticles in human dental pulp is unclear. In addition, the non-collagenous extracellular dentin matrix proteins dentin matrix protein 1 (DMP1), dentin sialoprotein (DSP), and dentin phosphoprotein (DPP) have been well characterized in the dentin matrix, whereas their role in the formation and mineralization of the denticle matrix remains to be clarified. METHODS To characterize the formation of denticle, healthy human third molars (n = 59) were completely sectioned and evaluated by HE staining in different layers at 720 µm intervals. From these samples, molars with (n = 5) and without denticles (n = 8) were selected. Using consecutive cryo-sections from a layer containing denticles of different sizes, we examined DMP1, DSP, and DPP in denticle lining cells and tested their co-localizations with the glial stem cell markers nestin, S100β, Sox10, and P0 by quantitative and double staining methods. RESULTS DMP1, DSP and DPP were found in odontoblasts, whereas denticle lining cells were positive only for DMP1 and DSP but not for DPP. Nestin was detected in both odontoblasts and denticle lining cells. S100β, Sox10, and P0 were co-localized with DMP1 and DSP in different subpopulations of denticle lining cells. CONCLUSIONS The co-localization of S100β, Sox10, and P0 with DMP1 and DSP in denticle lining cells suggest that denticle lining cells are originated from glial and/or endoneurial mesenchymal stem cells which are involved in biomineralization of denticle matrix by secretion of DMP1 and DSP. Since denticles are atubular compared to primary, secondary, reactionary tertiary dentin and denticle formed by odontoblasts, our results suggest that DPP could be one of the proteins involved in the complex regulation of dentinal tubule formation.
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Affiliation(s)
- Yüksel Korkmaz
- Department of Periodontology and Operative Dentistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany.
| | - Thomas Imhof
- Institute for Experimental Dental Research and Oral Musculoskeletal Biology, Center for Biochemistry, Medical Faculty, University of Cologne, Cologne, Germany
| | - Peer W Kämmerer
- Department of Oral, and Maxillofacial and Plastic Surgery, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Wilhelm Bloch
- Institute of Cardiovascular Research and Sport Medicine, Department of Molecular and Cellular Sport Medicine, German Sport University Cologne, Cologne, Germany
| | - Svenja Rink-Notzon
- Department of Prosthetic Dentistry, School of Dental and Oral Medicine, University of Cologne, Cologne, Germany; Department of Pediatrics and Adolescent Medicine, Experimental Neonatology, Center for Biochemistry, Faculty of Medicine, University of Cologne, Cologne, Germany
| | - Tobias Möst
- Department of Oral and Maxillofacial Surgery, University Hospital Erlangen, Friedrich Alexander University, Erlangen, Germany
| | - Manuel Weber
- Department of Oral and Maxillofacial Surgery, University Hospital Erlangen, Friedrich Alexander University, Erlangen, Germany
| | - Marco Kesting
- Department of Oral and Maxillofacial Surgery, University Hospital Erlangen, Friedrich Alexander University, Erlangen, Germany
| | - Kerstin M Galler
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, Regensburg, Germany
| | - James Deschner
- Department of Periodontology and Operative Dentistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
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18
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Zhao D, Wang X, Tie C, Cheng B, Yang S, Sun Z, Yin M, Li X, Yin M. Bio-functional strontium-containing photocrosslinked alginate hydrogels for promoting the osteogenic behaviors. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 126:112130. [PMID: 34082947 DOI: 10.1016/j.msec.2021.112130] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 04/05/2021] [Accepted: 04/20/2021] [Indexed: 12/23/2022]
Abstract
In recent years, photocrosslinked alginate hydrogel has been widely studied in bone tissue engineering, owing to its numerous advantages. However, there are still some shortcomings like insufficient mechanical strength and lack of bone induction. To compensate for these deficiencies, in this work, a novel doped strontium (Sr) photocrosslinked methacrylated alginate (Sr-PMA) hydrogel was developed. Photocrosslinked alginate hydrogel fabricated via crosslinking methacrylate-modified alginate under ultraviolet (UV) light was placed into strontium solutions to prepare Sr-PMA gel by chelating reaction. The chemical structures, swelling behaviors, degradation profiles, elastic moduli, Sr2+ ion release and surface morphology of the Sr-PMA hydrogel were characterized, and we found that physical properties of the gels can be tailored by varying concentration of Sr2+ ions. And MC3T3-E1 cell viability, proliferation and mineralization outside the hydrogel were also investigated. Further research on cell survival, multiplication, osteogenic differentiation of the cells encapsulated in Sr-PMA hydrogels were explored. In vitro studies of biological properties revealed that incorporation of Sr2+ into photocrosslinked alginate gels significantly improved osteogenic differentiation capabilities and mineralization via stimulating expression of osteogenesis related genes and proteins of the cells compared to strontium-free photocrosslinked alginate gels. The research demonstrates that the innovative Sr-PMA hydrogels possessing adjustable physical performances, excellent biocompatibility and osteogenic differentiation capabilities could be potentially applied to bone tissue engineering and regenerative medicine. Meanwhile, it also provides a reference for the modification of biological properties of biomaterials.
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Affiliation(s)
- Delu Zhao
- Hubei Tumor Biological Behavior Key Laboratory, Center of stomatology, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei Province, China; Department of Prosthodontics, Hefei Stomatological Clinic Hospital, Anhui Medical University, & Hefei Stomatological Hospital, Hefei 230001, Anhui Province, China
| | - Xin Wang
- Hubei Tumor Biological Behavior Key Laboratory, Center of stomatology, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei Province, China
| | - Chaorong Tie
- Hubei Tumor Biological Behavior Key Laboratory, Center of stomatology, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei Province, China
| | - Bo Cheng
- Hubei Tumor Biological Behavior Key Laboratory, Center of stomatology, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei Province, China
| | - Sisi Yang
- Hubei Tumor Biological Behavior Key Laboratory, Center of stomatology, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei Province, China
| | - Zhen Sun
- Hubei Tumor Biological Behavior Key Laboratory, Center of stomatology, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei Province, China
| | - Miaomiao Yin
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, Hubei Province, China
| | - Xiaobao Li
- Department of Stomatology, Affiliated Wuhan Children's Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, Hubei Province, China
| | - Miao Yin
- Hubei Tumor Biological Behavior Key Laboratory, Center of stomatology, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei Province, China.
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Carvalho MS, Cabral JMS, da Silva CL, Vashishth D. Bone Matrix Non-Collagenous Proteins in Tissue Engineering: Creating New Bone by Mimicking the Extracellular Matrix. Polymers (Basel) 2021; 13:polym13071095. [PMID: 33808184 PMCID: PMC8036283 DOI: 10.3390/polym13071095] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/18/2021] [Accepted: 03/20/2021] [Indexed: 02/06/2023] Open
Abstract
Engineering biomaterials that mimic the extracellular matrix (ECM) of bone is of significant importance since most of the outstanding properties of the bone are due to matrix constitution. Bone ECM is composed of a mineral part comprising hydroxyapatite and of an organic part of primarily collagen with the rest consisting on non-collagenous proteins. Collagen has already been described as critical for bone tissue regeneration; however, little is known about the potential effect of non-collagenous proteins on osteogenic differentiation, even though these proteins were identified some decades ago. Aiming to engineer new bone tissue, peptide-incorporated biomimetic materials have been developed, presenting improved biomaterial performance. These promising results led to ongoing research focused on incorporating non-collagenous proteins from bone matrix to enhance the properties of the scaffolds namely in what concerns cell migration, proliferation, and differentiation, with the ultimate goal of designing novel strategies that mimic the native bone ECM for bone tissue engineering applications. Overall, this review will provide an overview of the several non-collagenous proteins present in bone ECM, their functionality and their recent applications in the bone tissue (including dental) engineering field.
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Affiliation(s)
- Marta S. Carvalho
- Center for Biotechnology and Interdisciplinary Studies, Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
- Department of Bioengineering and iBB—Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal; (J.M.S.C.); (C.L.d.S.)
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
- Correspondence: (M.S.C.); (D.V.)
| | - Joaquim M. S. Cabral
- Department of Bioengineering and iBB—Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal; (J.M.S.C.); (C.L.d.S.)
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - Cláudia L. da Silva
- Department of Bioengineering and iBB—Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal; (J.M.S.C.); (C.L.d.S.)
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - Deepak Vashishth
- Center for Biotechnology and Interdisciplinary Studies, Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
- Correspondence: (M.S.C.); (D.V.)
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20
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Kang J, Chen H, Zhang F, Yan T, Fan W, Jiang L, He H, Huang F. RORα Regulates Odontoblastic Differentiation and Mediates the Pro-Odontogenic Effect of Melatonin on Dental Papilla Cells. Molecules 2021; 26:1098. [PMID: 33669807 PMCID: PMC7922395 DOI: 10.3390/molecules26041098] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 02/15/2021] [Accepted: 02/16/2021] [Indexed: 12/28/2022] Open
Abstract
Dental papilla cells (DPCs), precursors of odontoblasts, are considered promising seed cells for tissue engineering. Emerging evidence suggests that melatonin promotes odontoblastic differentiation of DPCs and affects tooth development, although the precise mechanisms remain unknown. Retinoid acid receptor-related orphan receptor α (RORα) is a nuclear receptor for melatonin that plays a critical role in cell differentiation and embryonic development. This study aimed to explore the role of RORα in odontoblastic differentiation and determine whether melatonin exerts its pro-odontogenic effect via RORα. Herein, we observed that RORα was expressed in DPCs and was significantly increased during odontoblastic differentiation in vitro and in vivo. The overexpression of RORα upregulated the expression of odontogenic markers, alkaline phosphatase (ALP) activity and mineralized nodules formation (p < 0.05). In contrast, odontoblastic differentiation of DPCs was suppressed by RORα knockdown. Moreover, we found that melatonin elevated the expression of odontogenic markers, which was accompanied by the upregulation of RORα (p < 0.001). Utilising small interfering RNA, we further demonstrated that RORα inhibition attenuated melatonin-induced odontogenic gene expression, ALP activity and matrix mineralisation (p < 0.01). Collectively, these results provide the first evidence that RORα can promote odontoblastic differentiation of DPCs and mediate the pro-odontogenic effect of melatonin.
