1
|
Washio A, Kérourédan O, Tabata Y, Kokabu S, Kitamura C. Effect of Bioactive Glasses and Basic Fibroblast Growth Factor on Dental Pulp Cells. J Funct Biomater 2023; 14:568. [PMID: 38132822 PMCID: PMC10744375 DOI: 10.3390/jfb14120568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 12/15/2023] [Accepted: 12/15/2023] [Indexed: 12/23/2023] Open
Abstract
Ideal regeneration of hard tissue and dental pulp has been reported with the use of a combination of bioactive glass and basic fibroblast growth factor (bFGF). However, no previous study has investigated the molecular mechanisms underlying the processes induced by this combination in dental pulp cells. This study aimed to examine the cellular phenotype and transcriptional changes induced by the combination of bioactive glass solution (BG) and bFGF in dental pulp cells using phase-contrast microscopy, a cell counting kit-8 assay, alkaline phosphatase staining, and RNA sequence analysis. bFGF induced elongation of the cell process and increased the number of cells. Whereas BG did not increase ALP activity, it induced extracellular matrix-related genes in the dental pulp. In addition, the combination of BG and bFGF induces gliogenesis-related genes in the nervous system. This is to say, bFGF increased the viability of dental pulp cells, bioactive glass induced odontogenesis, and a dual stimulation with bioactive glass and bFGF induced the wound healing of the nerve system in the dental pulp. Taken together, bioactive glass and bFGF may be useful for the regeneration of the dentin-pulp complex.
Collapse
Affiliation(s)
- Ayako Washio
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan;
| | - Olivia Kérourédan
- National Institute of Health and Medical Research (INSERM), U1026 BIOTIS, University of Bordeaux, 146 Rue Léo Saignat, 33076 Bordeaux, France;
| | - Yasuhiko Tabata
- Laboratory of Biomaterials, Department of Regeneration Science and Engineering, Institute for Frontier Life and Medical Sciences, Kyoto University, 53 Kawara-cho Shogoin, Sakyo-ku, Kyoto 606-8507, Japan;
| | - Shoichiro Kokabu
- Division of Molecular Signaling and Biochemistry, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan;
| | - Chiaki Kitamura
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan;
| |
Collapse
|
2
|
Duncan HF, Kobayashi Y, Kearney M, Shimizu E. Epigenetic therapeutics in dental pulp treatment: Hopes, challenges and concerns for the development of next-generation biomaterials. Bioact Mater 2023; 27:574-593. [PMID: 37213443 PMCID: PMC10199232 DOI: 10.1016/j.bioactmat.2023.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/11/2023] [Accepted: 04/11/2023] [Indexed: 05/23/2023] Open
Abstract
This opinion-led review paper highlights the need for novel translational research in vital-pulp-treatment (VPT), but also discusses the challenges in translating evidence to clinics. Traditional dentistry is expensive, invasive and relies on an outmoded mechanical understanding of dental disease, rather than employing a biological perspective that harnesses cell activity and the regenerative-capacity. Recent research has focussed on developing minimally-invasive biologically-based 'fillings' that preserve the dental pulp; research that is shifting the paradigm from expensive high-technology dentistry, with high failure rates, to smart restorations targeted at biological processes. Current VPTs promote repair by recruiting odontoblast-like cells in a material-dependent process. Therefore, exciting opportunities exist for development of next-generation biomaterials targeted at regenerative processes in the dentin-pulp complex. This article analyses recent research using pharmacological-inhibitors to therapeutically-target histone-deacetylase (HDAC) enzymes in dental-pulp-cells (DPCs) that stimulate pro-regenerative effects with limited loss of viability. Consequently, HDAC-inhibitors have the potential to enhance biomaterial-driven tissue responses at low concentration by influencing the cellular processes with minimal side-effects, providing an opportunity to develop a topically-placed, inexpensive bio-inductive pulp-capping material. Despite positive results, clinical translation of these innovations requires enterprise to counteract regulatory obstacles, dental-industry priorities and to develop strong academic/industry partnerships. The aim of this opinion-led review paper is to discuss the potential role of therapeutically-targeting epigenetic modifications as part of a topical VPT strategy in the treatment of the damaged dental pulp, while considering the next steps, material considerations, challenges and future for the clinical development of epigenetic therapeutics or other 'smart' restorations in VPT.
Collapse
Affiliation(s)
- Henry F. Duncan
- Division of Restorative Dentistry & Periodontology, Dublin Dental University Hospital, Trinity College Dublin, University of Dublin, Lincoln Place, Dublin, Ireland
| | - Yoshifumi Kobayashi
- Department of Oral Biology, Rutgers School of Dental Medicine, Newark, NJ, USA
| | - Michaela Kearney
- Division of Restorative Dentistry & Periodontology, Dublin Dental University Hospital, Trinity College Dublin, University of Dublin, Lincoln Place, Dublin, Ireland
| | - Emi Shimizu
- Department of Oral Biology, Rutgers School of Dental Medicine, Newark, NJ, USA
| |
Collapse
|
3
|
Zhang Z, Bi F, Guo W. Research Advances on Hydrogel-Based Materials for Tissue Regeneration and Remineralization in Tooth. Gels 2023; 9:gels9030245. [PMID: 36975694 PMCID: PMC10048036 DOI: 10.3390/gels9030245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 03/14/2023] [Accepted: 03/17/2023] [Indexed: 03/29/2023] Open
Abstract
Tissue regeneration and remineralization in teeth is a long-term and complex biological process, including the regeneration of pulp and periodontal tissue, and re-mineralization of dentin, cementum and enamel. Suitable materials are needed to provide cell scaffolds, drug carriers or mineralization in this environment. These materials need to regulate the unique odontogenesis process. Hydrogel-based materials are considered good scaffolds for pulp and periodontal tissue repair in the field of tissue engineering due to their inherent biocompatibility and biodegradability, slow release of drugs, simulation of extracellular matrix, and the ability to provide a mineralized template. The excellent properties of hydrogels make them particularly attractive in the research of tissue regeneration and remineralization in teeth. This paper introduces the latest progress of hydrogel-based materials in pulp and periodontal tissue regeneration and hard tissue mineralization and puts forward prospects for their future application. Overall, this review reveals the application of hydrogel-based materials in tissue regeneration and remineralization in teeth.
Collapse
Affiliation(s)
- Zhijun Zhang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Pediatric Dentistry, West China School of Stomatology, Sichuan University, Chengdu 610041, China
| | - Fei Bi
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Weihua Guo
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Pediatric Dentistry, West China School of Stomatology, Sichuan University, Chengdu 610041, China
- Yunnan Key Laboratory of Stomatology, The Affiliated Hospital of Stomatology, School of Stomatology, Kunming Medical University, Kunming 650500, China
| |
Collapse
|
4
|
Development of Growth Factor Releasing Hyaluronic Acid-Based Hydrogel for Pulp Regeneration: A Preliminary Study. Gels 2022; 8:gels8120825. [PMID: 36547349 PMCID: PMC9778203 DOI: 10.3390/gels8120825] [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: 11/10/2022] [Revised: 12/09/2022] [Accepted: 12/09/2022] [Indexed: 12/15/2022] Open
Abstract
Growth factors play essential roles as signaling molecules in pulp regeneration. We investigated the effect of a hyaluronic acid (HA)-collagen hybrid hydrogel with controlled release of fibroblast growth factor (FGF)-2 and platelet-derived growth factor (PDGF)-BB on human pulp regeneration. The cell interaction and cytotoxicity of the HA-collagen hybrid hydrogel, the release kinetics of each growth factor, and the effects of the released growth factors on pulp cell proliferation were examined. The vitality of pulp cells was maintained. The amounts of FGF-2 and PDGF-BB released over 7 days were 68% and 50%, respectively. Groups with a different concentration of growth factor (FGF-2: 100, 200, 500, and 1000 ng/mL; PDGF-BB: 10, 50, 100, 200, and 500 ng/mL) were experimented on days 1, 3, 5, and 7. Considering FGF-2 concentration, significantly increased pulp cell proliferation was observed on days 1, 3, 5, and 7 in the 100 ng/mL group and on days 3, 5, and 7 in the 200 ng/mL group. In the case of PDGF-BB concentration, significantly increased pulp cell proliferation was observed at all four time points in the 100 ng/mL group and on days 3, 5, and 7 in the 50, 200, and 500 ng/mL groups. This indicates that the optimal concentration of FGF-2 and PDGF-BB for pulp cell proliferation was 100 ng/mL and that the HA-collagen hybrid hydrogel has potential as a controlled release delivery system for FGF-2 and PDGF-BB.
Collapse
|
5
|
Álvarez-Vásquez JL, Castañeda-Alvarado CP. Dental pulp fibroblast: A star Cell. J Endod 2022; 48:1005-1019. [DOI: 10.1016/j.joen.2022.05.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 05/04/2022] [Accepted: 05/05/2022] [Indexed: 12/16/2022]
|
6
|
Towards Induction of Angiogenesis in Dental Pulp Stem Cells Using Chitosan-Based Hydrogels Releasing Basic Fibroblast Growth Factor. BIOMED RESEARCH INTERNATIONAL 2022; 2022:5401461. [PMID: 35198635 PMCID: PMC8860569 DOI: 10.1155/2022/5401461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 11/26/2021] [Accepted: 01/19/2022] [Indexed: 11/17/2022]
Abstract
Introduction. Chitosan is a natural biopolymer that attracted enormous attention in biomedical fields. The main components of regenerative endodontic procedures (REPs), as well as tissue engineering, are scaffolds, stem cells, and growth factors. As one of the basic factors in the REPs is maintaining vascularization, this study was aimed at developing basic fibroblast growth factor- (bFGF-) loaded scaffolds and investigating their effects on the angiogenic induction in human dental pulp stem cells (hDPSCs). Methods. Poly (ε-caprolactone) (PCL)/chitosan- (CS-) based highly porous scaffold (PCL/CS) was prepared and evaluated by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) analyses. The adhesion and survival potency of seeded cells were assessed by SEM and MTT assays, respectively. The amount of angiogenic markers was investigated in gene and protein levels by real-time PCR and western blotting assays, respectively. Results. Based on our findings, the SEM and FTIR tests confirmed the appropriate structure of synthesized scaffolds. Besides, the adhesion and survival rate of cells and the levels of VEGFR-2, Tie2, and Angiopoietin-1 genes were increased significantly in the PCL/CS/bFGF group. Also, the western blotting results showed the upregulation of these markers at protein levels, which were considerably higher at the PCL/CS/bFGF group (
). Conclusions. On a more general note, this study demonstrates that the bFGF-loaded PCL/CS scaffolds have the potential to promote angiogenesis of hDPSCs, which could provide vitality of dentin-pulp complex as the initial required factor for regenerative endodontic procedures.
Collapse
|
7
|
Zhang SY, Ren JY, Yang B. Priming strategies for controlling stem cell fate: Applications and challenges in dental tissue regeneration. World J Stem Cells 2021; 13:1625-1646. [PMID: 34909115 PMCID: PMC8641023 DOI: 10.4252/wjsc.v13.i11.1625] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 05/14/2021] [Accepted: 08/27/2021] [Indexed: 02/06/2023] Open
Abstract
Mesenchymal stromal cells (MSCs) have attracted intense interest in the field of dental tissue regeneration. Dental tissue is a popular source of MSCs because MSCs can be obtained with minimally invasive procedures. MSCs possess distinct inherent properties of self-renewal, immunomodulation, proangiogenic potential, and multilineage potency, as well as being readily available and easy to culture. However, major issues, including poor engraftment and low survival rates in vivo, remain to be resolved before large-scale application is feasible in clinical treatments. Thus, some recent investigations have sought ways to optimize MSC functions in vitro and in vivo. Currently, priming culture conditions, pretreatment with mechanical and physical stimuli, preconditioning with cytokines and growth factors, and genetic modification of MSCs are considered to be the main strategies; all of which could contribute to improving MSC efficacy in dental regenerative medicine. Research in this field has made tremendous progress and continues to gather interest and stimulate innovation. In this review, we summarize the priming approaches for enhancing the intrinsic biological properties of MSCs such as migration, antiapoptotic effect, proangiogenic potential, and regenerative properties. Challenges in current approaches associated with MSC modification and possible future solutions are also indicated. We aim to outline the present understanding of priming approaches to improve the therapeutic effects of MSCs on dental tissue regeneration.
Collapse
Affiliation(s)
- Si-Yuan Zhang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Jia-Yin Ren
- Department of Oral Radiology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Bo Yang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China
- Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China
| |
Collapse
|
8
|
Kurogoushi R, Hasegawa T, Akazawa Y, Iwata K, Sugimoto A, Yamaguchi-Ueda K, Miyazaki A, Narwidina A, Kawarabayashi K, Kitamura T, Nakagawa H, Iwasaki T, Iwamoto T. Fibroblast growth factor 2 suppresses the expression of C-C motif chemokine 11 through the c-Jun N-terminal kinase pathway in human dental pulp-derived mesenchymal stem cells. Exp Ther Med 2021; 22:1356. [PMID: 34659502 PMCID: PMC8515551 DOI: 10.3892/etm.2021.10791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 09/07/2021] [Indexed: 12/15/2022] Open
Abstract
The regulation of the mesenchymal stem cell (MSC) programming mechanism promises great success in regenerative medicine. Tissue regeneration has been associated not only with the differentiation of MSCs, but also with the microenvironment of the stem cell niche that involves various cytokines and immune cells in the tissue regeneration site. In the present study, fibroblast growth factor 2 (FGF2), the principal growth factor for tooth development, dental pulp homeostasis and dentin repair, was reported to affect the expression of cytokines in human dental pulp-derived MSCs. FGF2 significantly inhibited the expression of chemokine C-C motif ligand 11 (CCL11) in a time- and dose-dependent manner in the SDP11 human dental pulp-derived MSC line. This inhibition was diminished following treatment with the AZD4547 FGF receptor (FGFR) inhibitor, indicating that FGF2 negatively regulated the expression of CCL11 in SDP11 cells. Furthermore, FGF2 activated the phosphorylation of p38 mitogen-activated protein kinase (p38 MAPK), extracellular signal-regulated kinase 1/2 (ERK1/2) and c-Jun N-terminal kinases (JNK) in SDP11 cells. The mechanism of the FGFR-downstream signaling pathway was then studied using the SB203580, U0126 and SP600125 inhibitors for p38 MAPK, ERK1/2, and JNK, respectively. Interestingly, only treatment with SP600125 blocked the FGF2-mediated suppression of CCL11. The present results suggested that FGF2 regulated the expression of cytokines and suppressed the expression of CCL11 via the JNK signaling pathway in human dental pulp-derived MSCs. The present findings could provide important insights into the association of FGF2 and CCL11 in dental tissue regeneration therapy.