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Affiliation(s)
- Jun Kang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; (J.K.); (H.C.); (F.Z.); (T.Y.); (W.F.); (L.J.)
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510080, China
| | - Haoling Chen
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; (J.K.); (H.C.); (F.Z.); (T.Y.); (W.F.); (L.J.)
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510080, China
| | - Fuping Zhang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; (J.K.); (H.C.); (F.Z.); (T.Y.); (W.F.); (L.J.)
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510080, China
| | - Tong Yan
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; (J.K.); (H.C.); (F.Z.); (T.Y.); (W.F.); (L.J.)
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510080, China
| | - Wenguo Fan
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; (J.K.); (H.C.); (F.Z.); (T.Y.); (W.F.); (L.J.)
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510080, China
| | - Liulin Jiang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; (J.K.); (H.C.); (F.Z.); (T.Y.); (W.F.); (L.J.)
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510080, China
| | - Hongwen He
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510080, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510080, China
| | - Fang Huang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; (J.K.); (H.C.); (F.Z.); (T.Y.); (W.F.); (L.J.)
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510080, China
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21
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Chang HH, Chen IL, Wang YL, Chang MC, Tsai YL, Lan WC, Wang TM, Yeung SY, Jeng JH. Regulation of the regenerative activity of dental pulp stem cells from exfoliated deciduous teeth (SHED) of children by TGF-β1 is associated with ALK5/Smad2, TAK1, p38 and MEK/ERK signaling. Aging (Albany NY) 2020; 12:21253-21272. [PMID: 33148869 PMCID: PMC7695363 DOI: 10.18632/aging.103848] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 07/20/2020] [Indexed: 12/13/2022]
Abstract
Transforming growth factor-β1 (TGF-β1) regulates wound healing/regeneration and aging processes. Dental pulp stem cells from human exfoliated deciduous teeth (SHED) are cell sources for treatment of age-related disorders. We studied the effect of TGF-β1 on SHED and related signaling. SHED were treated with TGF-β1 with/without pretreatment/co-incubation by SB431542, U0126, 5Z-7-oxozeaenol or SB203580. Sircol collagen assay, 3-(4,5-Dimethylthiazol-2-yl)-2,5- diphenyl tetrazolium bromide (MTT) assay, alkaline phosphatase (ALP) assay, RT-PCR, western blotting and PathScan phospho-ELISA were used to measure the effects. We found that SHED expressed ALK1, ALK3, ALK5, TGF-RII, betaglycan and endoglin mRNA. TGF-β1 stimulated p-Smad2, p-TAK1, p-ERK, p-p38 and cyclooxygenase-2 (COX-2) protein expression. It enhanced proliferation and collagen content of SHED that were attenuated by SB431542, 5Z-7-oxozeaenol and SB203580, but not U0126. TGF-β1 (0.5-1 ng/ml) stimulated ALP of SHED, whereas 5-10 ng/ml TGF-β1 suppressed ALP. SB431542 reversed the effects of TGF-β1. However, 5Z-7-oxozeaenol, SB203580 and U0126 only reversed the stimulatory effect of TGF-β1 on ALP. Four inhibitors attenuated TGF-β1-induced COX-2 expression. TGF-β1-stimulated TIMP-1 and N-cadherin was inhibited by SB431542 and 5Z-7-oxozeaenol. These results indicate that TGF-β1 affects SHED by differential regulation of ALK5/Smad2/3, TAK1, p38 and MEK/ERK. TGF-β1 and SHED could potentially be used for tissue engineering/regeneration and treatment of age-related diseases.
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Affiliation(s)
- Hsiao-Hua Chang
- Department of Dentistry, National Taiwan University Hospital, and School of Dentistry, National Taiwan University Medical College, Taipei, Taiwan
| | - Il-Ly Chen
- Department of Dentistry, National Taiwan University Hospital, and School of Dentistry, National Taiwan University Medical College, Taipei, Taiwan
| | - Yin-Lin Wang
- Department of Dentistry, National Taiwan University Hospital, and School of Dentistry, National Taiwan University Medical College, Taipei, Taiwan
| | - Mei-Chi Chang
- Chang Gung University of Science and Technology, Kwei-Shan, Taoyuan, Taiwan.,Department of Dentistry, Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Yi-Ling Tsai
- Department of Dentistry, National Taiwan University Hospital, and School of Dentistry, National Taiwan University Medical College, Taipei, Taiwan
| | - Wen-Chien Lan
- Department of Oral Hygiene Care, Ching Kuo Institute of Management and Health, Keelung, Taiwan
| | - Tong-Mei Wang
- Department of Dentistry, National Taiwan University Hospital, and School of Dentistry, National Taiwan University Medical College, Taipei, Taiwan
| | - Sin-Yuet Yeung
- Department of Dentistry, Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Jiiang-Huei Jeng
- Department of Dentistry, National Taiwan University Hospital, and School of Dentistry, National Taiwan University Medical College, Taipei, Taiwan.,School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
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22
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Li H, Sun J, Yang H, Han X, Luo X, Liao L, Yang B, Zhu T, Huo F, Guo W, Tian W. Recruited CD68 +CD206 + macrophages orchestrate graft immune tolerance to prompt xenogeneic-dentin matrix-based tooth root regeneration. Bioact Mater 2020; 6:1051-1072. [PMID: 33102946 PMCID: PMC7567936 DOI: 10.1016/j.bioactmat.2020.09.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 09/23/2020] [Accepted: 09/29/2020] [Indexed: 02/05/2023] Open
Abstract
Successful regenerative medicine strategies of xenogeneic extracellular matrix need a synergistic balance among inflammation, fibrosis, and remodeling process. Adaptive macrophage subsets have been identified to modulate inflammation and orchestrate the repair of neighboring parenchymal tissues. This study fabricated PPARγ-primed CD68+CD206+ M2 phenotype (M2γ), and firstly verified their anti-inflammatory and tissue-regenerating roles in xenogeneic bioengineered organ regeneration. Our results showed that Th1-type CD3+CD8+ T cell response to xenogeneic-dentin matrix-based bioengineered root complex (xeno-complex) was significantly inhibited by M2γ macrophage in vitro. PPARγ activation also timely recruited CD68+CD206+ tissue macrophage polarization to xeno-complex in vivo. These subsets alleviated proinflammatory cytokines (TNF-α, IFN-γ) at the inflammation site and decreased CD3+CD8+ T lymphocytes in the periphery system. When translated to an orthotopic nonhuman primate model, PPARγ-primed M2 macrophages immunosuppressed IL-1β, IL-6, TNF-α, MMPs to enable xeno-complex to effectively escape immune-mediated rejection and initiate graft-host synergistic integrity. These collective activities promoted the differentiation of odontoblast-like and periodontal-like cells to guide pulp-dentin and cementum-PDLs-bone regeneration and rescued partially injured odontogenesis such as DSPP and periostin expression. Finally, the regenerated root showed structure-biomechanical and functional equivalency to the native tooth. The timely conversion of M1-to-M2 macrophage mainly orchestrated odontogenesis, fibrogenesis, and osteogenesis, which represents a potential modulator for intact parenchymal-stromal tissue regeneration of targeted organs. Alternative polarized M2 macrophage could perform anti-inflammatory effects to inhibit xenogeneic host-to-graft rejection. A model of bioengineered tooth root regeneration was used to study parenchymal/hard and stromal/soft tissues regeneration. PPARγ-primed M2 macrophage orchestrated graft immune tolerance to prompt odontogenesis, fibrogenesis, and osteogenesis.
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Affiliation(s)
- Hui Li
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Stomatology, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Jingjing Sun
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Hefeng Yang
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Dental Research, The Affiliated Stomatological Hospital of Kunming Medical University, Kunming, China
| | - Xue Han
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xiangyou Luo
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - LiJun Liao
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Bo Yang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Tian Zhu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Fangjun Huo
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Weihua Guo
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Weidong Tian
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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23
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Eltan M, Alavanda C, Yavas Abali Z, Ergenekon P, Yalındag Ozturk N, Sakar M, Dagcinar A, Kirkgoz T, Kaygusuz SB, Gokdemir Y, Elcioglu HN, Guran T, Bereket A, Ata P, Turan S. A Rare Cause of Hypophosphatemia: Raine Syndrome Changing Clinical Features with Age. Calcif Tissue Int 2020; 107:96-103. [PMID: 32337609 PMCID: PMC7222149 DOI: 10.1007/s00223-020-00694-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 04/11/2020] [Indexed: 11/29/2022]
Abstract
Raine Syndrome (RS) is caused by biallelic loss-of-function mutations in FAM20C gene and characterized by hypophosphatemia, typical facial and skeletal features. Subperiosteal bone formation and generalized osteosclerosis are the most common radiological findings. Here we present a new case with RS. A 9-month-old male patient on a home-type ventilator was referred for hypophosphatemia. He was born with a weight of 3800 g to non-consanguineous parents. Prenatal ultrasound had demonstrated nasal bone agenesis. A large anterior fontanel, frontal bossing, exophthalmos, hypoplastic nose, high arched palate, low set ears, triangular mouth, and corneal opacification were detected on physical examination. Serial skeletal X-rays revealed diffuse osteosclerosis at birth which was gradually decreased by the age of 5 months with subperiosteal undermineralized bone formation and medullary space of long bone could be distinguishable with bone-within-a-bone appearance. At 9 months of age, hand X-ray revealed cupping of the ulna with loose radial bone margin with minimal fraying and osteopenia. Cranial computed tomography scan showed bilateral periventricular calcification and hydrocephalus in progress. The clinical, laboratory, and radiological examinations were consistent with RS. Molecular analyses revealed a compound heterozygous mutation in FAM20C gene (a known pathogenic mutation, c.1645C > T, p.Arg549Trp; and a novel c.863 + 5 G > C variant). The patient died due to respiratory failure at 17 months of age. This case allowed us to demonstrate natural progression of skeletal features in RS. Furthermore, we have described a novel FAM20C variant causing RS. Previous literature on RS is also reviewed.