Collapse
Affiliation(s)
- Rika Kurogoushi
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan.,Department of Pediatric Dentistry/Special Needs Dentistry, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8549, Japan
| | - Tomokazu Hasegawa
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan
| | - Yuki Akazawa
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan
| | - Kokoro Iwata
- Department of Pediatric Dentistry/Special Needs Dentistry, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8549, Japan
| | - Asuna Sugimoto
- Department of Pediatric Dentistry/Special Needs Dentistry, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8549, Japan
| | - Kimiko Yamaguchi-Ueda
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan
| | - Aya Miyazaki
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan
| | - Anrizandy Narwidina
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan
| | - Keita Kawarabayashi
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan
| | - Takamasa Kitamura
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan
| | - Hiroshi Nakagawa
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan
| | - Tomonori Iwasaki
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan
| | - Tsutomu Iwamoto
- Department of Pediatric Dentistry/Special Needs Dentistry, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8549, Japan
| |
Collapse
|
9
|
Liu K, Yu S, Ye L, Gao B. The Regenerative Potential of bFGF in Dental Pulp Repair and Regeneration. Front Pharmacol 2021; 12:680209. [PMID: 34354584 PMCID: PMC8329335 DOI: 10.3389/fphar.2021.680209] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Accepted: 06/22/2021] [Indexed: 02/05/2023] Open
Abstract
Regenerative endodontic therapy intends to induce the host’s natural wound-healing process, which can restore the vitality, immunity, and sensitivity of the inflammatory or necrotic pulp tissue destroyed by infection or trauma. Myriads of growth factors are critical in the processes of pulp repair and regeneration. Among the key regulatory factors are the fibroblast growth factors, which have turned out to be the master regulators of both organogenesis and tissue homeostasis. Fibroblast growth factors, a family composed of 22 polypeptides, have been used in tissue repair and regeneration settings, in conditions as diverse as burns, ulcers, bone-related diseases, and spinal cord injuries. Meanwhile, in dentistry, the basic fibroblast growth factor is the most frequently investigated. Thereby, the aim of this review is 2-fold: 1) foremost, to explore the underlying mechanisms of the bFGF in dental pulp repair and regeneration and 2) in addition, to shed light on the potential therapeutic strategies of the bFGF in dental pulp–related clinical applications.
Collapse
Affiliation(s)
- Keyue Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Sijing Yu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ling Ye
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Bo Gao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| |
Collapse
|
10
|
Abbass MMS, El-Rashidy AA, Sadek KM, Moshy SE, Radwan IA, Rady D, Dörfer CE, Fawzy El-Sayed KM. Hydrogels and Dentin-Pulp Complex Regeneration: From the Benchtop to Clinical Translation. Polymers (Basel) 2020; 12:E2935. [PMID: 33316886 PMCID: PMC7763835 DOI: 10.3390/polym12122935] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/08/2020] [Accepted: 11/10/2020] [Indexed: 02/06/2023] Open
Abstract
Dentin-pulp complex is a term which refers to the dental pulp (DP) surrounded by dentin along its peripheries. Dentin and dental pulp are highly specialized tissues, which can be affected by various insults, primarily by dental caries. Regeneration of the dentin-pulp complex is of paramount importance to regain tooth vitality. The regenerative endodontic procedure (REP) is a relatively current approach, which aims to regenerate the dentin-pulp complex through stimulating the differentiation of resident or transplanted stem/progenitor cells. Hydrogel-based scaffolds are a unique category of three dimensional polymeric networks with high water content. They are hydrophilic, biocompatible, with tunable degradation patterns and mechanical properties, in addition to the ability to be loaded with various bioactive molecules. Furthermore, hydrogels have a considerable degree of flexibility and elasticity, mimicking the cell extracellular matrix (ECM), particularly that of the DP. The current review presents how for dentin-pulp complex regeneration, the application of injectable hydrogels combined with stem/progenitor cells could represent a promising approach. According to the source of the polymeric chain forming the hydrogel, they can be classified into natural, synthetic or hybrid hydrogels, combining natural and synthetic ones. Natural polymers are bioactive, highly biocompatible, and biodegradable by naturally occurring enzymes or via hydrolysis. On the other hand, synthetic polymers offer tunable mechanical properties, thermostability and durability as compared to natural hydrogels. Hybrid hydrogels combine the benefits of synthetic and natural polymers. Hydrogels can be biofunctionalized with cell-binding sequences as arginine-glycine-aspartic acid (RGD), can be used for local delivery of bioactive molecules and cellularized with stem cells for dentin-pulp regeneration. Formulating a hydrogel scaffold material fulfilling the required criteria in regenerative endodontics is still an area of active research, which shows promising potential for replacing conventional endodontic treatments in the near future.
Collapse
Affiliation(s)
- Marwa M. S. Abbass
- Oral Biology Department, Faculty of Dentistry, Cairo University, Cairo 11562, Egypt; (M.M.S.A.); (S.E.M.); (I.A.R.); (D.R.)
- Stem Cells and Tissue Engineering Research Group, Faculty of Dentistry, Cairo University, Cairo 11562, Egypt; (A.A.E.-R.); (K.M.S.)
| | - Aiah A. El-Rashidy
- Stem Cells and Tissue Engineering Research Group, Faculty of Dentistry, Cairo University, Cairo 11562, Egypt; (A.A.E.-R.); (K.M.S.)
- Biomaterials Department, Faculty of Dentistry, Cairo University, Cairo 11562, Egypt
| | - Khadiga M. Sadek
- Stem Cells and Tissue Engineering Research Group, Faculty of Dentistry, Cairo University, Cairo 11562, Egypt; (A.A.E.-R.); (K.M.S.)
- Biomaterials Department, Faculty of Dentistry, Cairo University, Cairo 11562, Egypt
| | - Sara El Moshy
- Oral Biology Department, Faculty of Dentistry, Cairo University, Cairo 11562, Egypt; (M.M.S.A.); (S.E.M.); (I.A.R.); (D.R.)
- Stem Cells and Tissue Engineering Research Group, Faculty of Dentistry, Cairo University, Cairo 11562, Egypt; (A.A.E.-R.); (K.M.S.)
| | - Israa Ahmed Radwan
- Oral Biology Department, Faculty of Dentistry, Cairo University, Cairo 11562, Egypt; (M.M.S.A.); (S.E.M.); (I.A.R.); (D.R.)
- Stem Cells and Tissue Engineering Research Group, Faculty of Dentistry, Cairo University, Cairo 11562, Egypt; (A.A.E.-R.); (K.M.S.)
| | - Dina Rady
- Oral Biology Department, Faculty of Dentistry, Cairo University, Cairo 11562, Egypt; (M.M.S.A.); (S.E.M.); (I.A.R.); (D.R.)
- Stem Cells and Tissue Engineering Research Group, Faculty of Dentistry, Cairo University, Cairo 11562, Egypt; (A.A.E.-R.); (K.M.S.)
| | - Christof E. Dörfer
- Clinic for Conservative Dentistry and Periodontology, School of Dental Medicine, Christian Albrechts University, 24105 Kiel, Germany;
| | - Karim M. Fawzy El-Sayed
- Stem Cells and Tissue Engineering Research Group, Faculty of Dentistry, Cairo University, Cairo 11562, Egypt; (A.A.E.-R.); (K.M.S.)
- Clinic for Conservative Dentistry and Periodontology, School of Dental Medicine, Christian Albrechts University, 24105 Kiel, Germany;
- Oral Medicine and Periodontology Department, Faculty of Dentistry, Cairo University, Cairo 11562, Egypt
| |
Collapse
|
11
|
Abstract
INTRODUCTION Bioactive molecule carrier systems (BACS) are biomaterial-based substrates that facilitate the delivery of active signaling molecules for different biologically based therapeutic applications, which include regenerative endodontic procedures. Tissue regeneration or organized repair in regenerative endodontic procedures is governed by the dynamic orchestration of interactions between stem/progenitor cells, bioactive molecules, and extracellular matrix. BACS aid in mimicking some of the complex physiological processes, overcoming some of the challenges faced in the clinical translation of regenerative endodontic procedures. AREAS COVERED This narrative review addresses the role of BACS in stem/progenitor cell proliferation, migration, and differentiation with the application for dentin-pulp tissue engineering both in vitro and in vivo. BACS shield the bioactivity of the immobilized molecules against environmental factors, while its design allows the pre-programmed release of bioactive molecules in a spatial and temporal-controlled manner. The polymeric and non-polymeric materials used to synthesize micro and nanoscale-based BACS are reviewed. EXPERT OPINION Comprehensive characterization of well-designed and customized BACS is necessary to be able to deliver multiple bioactive molecules in spatiotemporally controlled manner and to address the release kinetics required for potential in vivo application. This warrants further laboratory-based experiments and rigorous clinical investigations to enable their clinical translation for regenerative endodontic procedures.
Collapse
Affiliation(s)
- Anil Kishen
- The Kishen Lab, Dental Research Institute, University of Toronto , Toronto, ON, Canada.,Faculty of Dentistry, University of Toronto , Toronto, ON, Canada.,School of Graduate Studies, University of Toronto , Toronto, ON, Canada.,Department of Dentistry, Mount Sinai Health System, Mount Sinai Hospital , Toronto, ON, Canada
| | - Hebatullah Hussein
- The Kishen Lab, Dental Research Institute, University of Toronto , Toronto, ON, Canada.,Faculty of Dentistry, University of Toronto , Toronto, ON, Canada
| |
Collapse
|
12
|
Baranova J, Büchner D, Götz W, Schulze M, Tobiasch E. Tooth Formation: Are the Hardest Tissues of Human Body Hard to Regenerate? Int J Mol Sci 2020; 21:E4031. [PMID: 32512908 PMCID: PMC7312198 DOI: 10.3390/ijms21114031] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/02/2020] [Accepted: 06/03/2020] [Indexed: 12/12/2022] Open
Abstract
With increasing life expectancy, demands for dental tissue and whole-tooth regeneration are becoming more significant. Despite great progress in medicine, including regenerative therapies, the complex structure of dental tissues introduces several challenges to the field of regenerative dentistry. Interdisciplinary efforts from cellular biologists, material scientists, and clinical odontologists are being made to establish strategies and find the solutions for dental tissue regeneration and/or whole-tooth regeneration. In recent years, many significant discoveries were done regarding signaling pathways and factors shaping calcified tissue genesis, including those of tooth. Novel biocompatible scaffolds and polymer-based drug release systems are under development and may soon result in clinically applicable biomaterials with the potential to modulate signaling cascades involved in dental tissue genesis and regeneration. Approaches for whole-tooth regeneration utilizing adult stem cells, induced pluripotent stem cells, or tooth germ cells transplantation are emerging as promising alternatives to overcome existing in vitro tissue generation hurdles. In this interdisciplinary review, most recent advances in cellular signaling guiding dental tissue genesis, novel functionalized scaffolds and drug release material, various odontogenic cell sources, and methods for tooth regeneration are discussed thus providing a multi-faceted, up-to-date, and illustrative overview on the tooth regeneration matter, alongside hints for future directions in the challenging field of regenerative dentistry.
Collapse
Affiliation(s)
- Juliana Baranova
- Department of Biochemistry, Institute of Chemistry, University of São Paulo, Avenida Professor Lineu Prestes 748, Vila Universitária, São Paulo 05508-000, Brazil;
| | - Dominik Büchner
- Department of Natural Sciences, Bonn-Rhein-Sieg University of Applied Sciences, von-Liebig-Straße 20, 53359 Rheinbach, NRW, Germany; (D.B.); (M.S.)
| | - Werner Götz
- Oral Biology Laboratory, Department of Orthodontics, Dental Hospital of the University of Bonn, Welschnonnenstraße 17, 53111 Bonn, NRW, Germany;
| | - Margit Schulze
- Department of Natural Sciences, Bonn-Rhein-Sieg University of Applied Sciences, von-Liebig-Straße 20, 53359 Rheinbach, NRW, Germany; (D.B.); (M.S.)
| | - Edda Tobiasch
- Department of Natural Sciences, Bonn-Rhein-Sieg University of Applied Sciences, von-Liebig-Straße 20, 53359 Rheinbach, NRW, Germany; (D.B.); (M.S.)
| |
Collapse
|
13
|
Wang F, Xie C, Ren N, Bai S, Zhao Y. Human Freeze-dried Dentin Matrix as a Biologically Active Scaffold for Tooth Tissue Engineering. J Endod 2019; 45:1321-1331. [DOI: 10.1016/j.joen.2019.08.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Revised: 07/31/2019] [Accepted: 08/09/2019] [Indexed: 10/25/2022]
|
14
|
The possible role of basic fibroblast growth factor in dental pulp. Arch Oral Biol 2019; 109:104574. [PMID: 31585238 DOI: 10.1016/j.archoralbio.2019.104574] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 08/31/2019] [Accepted: 09/22/2019] [Indexed: 12/11/2022]
Abstract
Fibroblast growth factors (FGFs) are growth factors that play an important role in tooth development, repair, and regeneration. Of the FGF families, basic fibroblast growth factor (bFGF) has been the most frequently investigated in dentistry. Numerous studies have reported advantages of bFGF, while others did not find any additional benefit. This review gives a comprehensive summary of the potential role of bFGF in dental pulp wound healing and regeneration in connection with cell proliferation and differentiation, angiogenesis, and neural differentiation from both in vitro and in vivo studies. Furthermore, the possible underlying mechanisms associated with bFGF in promoting dental pulp wound healing are discussed in this review.
Collapse
|
15
|
Washio A, Teshima H, Yokota K, Kitamura C, Tabata Y. Preparation of gelatin hydrogel sponges incorporating bioactive glasses capable for the controlled release of fibroblast growth factor-2. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2019; 30:49-63. [PMID: 30470163 DOI: 10.1080/09205063.2018.1544474] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Gelatin hydrogel sponges incorporating bioactive glasses (Gel-BG) were fabricated. We evaluated the characteristics of Gel-BG as scaffolds from the perspective of their mechanical properties and the formation of hydroxyapatite by the incorporation of bioactive glasses (BG). In addition, the Gel-BG degradation and the profile of fibroblast growth factor-2 (FGF-2) release from the Gel-BG were examined. Every Gel-BG showed an interconnected pore structure with the pore size range of 180-200 µm. The compression modulus of sponges incorporating BG increased. The time profiles of degradation for the 72-h crosslinked gelatin hydrogel sponges incorporating 10 wt% BG (Gel-BG(10)) and 50 wt% BG (Gel-BG(50)) were analogous to that of the 24-h crosslinked gelatin hydrogel sponge without BG (Gel-BG(0)). In measuring the release of FGF-2 from Gel-BG, the Gel-BG(10) and Gel-BG(50) showed almost analogous 100% cumulative release within 28 days in vivo. Additionally, a bioactivity evaluation showed that the presence of gelatin does not affect the in vitro bioactivity of Gel-BG. These sponges showed mechanical and chemical functionality as scaffolds, featuring both the controlled release of FGF-2 and the induction of hydroxyapatite crystallization.