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Affiliation(s)
- Mehmet Eltan
- Department of Pediatric Endocrinology and Diabetes, Marmara University School of Medicine, Istanbul, Turkey
| | - Ceren Alavanda
- Department of Medical Genetics, Marmara University School of Medicine, Istanbul, Turkey
| | - Zehra Yavas Abali
- Department of Pediatric Endocrinology and Diabetes, Marmara University School of Medicine, Istanbul, Turkey
| | - Pinar Ergenekon
- Department of Pediatric Chest Disease, Marmara University School of Medicine, Istanbul, Turkey
| | - Nilufer Yalındag Ozturk
- Department of Pediatric Intensive Care Unit, Marmara University School of Medicine, Istanbul, Turkey
| | - Mustafa Sakar
- Department of Pediatric Neurosurgery, Marmara University School of Medicine, Istanbul, Turkey
| | - Adnan Dagcinar
- Department of Pediatric Neurosurgery, Marmara University School of Medicine, Istanbul, Turkey
| | - Tarik Kirkgoz
- Department of Pediatric Endocrinology and Diabetes, Marmara University School of Medicine, Istanbul, Turkey
| | - Sare Betul Kaygusuz
- Department of Pediatric Endocrinology and Diabetes, Marmara University School of Medicine, Istanbul, Turkey
| | - Yasemin Gokdemir
- Department of Pediatric Chest Disease, Marmara University School of Medicine, Istanbul, Turkey
| | - Huriye Nursel Elcioglu
- Department of Pediatric Genetics, Marmara University School of Medicine, Istanbul, Turkey
| | - Tulay Guran
- Department of Pediatric Endocrinology and Diabetes, Marmara University School of Medicine, Istanbul, Turkey
| | - Abdullah Bereket
- Department of Pediatric Endocrinology and Diabetes, Marmara University School of Medicine, Istanbul, Turkey
| | - Pinar Ata
- Department of Medical Genetics, Marmara University School of Medicine, Istanbul, Turkey
| | - Serap Turan
- Department of Pediatric Endocrinology and Diabetes, Marmara University School of Medicine, Istanbul, Turkey.
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24
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Promoting Osseointegration of Dental Implants in Dog Maxillary Sinus Floor Augmentation Using Dentin Matrix Protein 1-Transduced Bone Marrow Stem Cells. Tissue Eng Regen Med 2020; 17:705-715. [PMID: 32588341 DOI: 10.1007/s13770-020-00277-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 04/29/2020] [Accepted: 05/22/2020] [Indexed: 10/24/2022] Open
Abstract
BACKGROUND Beta-tricalcium phosphate (β-TCP) has been employed successfully as a synthetic graft material in maxillary sinus floor augmentation (MSFA) for placing dental implants. However, the lack of osteogenic and osteoinductive properties of this substitute invariably results in bone regeneration of low quality and quantity. The purpose of this study was to determine whether loading dentin matrix protein-1 (DMP1) gene-modified bone marrow mesenchymal stem cells (BMSCs) onto β-TCP promoted bone regeneration and osteointegration of dental implants in MSFA of dogs. METHODS BMSCs were transduced with a lentiviral vector overexpressing the DMP1 gene (Lenti-DMP1) and with a lentiviral vector overexpressing enhanced green fluorescent protein (Lenti-EGFP) in vitro and were loaded into β-TCP scaffolds for autologous sinus grafting. Beagles received bilateral MSFA with four biomaterials (① Lenti-DMP1-transduced BMSCs/β-TCP, ② Lenti-EGFP-transduced BMSCs/β-TCP, ③ BMSCs/β-TCP, ④ β-TCP) and simultaneous implant placement at each sinus. Twelve weeks post operation, the maxillae were explanted, and every sinus was evaluated by radiographic observation, micro-CT and histological analysis. The osteogenic outcomes of bone regeneration and osseointegration were compared between the four groups. RESULTS The sinuses grafted with Lenti-DMP1-transduced BMSCs/β-TCP constructs presented a significantly higher increase in compact radiopaque area, higher local bone mineral densities, greater bone-implant contact and greater bone density when compared to other three groups. CONCLUSION These results demonstrated that combinations of β-TCP and DMP1 gene-modified BMSCs could be used to construct tissue-engineered bone to enhance mineralization of the regenerated bone and osseointegration of dental implants in MSFA.
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Abstract
The tooth provides an excellent system for deciphering the molecular mechanisms of organogenesis, and has thus been of longstanding interest to developmental and stem cell biologists studying embryonic morphogenesis and adult tissue renewal. In recent years, analyses of molecular signaling networks, together with new insights into cellular heterogeneity, have greatly improved our knowledge of the dynamic epithelial-mesenchymal interactions that take place during tooth development and homeostasis. Here, we review recent progress in the field of mammalian tooth morphogenesis and also discuss the mechanisms regulating stem cell-based dental tissue homeostasis, regeneration and repair. These exciting findings help to lay a foundation that will ultimately enable the application of fundamental research discoveries toward therapies to improve oral health.
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Affiliation(s)
- Tingsheng Yu
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, CA 94143, USA
| | - Ophir D Klein
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, CA 94143, USA
- Department of Pediatrics and Institute for Human Genetics, University of California, San Francisco, CA 94143, USA
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26
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Saito K, Nakatomi M, Ohshima H. Dentin Matrix Protein 1 Compensates for Lack of Osteopontin in Regulating Odontoblastlike Cell Differentiation after Tooth Injury in Mice. J Endod 2019; 46:89-96. [PMID: 31740066 DOI: 10.1016/j.joen.2019.10.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 09/24/2019] [Accepted: 10/02/2019] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Although dentin matrix protein 1 (DMP1) and osteopontin (OPN) act as substrates and signaling molecules for odontoblastlike cell differentiation after tooth injury, the mutual interaction between these proteins in the mechanism of odontoblastlike cell differentiation remains to be clarified. This study aimed to elucidate the role of DMP1 and OPN in regulating odontoblastlike cell differentiation after tooth injury. METHODS A groove-shaped cavity was prepared on the mesial surface of the upper first molars in wild-type and Opn knockout (KO) mice. The demineralized paraffin sections were processed for immunohistochemistry for nestin and DMP1 and in situ hybridization for Dmp1. For the in vitro assay, the experiments of organ culture for evaluating dentin-pulp complex regeneration using small interfering RNA treatment were performed. RESULTS Once preexisting odontoblasts died, nestin-positive newly differentiated odontoblastlike cells were arranged along the pulp-dentin border and began to express DMP1/Dmp1. In Opn KO mice, the expression of DMP1/Dmp1 was up-regulated compared with that of wild-type mice. The in vitro assay showed that the gene suppression of Dmp1 by small interfering RNA showed a tendency to decrease the differentiation rate of odontoblastlike cells from 70.1% to 52.2% in wild-type teeth. In addition, the suppression of Dmp1 in Opn KO teeth tended to lead to the inhibition of odontoblastlike cell differentiation. CONCLUSIONS These results suggest that the expression of Dmp1 is up-regulated in Opn KO mice both in vivo and in vitro, and DMP1 compensates for the lack of OPN in regulating odontoblastlike cell differentiation after tooth injury.
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Affiliation(s)
- Kotaro Saito
- Division of Anatomy and Cell Biology of the Hard Tissue, Department of Tissue Regeneration and Reconstruction, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Mitsushiro Nakatomi
- Division of Anatomy, Department of Health Promotion, Kyushu Dental University, Kitakyushu, Japan
| | - Hayato Ohshima
- Division of Anatomy and Cell Biology of the Hard Tissue, Department of Tissue Regeneration and Reconstruction, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
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Chen X, Chen Y, Hou Y, Song P, Zhou M, Nie M, Liu X. Modulation of proliferation and differentiation of gingiva‑derived mesenchymal stem cells by concentrated growth factors: Potential implications in tissue engineering for dental regeneration and repair. Int J Mol Med 2019; 44:37-46. [PMID: 31017269 PMCID: PMC6559294 DOI: 10.3892/ijmm.2019.4172] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Accepted: 04/10/2019] [Indexed: 12/16/2022] Open
Abstract
The aim of the present study was to evaluate the proliferation and osteogenic differentiation ability of gingiva-derived mesenchymal stem cells (GMSCs) cultured with different concentrations of concentrated growth factors (CGF). GMSCs were isolated from gingival connective tissues and characterized by flow cytometry, immunofluorescence staining and immunohistochemical staining. Cell proliferation activity was determined by the MTT assay, and the effect of CGF on MCSCs was detected with the Cell Counting Kit (CCK)-8 assay. Mineralization induction was evaluated by alkaline phosphatase (ALP)-positive cell staining and mineralized nodule formation assay. Dentin matrix acidic phosphoprotein (DMP)1, dentin sialophosphoprotein (DSPP), bone morphogenetic protein (BMP)2 and runt-related transcription factor (RUNX)2 mRNA and protein expression were evaluated by reverse transcription-quantitative polymerase chain reaction (RT-qPCR) analysis and western blotting. The flow cytometry, immunofluorescence staining and immunohistochemical staining results indicated that the cultured cells were GMSCs. The MTT assay results revealed that the third-generation gingival stem cells exhibited the highest proliferative capacity, and the CCK-8 results indicated that 10% CGF achieved the most prominent promotion of GMSC proliferation. ALP activity analysis and mineralized nodule assay demonstrated that CGF may successfully induce osteogenic differentiation of GMSCs, whereas RT-qPCR and western blot analyses demonstrated that CGF is involved in the differentiation of GMSCs by regulating the expression of DMP1, DSPP, BMP2 and RUNX2 (P<0.05). In conclusion, CGF were demonstrated to promote the proliferation and osteogenic differentiation of GMSCs. Therefore, CGF may be applied in tissue engineering for tooth regeneration and repair.