Collapse
Affiliation(s)
- Ayako Washio
- a Division of Endodontics and Restorative Dentistry, Department of Oral Functions , Kyushu Dental University , Kitakyushu , Japan
| | - Hiroki Teshima
- b Research and Development Department , Nippon Shika Yakuhin Co., Ltd , Shimonoseki , Japan
| | - Kazuyoshi Yokota
- b Research and Development Department , Nippon Shika Yakuhin Co., Ltd , Shimonoseki , Japan
| | - Chiaki Kitamura
- a Division of Endodontics and Restorative Dentistry, Department of Oral Functions , Kyushu Dental University , Kitakyushu , Japan
| | - Yasuhiko Tabata
- c Laboratory of Biomaterials, Department of Regeneration Science and Engineering , Institute for Frontier Life and Medical Sciences, Kyoto University , Kyoto , Japan
| |
Collapse
|
16
|
Morotomi T, Washio A, Kitamura C. Current and future options for dental pulp therapy. JAPANESE DENTAL SCIENCE REVIEW 2018; 55:5-11. [PMID: 30733839 PMCID: PMC6354285 DOI: 10.1016/j.jdsr.2018.09.001] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 07/13/2018] [Accepted: 09/10/2018] [Indexed: 01/01/2023] Open
Abstract
Dental pulp is a connective tissue and has functions that include initiative, formative, protective, nutritive, and reparative activities. However, it has relatively low compliance, because it is enclosed in hard tissue. Its low compliance against damage, such as dental caries, results in the frequent removal of dental pulp during endodontic therapy. Loss of dental pulp frequently leads to fragility of the tooth, and eventually, a deterioration in the patient’s quality of life. With the development of biomaterials such as bioceramics and advances in pulp biology such as the identification of dental pulp stem cells, novel ideas for the preservation of dental pulp, the regenerative therapy of dental pulp, and new biomaterials for direct pulp capping have now been proposed. Therapies for dental pulp are classified into three categories; direct pulp capping, vital pulp amputation, and treatment for non-vital teeth. In this review, we discuss current and future treatment options in these therapies.
Collapse
Affiliation(s)
- Takahiko Morotomi
- Division of Endodontics and Restorative Dentistry, Department of Science of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan
| | - Ayako Washio
- Division of Endodontics and Restorative Dentistry, Department of Science of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan
| | - Chiaki Kitamura
- Division of Endodontics and Restorative Dentistry, Department of Science of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan
| |
Collapse
|
17
|
Vidovic-Zdrilic I, Vining KH, Vijaykumar A, Kalajzic I, Mooney DJ, Mina M. FGF2 Enhances Odontoblast Differentiation by αSMA + Progenitors In Vivo. J Dent Res 2018; 97:1170-1177. [PMID: 29649366 DOI: 10.1177/0022034518769827] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The goal of this study was to examine the effects of early and limited exposure of perivascular cells expressing α (αSMA) to fibroblast growth factor 2 (FGF2) in vivo. We performed in vivo fate mapping by inducible Cre-loxP and experimental pulp injury in molars to induce reparative dentinogenesis. Our results demonstrate that early delivery of exogenous FGF2 to exposed pulp led to proliferative expansion of αSMA-tdTomato+ cells and their accelerated differentiation into odontoblasts. In vivo lineage-tracing experiments showed that the calcified bridge/reparative dentin in FGF2-treated pulps were lined with an increased number of Dspp+ odontoblasts and devoid of BSP+ osteoblasts. The increased number of odontoblasts derived from αSMA-tdTomato+ cells and the formation of reparative dentin devoid of osteoblasts provide in vivo evidence for the stimulatory effects of FGF signaling on odontoblast differentiation from early progenitors in dental pulp.
Collapse
Affiliation(s)
- I Vidovic-Zdrilic
- 1 Departments of Craniofacial Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT, USA
| | - K H Vining
- 2 John A. Paulson School of Engineering and Applied Sciences and Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA, USA
| | - A Vijaykumar
- 1 Departments of Craniofacial Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT, USA
| | - I Kalajzic
- 3 Departments of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT, USA
| | - D J Mooney
- 2 John A. Paulson School of Engineering and Applied Sciences and Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA, USA
| | - M Mina
- 1 Departments of Craniofacial Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT, USA
| |
Collapse
|
18
|
da Rosa WLO, Piva E, da Silva AF. Disclosing the physiology of pulp tissue for vital pulp therapy. Int Endod J 2018; 51:829-846. [DOI: 10.1111/iej.12906] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Accepted: 01/30/2018] [Indexed: 12/23/2022]
Affiliation(s)
- W. L. O. da Rosa
- Department of Restorative Dentistry; School of Dentistry; Federal University of Pelotas; Pelotas Brazil
| | - E. Piva
- Department of Restorative Dentistry; School of Dentistry; Federal University of Pelotas; Pelotas Brazil
| | - A. F. da Silva
- Department of Restorative Dentistry; School of Dentistry; Federal University of Pelotas; Pelotas Brazil
| |
Collapse
|
19
|
Shrestha S, Kishen A. Bioactive Molecule Delivery Systems for Dentin-pulp Tissue Engineering. J Endod 2017; 43:733-744. [PMID: 28320538 DOI: 10.1016/j.joen.2016.12.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 12/11/2016] [Accepted: 12/13/2016] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Regenerative endodontic procedures use bioactive molecules (BMs), which are active signaling molecules that initiate and maintain cell responses and interactions. When applied in a bolus form, they may undergo rapid diffusion and denaturation resulting in failure to induce the desired effects on target cells. METHODS The controlled release of BMs from a biomaterial carrier is expected to enhance and accelerate functional tissue engineering during regenerative endodontic procedures. This narrative review presents a comprehensive review of different polymeric BM release strategies with relevance to dentin-pulp engineering. RESULTS Carrier systems designed to allow the preprogrammed release of BMs in a spatial- and temporal-controlled manner would aid in mimicking the natural wound healing process while overcoming some of the challenges faced in clinical translation of regenerative endodontic procedures. CONCLUSIONS Spatial- and temporal-controlled BM release systems have become an exciting option in dentin-pulp tissue engineering; nonetheless, further validation of this concept and knowledge is required for their potential clinical translation.
Collapse
Affiliation(s)
- Suja Shrestha
- Discipline of Endodontics, Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Anil Kishen
- Discipline of Endodontics, Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada.
| |
Collapse
|
20
|
Luiz de Oliveira da Rosa W, Machado da Silva T, Fernando Demarco F, Piva E, Fernandes da Silva A. Could the application of bioactive molecules improve vital pulp therapy success? A systematic review. J Biomed Mater Res A 2017; 105:941-956. [PMID: 27998031 DOI: 10.1002/jbm.a.35968] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 12/01/2016] [Indexed: 12/26/2022]
Abstract
This study aimed to systematically review the literature of animal studies to evaluate whether bioactive dentin proteins could improve vital pulp therapy success. The review is reported in accordance with the PRISMA Statement. Two reviewers independently conducted a literature search of seven databases: PubMed (Medline), Lilacs, IBECS, BBO, Web of Science, Scopus, and SciELO. Animal experiments in which bioactive dentin proteins were applied directly or indirectly to the pulp tissue were included. Data regarding the characteristics of the proteins evaluated, the delivery systems used and the main findings from each study were tabulated to assess the outcomes of interest (tertiary dentin formation, inflammatory response, intratubular mineralization). After screening, 32 papers were subjected to qualitative analysis. In 75% of the studies, direct pulp capping was performed. Additionally, the most studied proteins were BMP-7, TGF-β1, and extracted soluble dentin matrix proteins. In conclusion, there is evidence in the literature suggesting that bioactive dentin molecules could enhance tertiary dentin formation with fewer initial inflammatory responses in direct and indirect pulp therapy in animal models. There are potential areas to be explored for novel therapeutic approaches for dental tissue repair and regeneration with bioactive materials. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 941-956, 2017.