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Affiliation(s)
- Xiao Chen
- Department of Orthodontics, Mianyang Stomatological Hospital, Mianyang, Sichuan 621000, P.R. China
| | - Yuhe Chen
- Laboratory of Oral and Maxillofacial Reconstruction and Regeneration, Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Yali Hou
- Department of Oral Pathology, College and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, Hebei 050000, P.R. China
| | - Peng Song
- Department of Oral Pathology, College and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, Hebei 050000, P.R. China
| | - Minyue Zhou
- Laboratory of Oral and Maxillofacial Reconstruction and Regeneration, Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Minhai Nie
- Laboratory of Oral and Maxillofacial Reconstruction and Regeneration, Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Xuqian Liu
- Laboratory of Oral and Maxillofacial Reconstruction and Regeneration, Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
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Tang J, Saito T. iMatrix-511 Stimulates the Proliferation and Differentiation of MDPC-23 Cells into Odontoblastlike Phenotype. J Endod 2019; 44:1367-1375. [PMID: 30144832 DOI: 10.1016/j.joen.2018.05.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 05/23/2018] [Accepted: 05/31/2018] [Indexed: 10/28/2022]
Abstract
INTRODUCTION iMatrix-511 is a novel integrin-binding fragment derived from laminin-511. Previous studies showed its superiority as a culture substrate for xeno-free culture and maintenance of pluripotency in stem cells. However, its effects in the dental field remain largely unknown. The aim of the present study was to unravel the in vitro effects of iMatrix-511 in comparison with vitronectin (VN). METHODS Biochemical assays were performed in vitro in MDPC-23 cells. The optimal coating density for 2 proteins was determined using the cell counting kit-8. To evaluate cell proliferation to both proteins, MDPC-23 cells were directly seeded onto the iMatrix-511 or VN-modified polystyrene and analyzed by the cell counting kit-8. The phenotype of cells seeded on iMatrix-511 and VN was characterized. Phenotypic characterization included real-time reverse-transcription polymerase chain reaction and alizarin red staining. RESULTS The optimal coating density for iMatrix-511 and VN was determined to be 1 μg/cm2 and 0.25 μg/cm2, respectively. Cells cultured on iMatrix-511 showed higher cell proliferative activity than the noncoated control and VN on days 1, 2, and 4. Cell morphology observation revealed MDPC-23 cells attach preferentially to iMatrix-511 and start to spread as early as 1 hour after inoculation. MDPC-23 cells exhibited more potent odontogenic differentiation on iMatrix-511 than the control and VN as shown by the marked enhancement of dentin matrix protein 1 and dentin sialophosphoprotein messenger RNA expression. Although both proteins showed more mineralized nodule formation than the control, iMatrix-511 remained to be the one that elicited stronger calcific deposition. CONCLUSIONS iMatrix-511 supported the proliferation and acquisition of odontogenic cell phenotype in vitro, rendering this novel material a potential candidate for dentin regeneration.
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Affiliation(s)
- Jia Tang
- Division of Biochemistry, Department of Oral Biology, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan.
| | - Takashi Saito
- Division of Clinical Cariology and Endodontology, Department of Oral Rehabilitation, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan
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Siddiqui YD, Omori K, Ito T, Yamashiro K, Nakamura S, Okamoto K, Ono M, Yamamoto T, Van Dyke TE, Takashiba S. Resolvin D2 Induces Resolution of Periapical Inflammation and Promotes Healing of Periapical Lesions in Rat Periapical Periodontitis. Front Immunol 2019; 10:307. [PMID: 30863409 PMCID: PMC6399419 DOI: 10.3389/fimmu.2019.00307] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 02/06/2019] [Indexed: 12/19/2022] Open
Abstract
Periapical periodontitis results from pulpal infection leading to pulpal necrosis and resorption of periapical bone. The current treatment is root canal therapy, which attempts to eliminate infection and necrotic tissue. But, in some cases periapical inflammation doesn't resolve even after treatment. Resolvins belongs to a large family of specialized pro-resolving lipid mediators that actively resolves inflammation signaling via specific receptors. Resolvin D2 (RvD2), a metabolite of docosahexaenoic acid (DHA), was tested as an intracanal medicament in rats in vivo. Mechanism was evaluated in rat primary dental pulp cells (DPCs) in vitro. The results demonstrate that RvD2 reduces inflammatory cell infiltrate, periapical lesion size, and fosters pulp like tissue regeneration and healing of periapical lesion. RvD2 enhanced expression of its receptor, GPR18, dentin matrix acidic phosphoprotein 1 (DMP1) and mineralization in vivo and in vitro. Moreover, RvD2 induces phosphorylation of Stat3 transcription factor in dental pulp cells. We conclude that intracanal treatment with RvD2 resolves inflammation and promoting calcification around root apex and healing of periapical bone lesions. The data suggest that RvD2 induces active resolution of inflammation with pulp-like tissue regeneration after root canal infection and thus maybe suitable for treating periapical lesions.
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Affiliation(s)
- Yasir Dilshad Siddiqui
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kazuhiro Omori
- Department of Periodontics and Endodontics, Okayama University Hospital, Okayama, Japan
| | - Takashi Ito
- Center for Innovative Clinical Medicine, Okayama University Hospital, Okayama, Japan
| | - Keisuke Yamashiro
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Shin Nakamura
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kentaro Okamoto
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Mitsuaki Ono
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Tadashi Yamamoto
- Department of Periodontics and Endodontics, Okayama University Hospital, Okayama, Japan
| | - Thomas E Van Dyke
- Center for Clinical and Translational Research, The Forsyth Institute, Cambridge, MA, United States
| | - Shogo Takashiba
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Widbiller M, Bucchi C, Rosendahl A, Spanier G, Buchalla W, Galler KM. Isolation of primary odontoblasts: Expectations and limitations. AUST ENDOD J 2019; 45:378-387. [DOI: 10.1111/aej.12335] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/03/2019] [Indexed: 01/06/2023]
Affiliation(s)
- Matthias Widbiller
- Department of Conservative Dentistry and Periodontology University Hospital Regensburg Regensburg Germany
| | - Cristina Bucchi
- Department of Pathology and Experimental Therapy Universitat de Barcelona Barcelona Spain
- Department of Integral Adult Dentistry Research Centre for Dental Sciences Universidad de La Frontera Temuco Chile
| | - Andreas Rosendahl
- Department of Conservative Dentistry and Periodontology University Hospital Regensburg Regensburg Germany
| | - Gerrit Spanier
- Department of Oral‐ and Maxillofacial Surgery University Hospital Regensburg Regensburg Germany
| | - Wolfgang Buchalla
- Department of Conservative Dentistry and Periodontology University Hospital Regensburg Regensburg Germany
| | - Kerstin M. Galler
- Department of Conservative Dentistry and Periodontology University Hospital Regensburg Regensburg Germany
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Lin W, Gao L, Jiang W, Niu C, Yuan K, Hu X, Ma R, Huang Z. The role of osteomodulin on osteo/odontogenic differentiation in human dental pulp stem cells. BMC Oral Health 2019; 19:22. [PMID: 30670012 PMCID: PMC6341608 DOI: 10.1186/s12903-018-0680-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 11/27/2018] [Indexed: 01/09/2023] Open
Abstract
Background Extracellular matrix secretion and odontoblastic differentiation in human dental pulp stem cells (hDPSCs) are the cellular bases for reparative dentinogenesis. Osteomodulin (OMD) is a member of the small leucine-rich proteoglycan family distributed in the extracellular matrix but little is known about its role in osteo/odontogenic differentiation. The objective of this study was to investigate the role of OMD during osteo/odontoblastic differentiation of hDPSCs. Methods hDPSCs were selected using immune-magnetic beads and their capability of multi-differentiation was identified. OMD knockdown was achieved using short hairpin RNA (shRNA) lentivirus and was confirmed by western blot. Gene expression was measured by real-time qPCR and osteo/odontoblastic differentiation of hDPSCs was determined by alizarin red S staining. Results Compared with uninduced cells, the transcription of OMD was up-regulated by 35-fold at the late stage of osteo/odontogenic differentiation. shRNA-mediated gene silencing of OMD decreased the expression of odontoblastic genes, such as alkaline phosphatase (ALP), dentin matrix acidic phosphoprotein 1 (DMP1) and dentin sialophosphoprotein (DSPP). Besides, knockdown of OMD attenuated the mineralized nodules formation induced by osteo/odontogenic medium. Conclusions These results implied that OMD may play a pivotal role in modulating the osteo/odontoblastic differentiation of hDPSCs.
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Affiliation(s)
- Wenzhen Lin
- Department of Endodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Li Gao
- Department of Endodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Wenxin Jiang
- Department of Endodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Chenguang Niu
- Department of Endodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Keyong Yuan
- Department of Endodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Xuchen Hu
- Department of Endodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Rui Ma
- Department of Endodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China. .,National Clinical Research Center for Oral Diseases, Shanghai, China. .,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China.
| | - Zhengwei Huang
- Department of Endodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China. .,National Clinical Research Center for Oral Diseases, Shanghai, China. .,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China.