Collapse
Affiliation(s)
| | - Tiago Machado da Silva
- Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, Brazil
| | - Flávio Fernando Demarco
- Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, Brazil
| | - Evandro Piva
- Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, Brazil
| | - Adriana Fernandes da Silva
- Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, Brazil
| |
Collapse
|
21
|
|
22
|
Is Pulp Inflammation a Prerequisite for Pulp Healing and Regeneration? Mediators Inflamm 2015; 2015:347649. [PMID: 26538825 PMCID: PMC4619968 DOI: 10.1155/2015/347649] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 06/05/2015] [Accepted: 07/14/2015] [Indexed: 12/16/2022] Open
Abstract
The importance of inflammation has been underestimated in pulpal healing, and in the past, it has been considered only as an undesirable effect. Associated with moderate inflammation, necrosis includes pyroptosis, apoptosis, and nemosis. There are now evidences that inflammation is a prerequisite for pulp healing, with series of events ahead of regeneration. Immunocompetent cells are recruited in the apical part. They slide along the root and migrate toward the crown. Due to the high alkalinity of the capping agent, pulp cells display mild inflammation, proliferate, and increase in number and size and initiate mineralization. Pulp fibroblasts become odontoblast-like cells producing type I collagen, alkaline phosphatase, and SPARC/osteonectin. Molecules of the SIBLING family, matrix metalloproteinases, and vascular and nerve mediators are also implicated in the formation of a reparative dentinal bridge, osteo/orthodentin closing the pulp exposure. Beneath a calciotraumatic line, a thin layer identified as reactionary dentin underlines the periphery of the pulp chamber. Inflammatory and/or noninflammatory processes contribute to produce a reparative dentinal bridge closing the pulp exposure, with minute canaliculi and large tunnel defects. Depending on the form and severity of the inflammatory and noninflammatory processes, and according to the capping agent, pulp reactions are induced specifically.
Collapse
|
23
|
Baudry A, Alleaume-Butaux A, Dimitrova-Nakov S, Goldberg M, Schneider B, Launay JM, Kellermann O. Essential Roles of Dopamine and Serotonin in Tooth Repair: Functional Interplay Between Odontogenic Stem Cells and Platelets. Stem Cells 2015; 33:2586-95. [PMID: 25865138 DOI: 10.1002/stem.2037] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 03/06/2015] [Accepted: 03/28/2015] [Indexed: 12/11/2022]
Abstract
Characterizing stem cell intrinsic functions is an ongoing challenge for cell therapies. Here, we report that two independent A4 and H8 stem cell lines isolated from mouse molar pulp display the overall functions of bioaminergic cells. Both clones produce neurotrophins and synthesize, catabolize, store, and transport serotonin (5-hydroxytryptamine [5-HT]) and dopamine (DA). They express 5-HT1D,2B,7 and D1,3 autoreceptors, which render pulpal stem cells competent to respond to circulating 5-HT and DA. We show that injury-activated platelets are the source of systemic 5-HT and DA necessary for dental repair since natural dentin reparation is impaired in two rat models with monoamine storage-deficient blood platelets. Moreover, selective inhibition of either D1, D3, 5-HT2B, or 5-HT7 receptor within the pulp of wild-type rat molars after lesion alters the reparative process. Altogether our data argue that 5-HT and DA coreleased by pulp injury-activated platelets are critical for stem cell-mediated dental repair through 5-HT and DA receptor signalings.
Collapse
Affiliation(s)
- Anne Baudry
- INSERM UMR-S 1124, Cellules Souches, Signalisation et Prions, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, UMR-S 1124, Paris, France
| | - Aurélie Alleaume-Butaux
- INSERM UMR-S 1124, Cellules Souches, Signalisation et Prions, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, UMR-S 1124, Paris, France
| | - Sasha Dimitrova-Nakov
- INSERM UMR-S 1124, Cellules Souches, Signalisation et Prions, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, UMR-S 1124, Paris, France
| | - Michel Goldberg
- INSERM UMR-S 1124, Cellules Souches, Signalisation et Prions, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, UMR-S 1124, Paris, France
| | - Benoît Schneider
- INSERM UMR-S 1124, Cellules Souches, Signalisation et Prions, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, UMR-S 1124, Paris, France
| | - Jean-Marie Launay
- AP-HP, Service de Biochimie, Hôpital Lariboisière, Paris, France.,INSERM U942, Hôpital Lariboisière, Paris, France.,Pharma Research Department, F. Hoffmann-La-Roche, Ltd, Basel, Switzerland
| | - Odile Kellermann
- INSERM UMR-S 1124, Cellules Souches, Signalisation et Prions, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, UMR-S 1124, Paris, France
| |
Collapse
|
24
|
Sagomonyants K, Mina M. Stage-specific effects of fibroblast growth factor 2 on the differentiation of dental pulp cells. Cells Tissues Organs 2015; 199:311-28. [PMID: 25823776 DOI: 10.1159/000371343] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/04/2014] [Indexed: 12/31/2022] Open
Abstract
Dentinogenesis is a complex and multistep process, which is regulated by various growth factors, including members of the fibroblast growth factor (FGF) family. Both positive and negative effects of FGFs on dentinogenesis have been reported, but the underlying mechanisms of these conflicting results are still unclear. To gain a better insight into the role of FGF2 in dentinogenesis, we used dental pulp cells from various transgenic mice, in which fluorescent protein expression identifies cells at different stages of odontoblast differentiation. Our results showed that the continuous exposure of pulp cells to FGF2 inhibited mineralization and revealed both the stimulatory and inhibitory effects of FGF2 on the expression of markers of dentinogenesis and various transgenes. During the proliferation phase of in vitro growth, FGF2 increased the expression of markers of dentinogenesis and the percentages of dentin matrix protein 1/green fluorescent protein (DMP1-GFP)-positive functional odontoblasts and dentin sialophosphoprotein (DSPP)-Cerulean-positive odontoblasts. Additional exposure to FGF2 during the differentiation/mineralization phase of in vitro growth decreased the extent of mineralization and the expression of markers of dentinogenesis and of the DMP1-GFP and DSPP-Cerulean transgenes. Recovery experiments showed that the inhibitory effects of FGF2 on dentinogenesis were related to the blocking of the differentiation of cells into mature odontoblasts. These observations together showed the stage-specific effects of FGF2 on dentinogenesis by dental pulp cells, and they provide critical information for the development of improved treatments for vital pulp therapy and dentin regeneration.
Collapse
Affiliation(s)
- Karen Sagomonyants
- Department of Craniofacial Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, Conn., USA
| | | |
Collapse
|
25
|
Mathieu S, Jeanneau C, Sheibat-Othman N, Kalaji N, Fessi H, About I. Usefulness of controlled release of growth factors in investigating the early events of dentin-pulp regeneration. J Endod 2014; 39:228-35. [PMID: 23321236 DOI: 10.1016/j.joen.2012.11.007] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Revised: 10/26/2012] [Accepted: 11/06/2012] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Little information is yet available on the signals involved in progenitor cell migration that precede reparative dentin synthesis. Our aim was to investigate the effect of the controlled release of fibroblast growth factor (FGF)-2 and transforming growth factor β1 (TGF-β1) on permanent teeth pulp cell proliferation and progenitor cell migration. METHODS FGF-2 and TGF-β1 were encapsulated into a biodegradable polymer matrix of lactide and glycolide. Human pulp cells were prepared from third molars, and progenitor cells were sorted by STRO-1. The synthesized microsphere toxicity was checked with the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide test. The growth factor release kinetics were checked by an enzyme-linked immunosorbent assay while maintaining their biological activity and were evaluated by investigating their effects on pulp cell proliferation. Their chemotactic potential was investigated on STRO-1-sorted cells in a migration chamber on Matrigel (Cambrex Bio Science, Walkersville, MD). RESULTS The cell viability was unaffected by the presence of microspheres. The released amount of FGF-2 and TGF-β1 from the microspheres was maintained after 21 days. Increasing the FGF-2-loaded microsphere concentration or the release period significantly increased dental pulp cell proliferation. TGF-β1 acted as a potent chemotactic factor of STRO-1-sorted cells. CONCLUSIONS Encapsulating TGF-β1 and FGF-2 in a biodegradable polymer of lactide and glycolide microsphere allowed a sustained release of growth factors and provided a protection to their biological activities. Our results clearly show the usefulness of growth factor controlled release in investigating the early events of pulp/dentin regeneration. It provides additional data on the signals required for vital pulp therapy and future tissue engineering.
Collapse
Affiliation(s)
- Sylvie Mathieu
- Centre de Recherche en Oncologie et Oncopharmacologie, Aix-Marseille University, Marseille, France
| | | | | | | | | | | |
Collapse
|
26
|
Ajay Sharma L, Sharma A, Dias GJ. Advances in regeneration of dental pulp--a literature review. ACTA ACUST UNITED AC 2013; 6:85-98. [PMID: 23946258 DOI: 10.1111/jicd.12064] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Accepted: 06/19/2013] [Indexed: 12/29/2022]
Abstract
This review summarizes the biological response of dentin-pulp complexes to a variety of stimuli and responses to current treatment therapies and reviews the role of tissue engineering and its application in regenerative endodontics. An electronic search was undertaken based on keywords using Medline/PubMed, Embase, Web of Science and Ovid database resources up to March 2012 to identify appropriate articles, supplemented by a manual search using reference lists from relevant articles. Inclusion criteria were mainly based on different combinations of keywords and restricted to articles published in English language only. Biological approaches based on tissue engineering principles were found to offer the possibility of restoring natural tooth vitality, with distinct evidence that regeneration of lost dental tissues is possible. Studies to formulate an ideal restorative material with regenerative properties, however, are still under way. Further research with supporting clinical studies is required to identify the most effective and safe treatment therapy.
Collapse
Affiliation(s)
- Lavanya Ajay Sharma
- Department of Anatomy and Structural Biology, Otago School of Medical Sciences, University of Otago, Dunedin, New Zealand
| | | | | |
Collapse
|
27
|
Kim SG, Zheng Y, Zhou J, Chen M, Embree MC, Song K, Jiang N, Mao JJ. Dentin and dental pulp regeneration by the patient's endogenous cells. ACTA ACUST UNITED AC 2013; 28:106-117. [PMID: 24976816 DOI: 10.1111/etp.12037] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The goal of regenerative endodontics is to restore the functions of the dental pulp-dentin complex. Two approaches are being applied toward dental pulp-dentin regeneration: cell transplantation and cell homing. The majority of previous approaches are based on cell transplantation by delivering ex vivo cultivated cells toward dental pulp or dentin regeneration. Many hurdles limit the clinical translation of cell transplantation such as the difficulty of acquiring and isolating viable cells, uncertainty of what cells or what fractions of cells to use, excessive cost of cell manipulation and transportation, and the risk of immune rejection, pathogen transmission, and tumorigenesis in associated with ex vivo cell manipulation. In contrast, cell homing relies on induced chemotaxis of endogenous cells and therefore circumvents many of the difficulties that are associated with cell transplantation. An array of proteins, peptides, and chemical compounds that are yet to be identified may orchestrate endogenous cells to regenerate dental pulp-dentin complex. Both cell transplantation and cell homing are scientifically valid approaches; however, cell homing offers a number of advantages that are compatible with the development of clinical therapies for dental pulp-dentin regeneration.
Collapse
|
28
|
Elnaghy AM, Murray PE, Bradley P, Marchesan M, Namerow KN, Badr AE, El-Hawary YM, Badria FA. Effects of low intensity laser irradiation phototherapy on dental pulp constructs. World J Stomatol 2013; 2:12-17. [DOI: 10.5321/wjs.v2.i1.12] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2012] [Revised: 12/25/2012] [Accepted: 01/21/2013] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate low intensity laser irradiation phototherapy (LILIP) on the proliferation, mineralization and degradation of dental pulp constructs.
METHODS: Stem cells from human exfoliated deciduous teeth (SHED) were grown to confluence and seeded on collagen scaffolds to create dental pulp constructs. LILIP was delivered to the dental pulp constructs using an 830 nm GaAIAs laser at an output power of 20 mW. The LILIP energy density was 0.4, 0.8, 1.2, and 2.4 J/cm2. After 8 d, the cell proliferation and degradation within the dental pulp constructs were measured using histologic criteria. After 28 d, the effect of LILIP on SHED mineralization was assessed by von Kossa staining.
RESULTS: SHED proliferation within the dental pulp constructs varied after exposure to the 0.4, 0.8, 1.2, and 2.4 J/cm2 LILIP energy densities (P < 0.05). The maximum proliferation of SHED in nutrient deficient media was 218% after exposure to a 1.2 J/cm2 LILIP energy density. SHED grown in nutrient deficient media after exposure to a 0.4, 0.8, and 1.2 J/cm2 LILIP energy density, proliferated by 167-218% compared to the untreated (non-LILIP) control group (P < 0.05). SHED exposed to a 0.4, 0.8, and 1.2 J/cm2 LILIP energy density, and grown in optimal nutritional conditions and proliferated by 147%-164% compared to the untreated (non-LILIP) control group (P < 0.05). The exposure of SHED to the highest LILIP energy density (2.4 J/cm2) caused a reduction of the cell proliferation of up to 73% of the untreated (non-LILIP) control (P < 0.05). The amount of mineral produced by SHED increased over time up to 28 d (P < 0.05). The 0.8 and 1.2 J/cm2 LILIP energy densities were the most effective at stimulating the increased the mineralization of the SHED from 150%-700% compared to untreated (non-LILIP) control over 28 d (P < 0.05). The degradation of dental pulp constructs was affected by LILIP (P < 0.05). The dental pulp constructs grown in optimal nutritional conditions exposed to a 0.8 J/cm2 or 1.2 J/cm2 LILIP energy density had 13% to 16% more degradation than the untreated (non-LILIP) control groups (P < 0.05). The other LILIP energy densities caused a 1% degradation of dental pulp constructs in optimal nutritional conditions (P > 0.05).
CONCLUSION: LILIP can enhance or reduce SHED proliferation, degradation and mineralization within dental pulp constructs. LILIP could promote the healing and regeneration of dental tissues.
Collapse
|
29
|
Kim SG, Zhou J, Solomon C, Zheng Y, Suzuki T, Chen M, Song S, Jiang N, Cho S, Mao JJ. Effects of growth factors on dental stem/progenitor cells. Dent Clin North Am 2013; 56:563-75. [PMID: 22835538 DOI: 10.1016/j.cden.2012.05.001] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The primary goal of regenerative endodontics is to restore the vitality and functions of the dentin-pulp complex, as opposed to filing of the root canal with bioinert materials. A myriad of growth factors regulates multiple cellular functions including migration, proliferation, differentiation, and apoptosis of several cell types intimately involved in dentin-pulp regeneration. Recent work showing that growth factor delivery, without cell transplantation, can yield pulp-dentin-like tissues in vivo provides one of the tangible pathways for regenerative endodontics. This review synthesizes knowledge on many growth factors that are known or anticipated to be efficacious in dental pulp-dentin regeneration.
Collapse
Affiliation(s)
- Sahng G Kim
- Center for Craniofacial Regeneration, Columbia University, 630 West 168 Street, PH7E, New York, NY 10032, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Mao JJ, Kim SG, Zhou J, Ye L, Cho S, Suzuki T, Fu SY, Yang R, Zhou X. Regenerative endodontics: barriers and strategies for clinical translation. Dent Clin North Am 2013; 56:639-49. [PMID: 22835543 DOI: 10.1016/j.cden.2012.05.005] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Regenerative endodontics has encountered substantial challenges toward clinical translation. The adoption by the American Dental Association of evoked pulp bleeding in immature permanent teeth is an important step for regenerative endodontics. However, there is no regenerative therapy for most endodontic diseases. Simple recapitulation of cell therapy and tissue engineering strategies that are under development for other organ systems has not led to clinical translation in regeneration endodontics. Recent work using novel biomaterial scaffolds and growth factors that orchestrate the homing of host endogenous cells represents a departure from traditional cell transplantation approaches and may accelerate clinical translation.