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Huang X, Liu F, Hou J, Chen K. Inflammation-induced overexpression of microRNA-223-3p regulates odontoblastic differentiation of human dental pulp stem cells by targeting SMAD3. Int Endod J 2018; 52:491-503. [PMID: 30368846 DOI: 10.1111/iej.13032] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 10/22/2018] [Indexed: 02/06/2023]
Abstract
AIM To profile miRNA expression between inflamed and healthy human dental pulp tissues and to investigate how the upregulation of miR-223-3p in the inflamed pulp tissue regulates odontoblast differentiation and regeneration. METHODOLOGY Microarray analysis was used to identify differences in miRNA expression patterns between healthy and inflamed pulp tissue. The results were validated using quantitative real-time PCR. To determine the effect of miR-223-3p on odontoblast differentiation, miR-223-3p was overexpressed in human dental pulp stem cells (DPSCs), which were cultured in mineralizing induction medium (to induce odontoblast differentiation). To identify the target genes of miR-223-3p, an SABiosciences Human Osteogenesis PCR Array, combined with bioinformatics, was used. Furthermore, a dual-luciferase reporter assay and a small interfering RNA (siRNA) experiment were used to confirm the relationship between miR-223-3p and its target gene. Statistical analysis was performed using the Student's t-test or one-way analysis of variance (anova); P < 0.05 was considered statistically significant. RESULTS Seventy-nine miRNAs were significantly differentially expressed (fold change >2.0; P < 0.05) between the two tissues. In particular, miR-223-3p was markedly upregulated in inflamed dental pulp. Overexpression of miR-223-3p in DPSCs significantly increased the protein levels of dentine sialophosphoprotein (DSPP) and dentine matrix protein 1 (DMP-1) (P < 0.05). However, the SMAD family member 3 (SMAD3) protein level was significantly lower than in control DPSCs (P < 0.05). Bioinformatics and the dual-luciferase assay reporter assay indicated that Smad3 was a potential target of miR-223-3p. Knockdown of Smad3 in DPSCs subjected to mineralization induction resulted in detection of DSPP and DMP-1 earlier than in control DPSCs, and it increased the protein level of alkaline phosphatase (ALP), thereby promoting odontoblast differentiation. CONCLUSIONS miR-223-3p is implicated in the regulation of odontoblast differentiation, which may be involved in the process of pulpitis repair.
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Affiliation(s)
- X Huang
- Department of Stomatology, Guangzhou Women and Children's Medical Center, Guangzhou, China
| | - F Liu
- International Medical Center, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - J Hou
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - K Chen
- Department of Stomatology, Guangzhou Women and Children's Medical Center, Guangzhou, China.,Stomatological Hospital, Southern Medical University, Guangzhou, China
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Tsukune N, Naito M, Ohashi A, Ninomiya T, Sato S, Takahashi T. Forced expression of mouse progerin attenuates the osteoblast differentiation interrupting β-catenin signal pathway in vitro. Cell Tissue Res 2018; 375:655-664. [PMID: 30284086 DOI: 10.1007/s00441-018-2930-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 09/18/2018] [Indexed: 02/01/2023]
Abstract
Nuclear protein, lamin A, which is a component of inner membrane on nucleoplasm, plays a role in nuclear formation and cell differentiation. The expression of mutated lamin A, termed progerin, causes a rare genetic aging disorder, Hutchinson-Gilford progeria syndrome, which shows abnormal bone formation with the decrease in a number of osteoblasts and osteocytes. However, exact molecular mechanism how progerin exerts depressive effects on osteogenesis has not been fully understood. Here, we created mouse lamin A dC50 cDNA encoding progerin that lacks 50 amino acid residues at C-terminus, transfected it in mouse preosteoblast-like MC3T3-E1 cells, and examined the changes in osteoblast phenotype. When lamin A dC50-expressed cells were cultured with differentiation-inductive medium, alkaline phosphatase (ALP) activity and mRNA levels of major osteoblast markers, type I collagen (Col1), bone sialoprotein (BSP), dentine matrix protein 1 (DMP1), and Runx2 were significantly decreased, and no mineralized nodules were detected as seen in control cells expressing empty vector. In the culture with mineralization-inductive medium, mRNA levels of BSP, osteocalcin, DMP1, Runx2, and osterix were strongly decreased parallel with loss of mineralization in lamin A dC50-expressed cells, while mineralized nodules appear at 21 days in control cells. Furthermore, lamin A dC50 expression was depressed nuclear localization of β-catenin with the decrease of GSK-3β phosphorylation level. These results suggest that lamin A dC50 depresses osteoblast differentiation in both early and late stages, and it negatively regulates β-catenin activity interacting with GSK-3β in cytoplasm.
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Affiliation(s)
- Naoya Tsukune
- Division of Applied Oral Science, Nihon University Graduate School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan
| | - Masako Naito
- Department of Anatomy, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan
- Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan
| | - Akiko Ohashi
- Department of Anatomy, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan
- Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan
| | - Tadashi Ninomiya
- Department of Anatomy, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan
- Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan
| | - Shuichi Sato
- Department of Periodontology, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan
- Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan
| | - Tomihisa Takahashi
- Department of Anatomy, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan.
- Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan.
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Cai S, Zhang W, Tribble G, Chen W. Reactions of human dental pulp cells to capping agents in the presence or absence of bacterial exposure. J Oral Sci 2018; 59:621-627. [PMID: 29279572 DOI: 10.2334/josnusd.16-0625] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
An ideal pulp-capping agent needs to have good biocompatibility and promote reparative dentinogenesis. Although the effects of capping agents on healthy pulp are known, limited data regarding their effects on bacterial contaminated pulp are available. This study aimed to evaluate the reaction of contaminated pulps to various capping agents to assist clinicians in making informed decisions. Human dental pulp (HDP) cell cultures were developed from extracted human molars. The cells were exposed to a bacterial cocktail comprising Porphyromonas gingivalis, Prevotella intermedia, and Streptococcus gordonii before being cocultured with capping agents such as mineral trioxide aggregate (MTA) Portland cement (PC), and Dycal. HDP cell proliferation was assayed by MTS colorimetric cell proliferation assay, and its differentiation was evaluated by real-time PCR for detecting alkaline phosphatase, dentin sialophosphoprotein, and osteocalcin expressions. MTA and PC had no apparent effect, whereas Dycal inhibited HDP cell proliferation. PC stimulated HDP cell differentiation, particularly when they were exposed to bacteria. MTA and Dycal inhibited differentiation, regardless of bacterial infection. In conclusion, PC was the most favorable agent, followed by MTA, and Dycal was the least favorable agent for supporting the functions of bacterial compromised pulp cells.
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Affiliation(s)
- Shiwei Cai
- Department of Endodontics, University of Texas School of Dentistry at Houston
| | - Wenjian Zhang
- Department of Diagnostic and Biomedical Sciences, University of Texas School of Dentistry at Houston
| | - Gena Tribble
- Department of Periodontics and Dental hygiene, University of Texas School of Dentistry at Houston
| | - Wei Chen
- Department of Endodontics, University of Texas School of Dentistry at Houston
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Guo X, Riobo-Del Galdo NA, Kim EJ, Grant GR, Manning DR. Overlap in signaling between Smoothened and the α subunit of the heterotrimeric G protein G13. PLoS One 2018; 13:e0197442. [PMID: 29763457 PMCID: PMC5953476 DOI: 10.1371/journal.pone.0197442] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 05/02/2018] [Indexed: 01/20/2023] Open
Abstract
The Hedgehog family of morphogens has long been known to utilize, through the 7-transmembrane protein Smoothened (Smo), the heterotrimeric G protein Gi in both canonical and noncanonical forms of signaling. Other G proteins, while not specifically utilized by Smo, may nonetheless provide access to some of the events controlled by it. We reported several years ago that the G protein G13 activates one or more forms of the Gli family of transcription factors. While the Gli transcription factors are well known targets for Smo, the uncertain mechanism of activation by G13 and the identity of the targeted Gli(s) limited predictions as to the extent to which G13 might mimic Smo's actions. We evaluate here the potential for overlap in G13 and Smo signaling using C3H10T1/2 and 3T3-L1 cells as models of osteogenesis and adipogenesis, respectively. We find in C3H10T1/2 cells that a constitutively active form of Gα13 (Gα13QL) increases Gli1 mRNA, as does a constitutively active form of Smo (SmoA1). We find as well that Gα13QL induces alkaline phosphatase activity, a marker of osteogenesis, albeit the induction is far less substantial than that achieved by SmoA1. In 3T3-L1 cells both Gα13QL and SmoA1 markedly suppress adipogenic differentiation as determined by triglyceride accumulation. RNA sequencing reveals that Gα13QL and SmoA1 regulate many of the same genes but that quantitative and qualitative differences exist. Differences also exist, we find, between SmoA1 and purmorphamine, an agonist for Smo. Therefore, while comparisons of constitutively active proteins are informative, extrapolations to the setting of agonists require care.
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Affiliation(s)
- Xueshui Guo
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Natalia A. Riobo-Del Galdo
- Leeds Institute of Cancer and Pathology and School of Molecular and Cellular Biology, University of Leeds, United Kingdom
| | - Eun Ji Kim
- Institute of Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Gregory R. Grant
- Institute of Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
- Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - David R. Manning
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
- * E-mail:
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Yang H, Shu YX, Wang LY, Zou WL, Guo LY, Shao MY, Gao QH, Hu T. Effect of cyclic uniaxial compressive stress on human dental pulp cells in vitro. Connect Tissue Res 2018; 59:255-262. [PMID: 28816569 DOI: 10.1080/03008207.2017.1367773] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
PURPOSE Teeth are exposed to various forces during functional and parafunctional movements. These processes inevitably affect the dental pulp, and the mechanism of these influences has been the subject of many previous studies using different apparatuses and obtaining different results. In this study, we aimed to investigate the effects of compressive stress on the proliferation and differentiation of human dental pulp cells (hDPCs). MATERIALS AND METHODS A four-point bending strain system was adopted to apply low-density cyclic uniaxial compressive stress (2000 microstrain, 0.5 Hz) to hDPCs for 1.5, 3, 6, 12, and 24 h. The cell cycle progression and mRNA expression of differentiation-related genes (BMP2, ALP, DMP1, DSPP, COL I) were then examined to investigate the proliferation and differentiation of hDPCs. RESULTS The results showed that cyclic compressive stress changed the morphology of hDPCs after 12 and 24 h of mechanical loading; cell cycle progression was promoted, especially in the 24-h group (p < 0.05). The expression of BMP2 was significantly upregulated after 3 and 6 h of mechanical loading but declined in the 12- and 24-h groups, whereas the expression levels of DMP1 and DSPP were significantly upregulated in the 12- and 24-h loading groups (p < 0.05). CONCLUSIONS Dental pulp cells were sensitive to compressive stress, especially after 12 and 24 h of applied force. Proliferation and odontogenic differentiation were significantly promoted in this in vitro model.
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Affiliation(s)
- Hui Yang
- a State Key Laboratory of Oral Diseases, West China Hospital of Stomatology , Sichuan University , Chengdu , P. R . China
| | - Yi-Xuan Shu
- a State Key Laboratory of Oral Diseases, West China Hospital of Stomatology , Sichuan University , Chengdu , P. R . China
| | - Lin-Yan Wang
- a State Key Laboratory of Oral Diseases, West China Hospital of Stomatology , Sichuan University , Chengdu , P. R . China
| | - Wen-Ling Zou
- a State Key Laboratory of Oral Diseases, West China Hospital of Stomatology , Sichuan University , Chengdu , P. R . China
| | - Li-Yang Guo
- a State Key Laboratory of Oral Diseases, West China Hospital of Stomatology , Sichuan University , Chengdu , P. R . China
| | - Mei-Ying Shao
- a State Key Laboratory of Oral Diseases, West China Hospital of Stomatology , Sichuan University , Chengdu , P. R . China
| | - Qian-Hua Gao
- a State Key Laboratory of Oral Diseases, West China Hospital of Stomatology , Sichuan University , Chengdu , P. R . China.,b Department of Stomatology , Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital , Chengdu , China
| | - Tao Hu
- a State Key Laboratory of Oral Diseases, West China Hospital of Stomatology , Sichuan University , Chengdu , P. R . China
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Periostin, dentin matrix protein 1 and P2rx7 ion channel in human teeth and periodontal ligament. Ann Anat 2018; 216:103-111. [DOI: 10.1016/j.aanat.2017.12.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 11/27/2017] [Accepted: 12/01/2017] [Indexed: 02/06/2023]
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38
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Görögh T, Quabius ES, Georgitsis A, Hoffmann M, Lippross S. Sequential activation of the AKT pathway in human osteoblasts treated with Oscarvit: a bioactive product with positive effect both on skeletal pain and mineralization in osteoblasts. BMC Musculoskelet Disord 2017; 18:500. [PMID: 29183350 PMCID: PMC5706336 DOI: 10.1186/s12891-017-1860-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 11/20/2017] [Indexed: 11/10/2022] Open
Abstract
Background Oscarvit (OSC) is an in-house preparation consisting of calcium, magnesium, phosphorus, strontium, Vitamin D, and eggshell membrane hydrolysate containing naturally occurring glycosaminoglycans and sulfated glycoproteins. OSC has been used both in an open-label human study and in vitro in osteoblasts. Methods Fifteen patients divided into three groups received oral OSC 0.6 g three times daily for 20 days. The main outcome measures were regional skeletal pain over the treatment period. For the in vitro experiments eight primary human osteoblasts cultures were established from trabecular bone, six of them from the femoral head, and two from the tibia. Cells were cultured for five to 20 days in the presence of 20 μg/ml OSC. Immunocytochemistry and RT-PCR were used to detect molecular alterations involved in the mineralization process. Calcium concentration was measured by means of a colorimetric assay and cell viability was analyzed using the LDH cytotoxicity assay. To investigate whether the osteoblasts response to OSC is associated with signaling processes the ERK1/2 and AKT signal transduction pathways were analyzed. Results Open label human study: OSC, 0.6 g three times daily, resulted in a significant positive effect on pain alleviation of 42% after 5 days (p < 0.001), 57% after 10 days and 68% after 20 days (p < 0.0001; for both time points), with no side-effects being reported. In vitro analysis: In osteoblasts, growing in OSC-supplemented media significant overexpression of bone γ-carboxylglutamic acid-containing protein, secreted phosphoprotein-1, integrin binding sialoprotein, and dentin matrix phosphoprotein genes could be detected when compared to control osteoblasts grown in the absence of OSC. Moreover, OSC-treated osteoblasts produced over the study period vast extracellular calcium deposits without any loss of cellular integrity or signs of cellular toxicity. In addition OSC promotes osteoblast differentiation and activates the AKT signaling pathway. Conclusion This open label study provides preliminary evidence of the efficacy of OSC. Despite the limitations (small heterogeneous patient group) the findings can be viewed as a necessary investigation that supports further clinical trials with a double-blind controlled design. Experiments at cellular and molecular level provide supplementary information about OSC that increases mineralization in osteoblasts and activation of the AKT pathway. Trial registration DRKS00013233, 06th November 2017, retrospectively registered.
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Affiliation(s)
- Tibor Görögh
- Department of Otorhinolaryngology, Head and Neck Surgery, Christian-Albrechts-University Kiel, Germany, Arnold-Heller-Str. 3 House 27, 24105, Kiel, Germany.
| | - Elgar S Quabius
- Department of Otorhinolaryngology, Head and Neck Surgery, Christian-Albrechts-University Kiel, Germany, Arnold-Heller-Str. 3 House 27, 24105, Kiel, Germany.,Institute of Immunology, Christian-Albrechts-University Kiel, Germany, Arnold-Heller-Str. 3 House 17, 24105, Kiel, Germany
| | - Alexander Georgitsis
- Department of Otorhinolaryngology, Head and Neck Surgery, Christian-Albrechts-University Kiel, Germany, Arnold-Heller-Str. 3 House 27, 24105, Kiel, Germany
| | - Markus Hoffmann
- Department of Otorhinolaryngology, Head and Neck Surgery, Christian-Albrechts-University Kiel, Germany, Arnold-Heller-Str. 3 House 27, 24105, Kiel, Germany
| | - Sebastian Lippross
- Department of Orthopaedic Trauma Surgery, Christian-Albrechts-University Kiel, Germany, Arnold-Heller-Str. 3 House 18, 24105, Kiel, Germany
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39
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Fahmy SH, Hassanien EES, Nagy MM, El Batouty KM, Mekhemar M, Fawzy El Sayed K, Hassanein EH, Wiltfang J, Dörfer C. Investigation of the regenerative potential of necrotic mature teeth following different revascularisation protocols. AUST ENDOD J 2017; 43:73-82. [DOI: 10.1111/aej.12210] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/25/2017] [Indexed: 01/09/2023]
Affiliation(s)
- Sarah Hossam Fahmy
- Endodontic Department; Faculty of Dentistry; Ain Shams University; Cairo Egypt
| | | | | | | | - Mohamed Mekhemar
- Universitatsklinikum Schleswig-Holstein; Christian-Albrechts University; Kiel Germany
| | - Karim Fawzy El Sayed
- Universitatsklinikum Schleswig-Holstein; Christian-Albrechts University; Kiel Germany
| | | | - Jörg Wiltfang
- Universitatsklinikum Schleswig-Holstein; Christian-Albrechts University; Kiel Germany
| | - Christof Dörfer
- Universitatsklinikum Schleswig-Holstein; Christian-Albrechts University; Kiel Germany
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40
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Alvarez M, Moura G, Machado M, Viana G, de Souza Costa C, Tjäderhane L, Nader H, Tersariol I, Nascimento F. PAR-1 and PAR-2 Expression Is Enhanced in Inflamed Odontoblast Cells. J Dent Res 2017; 96:1518-1525. [DOI: 10.1177/0022034517719415] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- M.M.P. Alvarez
- Department of Biochemistry, Molecular Biology Division, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | - G.E. Moura
- Department of Biochemistry, Molecular Biology Division, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | - M.F.M. Machado
- Interdisciplinary Center of Biochemistry Investigation (CIIB), University of Mogi das Cruzes, Mogi das Cruzes, Brazil
| | - G.M. Viana
- Department of Biochemistry, Molecular Biology Division, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | - C.A. de Souza Costa
- Department of Physiology and Pathology, Araraquara School of Dentistry, Univ Estadual Paulista–UNESP, São Paulo, Brazil
| | - L. Tjäderhane
- Department of Oral and Maxillofacial Diseases, University of Helsinki, and Helsinki University Hospital, Helsinki, Finland
- Research Unit of Oral Health Sciences and Medical Research Center Oulu (MRC Oulu), Oulu University Hospital and University of Oulu, Oulu, Finland
| | - H.B. Nader
- Department of Biochemistry, Molecular Biology Division, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | - I.L.S. Tersariol
- Department of Biochemistry, Molecular Biology Division, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | - F.D. Nascimento
- Interdisciplinary Center of Biochemistry Investigation (CIIB), University of Mogi das Cruzes, Mogi das Cruzes, Brazil
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41
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Healing response of rat pulp treated with an injectable keratin hydrogel. J Appl Biomater Funct Mater 2017; 15:e244-e250. [PMID: 28430345 PMCID: PMC6379890 DOI: 10.5301/jabfm.5000346] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/06/2017] [Indexed: 11/29/2022] Open
Abstract
Background Keratin has shown promising outcomes as a biomaterial due to its inherent
bioactivity, biocompatibility and regenerative effects. The effect of
keratin on repair and regeneration of dental tissues has never been studied
before. Current therapies to treat pulp tissues involve its replacement with
inert, synthetic materials that do not have a proper biological function,
leading to failure and tooth loss. This study aimed to develop a
biocompatible keratin hydrogel (KH) suitable for pulp therapies. Methods Keratins extracted from sheep wool were isolated, quantified and
reconstituted to form KH. Different concentrations of keratin gel suitable
for dental application were characterized by rheological analysis. The
optimized gel based on flow characteristics was studied further for
microstructure including porosity, percentage swelling ratio and contact
angle measurements, using analytical tools such as scanning electron
microscopy (SEM), micro-computed tomography and goniometer. To assess both
biocompatibility and pulpal response, KH was implanted into rat upper molar
teeth following partial pulpotomy. After 28 days, the tissue sections were
analyzed by histological and immunohistochemical methods to identify dentin
matrix protein 1 (DMP-1) formation and compared with control
(Ca(OH)2-treated) teeth. Results The results of the study demonstrated a viscous and injectable, porous,
dimensionally stable, hydrophilic and biocompatible gel that allowed pulp
healing to occur by a reparative response, with widespread DMP-1
expression. Conclusions The findings of this study indicate that keratins can be developed as a
biomaterial source for alternate biological treatment options for pulp
therapies.
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42
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Yu TT, Cui FZ, Meng QY, Wang J, Wu DC, Zhang J, Kou XX, Yang RL, Liu Y, Zhang YS, Yang F, Zhou YH. Influence of Surface Chemistry on Adhesion and Osteo/Odontogenic Differentiation of Dental Pulp Stem Cells. ACS Biomater Sci Eng 2017; 3:1119-1128. [PMID: 33429586 DOI: 10.1021/acsbiomaterials.7b00274] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Ting-Ting Yu
- Center
for Craniofacial Stem Cell Research and Regeneration, Department of
Orthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
| | - Fu-Zhai Cui
- School
of Materials Science and Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Qing-Yuan Meng
- School
of Materials Science and Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Juan Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - De-Cheng Wu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jin Zhang
- Division
of Engineering in Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
| | - Xiao-Xing Kou
- Center
for Craniofacial Stem Cell Research and Regeneration, Department of
Orthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
| | - Rui-Li Yang
- Center
for Craniofacial Stem Cell Research and Regeneration, Department of
Orthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
| | - Yan Liu
- Center
for Craniofacial Stem Cell Research and Regeneration, Department of
Orthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
| | - Yu Shrike Zhang
- Division
of Engineering in Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
| | - Fei Yang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yan-Heng Zhou
- Center
for Craniofacial Stem Cell Research and Regeneration, Department of
Orthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
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43
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Chen Z, Zhang Q, Wang H, Li W, Wang F, Wan C, Deng S, Chen H, Yin Y, Li X, Xie Z, Chen S. Klf5 Mediates Odontoblastic Differentiation through Regulating Dentin-Specific Extracellular Matrix Gene Expression during Mouse Tooth Development. Sci Rep 2017; 7:46746. [PMID: 28440310 PMCID: PMC5404268 DOI: 10.1038/srep46746] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 03/23/2017] [Indexed: 12/21/2022] Open
Abstract
Klf5, a member of the Krüppel-like transcription factor family, has essential roles during embryonic development, cell proliferation, differentiation, migration and apoptosis. This study was to define molecular mechanism of Klf5 during the odontoblastic differentiation. The expression of Klf5, odontoblast-differentiation markers, Dspp and Dmp1 was co-localized in odontoblastic cells at different stages of mouse tooth development and mouse dental papilla mesenchymal cells. Klf5 was able to promote odontoblastic differentiation and enhance mineral formation of mouse dental papilla mesenchymal cells. Furthermore, overexpression of Klf5 could up-regulate Dspp and Dmp1 gene expressions in mouse dental papilla mesenchymal cells. In silico analysis identified that several putative Klf5 binding sites in the promoter and first intron of Dmp1 and Dspp genes that are homologous across species lines. Electrophoretic mobility shift assay and chromatin immunoprecipitation analysis indicated that Klf5 bound to these motifs in vitro and in intact cells. The responsible regions of Dmp1 gene were located in the promoter region while effect of Klf5 on Dspp activity was in the first intron of Dspp gene. Our results identify Klf5 as an activator of Dmp1 and Dspp gene transcriptions by different mechanisms and demonstrate that Klf5 plays a pivotal role in odontoblast differentiation.
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Affiliation(s)
- Zhuo Chen
- Key Laboratory for Oral Biomedical Research of Zhejiang Province, Affiliated Hospital of Stomatology, Medical College, Zhejiang University, Hangzhou, China.,Department of Developmental Dentistry, Dental School, The University of Texas Health Science Center at San Antonio, San Antonio, United States of America
| | - Qi Zhang
- Department of Endodontics, School &Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Han Wang
- Shangyang Dental Clinic, Hangzhou, China
| | - Wentong Li
- Department of Developmental Dentistry, Dental School, The University of Texas Health Science Center at San Antonio, San Antonio, United States of America
| | - Feng Wang
- Department of Developmental Dentistry, Dental School, The University of Texas Health Science Center at San Antonio, San Antonio, United States of America
| | - Chunyan Wan
- Department of Developmental Dentistry, Dental School, The University of Texas Health Science Center at San Antonio, San Antonio, United States of America.,Department of Stomatology, Key Lab of Oral Clinical Medicine, the Affiliated Hospital of Qingdao University, College of Somatology, Qingdao University, Qingdao, China
| | - Shuli Deng
- Key Laboratory for Oral Biomedical Research of Zhejiang Province, Affiliated Hospital of Stomatology, Medical College, Zhejiang University, Hangzhou, China
| | - Hui Chen
- Key Laboratory for Oral Biomedical Research of Zhejiang Province, Affiliated Hospital of Stomatology, Medical College, Zhejiang University, Hangzhou, China
| | - Yixin Yin
- Department of Developmental Dentistry, Dental School, The University of Texas Health Science Center at San Antonio, San Antonio, United States of America
| | - Xiaoyan Li
- Department of Developmental Dentistry, Dental School, The University of Texas Health Science Center at San Antonio, San Antonio, United States of America
| | - Zhijian Xie
- Key Laboratory for Oral Biomedical Research of Zhejiang Province, Affiliated Hospital of Stomatology, Medical College, Zhejiang University, Hangzhou, China
| | - Shuo Chen
- Department of Developmental Dentistry, Dental School, The University of Texas Health Science Center at San Antonio, San Antonio, United States of America
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44
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Jun SK, Lee JH, Lee HH. The Biomineralization of a Bioactive Glass-Incorporated Light-Curable Pulp Capping Material Using Human Dental Pulp Stem Cells. BIOMED RESEARCH INTERNATIONAL 2017; 2017:2495282. [PMID: 28232937 PMCID: PMC5292364 DOI: 10.1155/2017/2495282] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Revised: 12/07/2016] [Accepted: 12/27/2016] [Indexed: 01/09/2023]
Abstract
The aim of this study was to investigate the biomineralization of a newly introduced bioactive glass-incorporated light-curable pulp capping material using human dental pulp stem cells (hDPSCs). The product (Bioactive® [BA]) was compared with a conventional calcium hydroxide-incorporated (Dycal [DC]) and a light-curable (Theracal® [TC]) counterpart. Eluates from set specimens were used for investigating the cytotoxicity and biomineralization ability, determined by alkaline phosphatase (ALP) activity and alizarin red staining (ARS). Cations and hydroxide ions in the extracts were measured. An hDPSC viability of less than 70% was observed with 50% diluted extract in all groups and with 25% diluted extract in the DC. Culturing with 12.5% diluted BA extract statistically lowered ALP activity and biomineralization compared to DC (p < 0.05), but TC did not (p > 0.05). Ca (~110 ppm) and hydroxide ions (pH 11) were only detected in DC and TC. Ionic supplement-added BA, which contained similar ion concentrations as TC, showed similar ARS mineralization compared to TC. In conclusion, the BA was similar to, yet more cytotoxic to hDPSCs than, its DC and TC. The BA was considered to stimulate biomineralization similar to DC and TC only when it released a similar amount of Ca and hydroxide ions.
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Affiliation(s)
- Soo-Kyung Jun
- Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan, Republic of Korea
| | - Jung-Hwan Lee
- Institute of Tissue Regeneration Engineering, Dankook University, Cheonan, Republic of Korea
| | - Hae-Hyoung Lee
- Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan, Republic of Korea
- Institute of Tissue Regeneration Engineering, Dankook University, Cheonan, Republic of Korea
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45
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Nishino J, Yamazaki M, Kawai M, Tachikawa K, Yamamoto K, Miyagawa K, Kogo M, Ozono K, Michigami T. Extracellular Phosphate Induces the Expression of Dentin Matrix Protein 1 Through the FGF Receptor in Osteoblasts. J Cell Biochem 2017; 118:1151-1163. [PMID: 27639037 DOI: 10.1002/jcb.25742] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 09/14/2016] [Indexed: 12/21/2022]
Abstract
Dentin matrix protein 1 (Dmp1) is an extracellular matrix protein involved in phosphate metabolism and biomineralization, and its expression markedly increases during the maturation of osteoblasts into osteocytes. We previously reported that an increased level of inorganic phosphate (Pi) in media up-regulated the expression of Dmp1 in primary osteocytes isolated from mouse bones. In the present study, we found that elevated extracellular Pi strongly induced the expression of Dmp1 in osteoblasts and explored its underlying mechanism of action. In an osteoblastic cell line MC3T3-E1, increases in extracellular Pi induced the phosphorylation of ERK1/2 and up-regulated the expression of Dmp1, fibroblast growth factor 2 (Fgf2), and Fgf receptor 1 (Fgfr1). A co-treatment with the MEK inhibitor U0126 abolished the increase in the expression of Dmp1 and Fgfr1 by elevated Pi, suggesting the involvement of the MEK/ERK pathway in this up-regulation. Elevated extracellular Pi also resulted in the phosphorylation of FGF receptor substrate 2α (FRS2α), which was diminished by knockdown of Slc20a1 encoding Pit1 sodium-phosphate co-transporter. The co-treatment with an inhibitor against FGFR (SU5402) abolished the up-regulation of Dmp1 induced by elevated extracellular Pi. In primary osteoblasts, a treatment with 4 mM Pi transiently increased the expression of early growth response 1 (Egr1) before the up-regulation of Dmp1. These results indicate that FGFR mediates the direct effects of extracellular Pi on the expression of Dmp1 in osteoblasts and enhance the close relationship between the signaling evoked by elevated extracellular Pi and FGF/FGFR signaling. J. Cell. Biochem. 118: 1151-1163, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Jin Nishino
- Department of Bone and Mineral Research, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka 594-1101, Japan.,First Department of Oral and Maxillofacial Surgery, Osaka University Graduate School of Dentistry, Suita, Osaka 565-0871, Japan
| | - Miwa Yamazaki
- Department of Bone and Mineral Research, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka 594-1101, Japan
| | - Masanobu Kawai
- Department of Bone and Mineral Research, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka 594-1101, Japan
| | - Kanako Tachikawa
- Department of Bone and Mineral Research, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka 594-1101, Japan
| | - Keiko Yamamoto
- Department of Bone and Mineral Research, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka 594-1101, Japan.,Department of Pediatrics, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Kazuaki Miyagawa
- Department of Bone and Mineral Research, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka 594-1101, Japan.,First Department of Oral and Maxillofacial Surgery, Osaka University Graduate School of Dentistry, Suita, Osaka 565-0871, Japan
| | - Mikihiko Kogo
- First Department of Oral and Maxillofacial Surgery, Osaka University Graduate School of Dentistry, Suita, Osaka 565-0871, Japan
| | - Keiichi Ozono
- Department of Pediatrics, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Toshimi Michigami
- Department of Bone and Mineral Research, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka 594-1101, Japan
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46
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Wang J, Massoudi D, Ren Y, Muir AM, Harris SE, Greenspan DS, Feng JQ. BMP1 and TLL1 Are Required for Maintaining Periodontal Homeostasis. J Dent Res 2017; 96:578-585. [PMID: 28068493 DOI: 10.1177/0022034516686558] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Mutations in bone morphogenetic protein 1 (BMP1) in humans or deletion of BMP1 and related protease tolloid like 1 (TLL1) in mice lead to osteogenesis imperfecta (OI). Here, we show progressive periodontal defects in mice in which both BMP1 and TLL1 have been conditionally ablated, including malformed periodontal ligament (PDL) (recently shown to play key roles in normal alveolar bone formation), significant loss in alveolar bone mass ( P < 0.01), and a sharp reduction in cellular cementum. Molecular mechanism studies revealed a dramatic increase in the uncleaved precursor of type I collagen (procollagen I) and a reduction in dentin matrix protein 1 (DMP1), which is partially responsible for defects in extracellular matrix (ECM) formation and mineralization. We also showed a marked increase in the expression of matrix metallopeptidase 13 (MMP13) and tartrate-resistant acid phosphatase (TRAP), leading to an acceleration in periodontal breakdown. Finally, we demonstrated that systemic application of antibiotics significantly improved the alveolar bone and PDL damage of the knockdown phenotype, which are thus shown to be partially secondary to pathogen-induced inflammation. Together, identification of the novel roles of BMP1 and TLL1 in maintaining homeostasis of periodontal formation, partly via biosynthetic processing of procollagen I and DMP1, provides novel insights into key contributions of the extracellular matrix environment to periodontal homeostasis and contributes toward understanding of the pathology of periodontitis.
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Affiliation(s)
- J Wang
- 1 Biomedical Sciences, Texas A&M College of Dentistry, Dallas, TX, USA.,2 State Key Laboratory of Oral Diseases, Department of Periodontics, West China Hospital of Stomatology, Sichuan University, China
| | - D Massoudi
- 3 Department of Cell and Regenerative Biology, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Y Ren
- 1 Biomedical Sciences, Texas A&M College of Dentistry, Dallas, TX, USA
| | - A M Muir
- 3 Department of Cell and Regenerative Biology, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - S E Harris
- 4 Department of Periodontics, UT Health Science Center School of Dentistry, San Antonio, TX, USA
| | - D S Greenspan
- 3 Department of Cell and Regenerative Biology, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - J Q Feng
- 1 Biomedical Sciences, Texas A&M College of Dentistry, Dallas, TX, USA
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47
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Cui CY, Wang SN, Ren HH, Li AL, Qiu D, Gan YH, Dong YM. Regeneration of dental–pulp complex-like tissue using phytic acid derived bioactive glasses. RSC Adv 2017. [DOI: 10.1039/c7ra01480e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Phytic acid derived bioactive calcium phosphosilicate (PSC) glasses were synthesised by using phytic acid as a phosphorus precursor. PSC have superior biocompatibility for dental pulp cells and ability to regenerate dentin–pulp complex to 45S5.
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Affiliation(s)
- Cai-Yun Cui
- Department of Cariology and Endodontology
- Peking University School and Hospital of Stomatology
- Beijing 100081
- P. R. China
- National Engineering Laboratory for Digital and Material Technology of Stomatology
| | - Sai-Nan Wang
- Department of Cariology and Endodontology
- Peking University School and Hospital of Stomatology
- Beijing 100081
- P. R. China
- National Engineering Laboratory for Digital and Material Technology of Stomatology
| | - Hui-Hui Ren
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Ai-Ling Li
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Dong Qiu
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Ye-Hua Gan
- National Engineering Laboratory for Digital and Material Technology of Stomatology
- Beijing Key Laboratory of Digital Stomatology
- Beijing 100081
- P. R. China
- Central Laboratory
| | - Yan-Mei Dong
- Department of Cariology and Endodontology
- Peking University School and Hospital of Stomatology
- Beijing 100081
- P. R. China
- National Engineering Laboratory for Digital and Material Technology of Stomatology
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48
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Xie H, Chua M, Islam I, Bentini R, Cao T, Viana-Gomes JC, Castro Neto AH, Rosa V. CVD-grown monolayer graphene induces osteogenic but not odontoblastic differentiation of dental pulp stem cells. Dent Mater 2017; 33:e13-e21. [DOI: 10.1016/j.dental.2016.09.030] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 09/09/2016] [Accepted: 09/09/2016] [Indexed: 01/09/2023]
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49
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Li Y, He L, Pan S, Zhang L, Zhang W, Yi H, Niu Y. Three-dimensional simulated microgravity culture improves the proliferation and odontogenic differentiation of dental pulp stem cell in PLGA scaffolds implanted in mice. Mol Med Rep 2016; 15:873-878. [PMID: 28000851 DOI: 10.3892/mmr.2016.6042] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 11/17/2016] [Indexed: 11/06/2022] Open
Abstract
Tooth regeneration through stem cell-based therapy is a promising treatment for tooth decay and loss. Human dental pulp stem cells (hDPSCs) have been widely identified as the stem cells with the most potential for tooth tissue regeneration. However, the culture of hDPSCs in vitro for tissue engineering is challenging, as cells may proliferate slowly or/and differentiate poorly in vivo. Dynamic three‑dimensional (3D) simulated microgravity (SMG) created using the rotary cell culture system is considered to an effective tool, which contributes to several cell functions. Thus, the present study aimed to investigate the effect of dynamic 3D SMG culture on the proliferation and odontogenic differentiation abilities of hDPSCs in poly (lactic‑co‑glycolic acid) (PLGA) scaffolds in nude mice. The hDPSCs on PLGA scaffolds were maintained separately in the 3D SMG culture system and static 3D cultures with osteogenic medium for 7 days in vitro. Subsequently, the cell‑PLGA complexes were implanted subcutaneously on the backs of nude mice for 4 weeks. The results of histological and immunohistochemical examinations of Ki‑67, type I collagen, dentin sialoprotein and DMP‑1 indicated that the proliferation and odontogenic differentiation abilities of the hDPSCs prepared in the 3D SMG culture system were higher, compared with those prepared in the static culture system. These findings suggested that dynamic 3D SMG culture likely contributes to tissue engineering by improving the proliferation and odontogenic differentiation abilities of hDPSCs in vivo.
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Affiliation(s)
- Yanping Li
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Lina He
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Shuang Pan
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Lin Zhang
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Weiwei Zhang
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Hong Yi
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Yumei Niu
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
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Feng JQ, Huang H, Lu Y, Ye L, Xie Y, Tsutsui TW, Kunieda T, Castranio T, Scott G, Bonewald LB, Mishina Y. The Dentin Matrix Protein 1 (Dmp1) is Specifically Expressed in Mineralized, but not Soft, Tissues during Development. J Dent Res 2016; 82:776-80. [PMID: 14514755 DOI: 10.1177/154405910308201003] [Citation(s) in RCA: 167] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Dentin Matrix Protein 1 ( Dmp1) was originally identified from dentin. However, its expression and function in vivo are not clear. To clarify these two issues, we have generated mice carrying a truncated Dmp1 gene by using gene targeting to replace exon 6 with a lacZ gene. Northern blot analysis shows the expected 5.8-kb Dmp1-lacZ fusion transcript and loss of the wild-type 2.8-kb Dmp1 transcript, confirmed by a lack of immunostaining for the protein. Using heterozygous animals, we demonstrate that Dmp1 is specific for mineralized tissues. Not previously shown, Dmp1 is also expressed in pulp cells. Dmp1-deficient embryos and newborns display no apparent gross abnormal phenotype, although there are a modest expansion of the hypertrophic chondrocyte zone and a modest increase in the long bone diameter. This suggests that DMP1 is not essential for early mouse skeletal or dental development.
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Affiliation(s)
- J Q Feng
- Department of Oral Biology, School of Dentistry, University of Missouri-Kansas City, 650 E. 25th Street, Kansas City, MO 64108, USA.
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