Collapse
Affiliation(s)
- Jeremy J Mao
- Center for Craniofacial Regeneration, Columbia University, 630 West 168 Street, PH7E, New York, NY 10032, USA.
| | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Possible Involvement of Smad Signaling Pathways in Induction of Odontoblastic Properties in KN-3 Cells by Bone Morphogenetic Protein-2: A Growth Factor to Induce Dentin Regeneration. Int J Dent 2012; 2012:258469. [PMID: 22505896 PMCID: PMC3299296 DOI: 10.1155/2012/258469] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2011] [Accepted: 12/12/2011] [Indexed: 11/18/2022] Open
Abstract
We examined the effects of bone morphogenetic protein-2 (BMP-2) on growth, differentiation, and intracellular signaling pathways of odontoblast-like cells, KN-3 cells, to clarify molecular mechanisms of odontoblast differentiation during pulp regeneration process. After treatment with BMP-2, the cell morphology, growth, alkaline phosphatase (ALP) activity, and the activation and expression of BMP-induced intracellular signaling molecules, such as Smad1/5/8 and Smad6/7, as well as activities of dentin sialoprotein (DSP) and dentin matrix protein 1 (DMP1), were examined. BMP-2 had no effects on the morphology, growth, or ALP activity of KN-3 cells, whereas it induced the phosphorylation of Smad1/5/8 and expression of Smad6/7. BMP-2 also induced the expressions of DSP and DMP-1. Our results suggest that KN-3 cells may express an odontoblastic phenotype with the addition of BMP-2 through the activation of Smad signaling pathways.
Collapse
|
32
|
Local regeneration of dentin-pulp complex using controlled release of fgf-2 and naturally derived sponge-like scaffolds. Int J Dent 2011; 2012:190561. [PMID: 22174717 PMCID: PMC3227515 DOI: 10.1155/2012/190561] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Accepted: 09/08/2011] [Indexed: 01/09/2023] Open
Abstract
Restorative and endodontic procedures have been recently developed in an attempt to preserve the vitality of dental pulp after exposure to external stimuli, such as caries infection or traumatic injury. When damage to dental pulp is reversible, pulp wound healing can proceed, whereas irreversible damage induces pathological changes in dental pulp, eventually requiring its removal. Nonvital teeth lose their defensive abilities and become severely damaged, resulting in extraction. Development of regeneration therapy for the dentin-pulp complex is important to overcome limitations with presently available therapies. Three strategies to regenerate the dentin-pulp complex have been proposed; regeneration of the entire tooth, local regeneration of the dentin-pulp complex from amputated dental pulp, and regeneration of dental pulp from apical dental pulp or periapical tissues. In this paper, we focus on the local regeneration of the dentin-pulp complex by application of exogenous growth factors and scaffolds to amputated dental pulp.
Collapse
|
33
|
Regeneration Approaches for Dental Pulp and Periapical Tissues with Growth Factors, Biomaterials, and Laser Irradiation. Polymers (Basel) 2011. [DOI: 10.3390/polym3041776] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
|
34
|
Inuyama Y, Kitamura C, Nishihara T, Morotomi T, Nagayoshi M, Tabata Y, Matsuo K, Chen KK, Terashita M. Effects of hyaluronic acid sponge as a scaffold on odontoblastic cell line and amputated dental pulp. J Biomed Mater Res B Appl Biomater 2010; 92:120-8. [PMID: 19802830 DOI: 10.1002/jbm.b.31497] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
It is important to develop a suitable three-dimensional scaffold for the regeneration therapy of dental pulp. In the present study, the effects of hyaluronic acid (HA) sponge on responses of the odontoblastic cell line (KN-3 cells) in vitro, as well as responses of amputated dental pulp of rat molar in vivo, were examined. In vitro, KN-3 cells adhered to the stable structure of HA sponge and that of collagen sponge. In vivo, dental pulp proliferation and vessel invasion were observed in both sponges implanted at dentin defect area above amputated dental pulp, and the cell-rich reorganizing tissue was observed in the dentin defect when HA sponge was implanted as compared with collagen sponge. Expression levels of IL-6 and TNF-alpha in KN-3 cells seeded in HA sponge were nearly the same with those in the cells seeded in collagen sponge, while the numbers (0.67 x 10(3) at 1 week and 0.7 x 10(3) at 3 weeks) of granulated leukocytes that invaded into HA sponge from amputated dental pulp was significantly lower than those (1.22 x 10(3) at 1 week and 1.1 x 10(3) at 3 weeks) of collagen sponge (p < 0.01 at 1 week and p < 0.05 at 3 weeks). These results suggest that HA sponge has an appropriate structure, biocompatibility, and biodegradation for use as a scaffold for dental pulp regeneration.
Collapse
Affiliation(s)
- Yoshio Inuyama
- Division of Pulp Biology, Operative Dentistry, and Endodontics, Department of Cariology and Periodontology, Kyushu Dental College, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Shimabukuro Y, Ueda M, Ozasa M, Anzai J, Takedachi M, Yanagita M, Ito M, Hashikawa T, Yamada S, Murakami S. Fibroblast Growth Factor–2 Regulates the Cell Function of Human Dental Pulp Cells. J Endod 2009; 35:1529-35. [DOI: 10.1016/j.joen.2009.08.010] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2009] [Revised: 08/12/2009] [Accepted: 08/16/2009] [Indexed: 01/09/2023]
|
36
|
Limapornvanich A, Jitpukdeebodintra S, Hengtrakool C, Kedjarune-Leggat U. Bovine serum albumin release from novel chitosan-fluoro-aluminosilicate glass ionomer cement: Stability and cytotoxicity studies. J Dent 2009; 37:686-90. [DOI: 10.1016/j.jdent.2009.05.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2008] [Revised: 03/20/2009] [Accepted: 05/07/2009] [Indexed: 11/30/2022] Open
|
37
|
Ishimatsu H, Kitamura C, Morotomi T, Tabata Y, Nishihara T, Chen KK, Terashita M. Formation of Dentinal Bridge on Surface of Regenerated Dental Pulp in Dentin Defects by Controlled Release of Fibroblast Growth Factor–2 From Gelatin Hydrogels. J Endod 2009; 35:858-65. [DOI: 10.1016/j.joen.2009.03.049] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2009] [Revised: 03/22/2009] [Accepted: 03/28/2009] [Indexed: 01/09/2023]
|
38
|
Dentin phosphophoryn promotes cellular migration of human dental pulp cells. J Endod 2008; 34:575-8. [PMID: 18436037 DOI: 10.1016/j.joen.2008.02.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2007] [Revised: 02/06/2008] [Accepted: 02/12/2008] [Indexed: 11/22/2022]
Abstract
Dentin phosphophoryn (DPP) is a dentin sialophosphoprotein gene product that has an RGD motif and repeat sequences of aspartic acid and phosphoserine. To date, the function of DPP in the early stage of reparative dentin formation still remains unclear. The objective of this study was to evaluate the effects of DPP on pulp cell migration and proliferation. DPP promoted cell migration in a concentration-dependent manner, thus increasing it by about 3-fold at 1000 ng/mL compared with the control, but it had no effect on cell proliferation. Dephosphorylated DPP also promoted cell migration, similarly to DPP. However, cell migration was significantly suppressed by the addition of alphavbeta3 integrin antibody to the medium. Furthermore, porcine DPP-derived RGD peptide, but not its mutant RAD peptide, significantly promoted cell migration. These results indicated that the RGD motif of DPP plays an important role in the migration of human dental pulp cells.
Collapse
|
39
|
Anitua E, Sánchez M, Orive G, Andia I. Delivering growth factors for therapeutics. Trends Pharmacol Sci 2008; 29:37-41. [DOI: 10.1016/j.tips.2007.10.010] [Citation(s) in RCA: 153] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2007] [Revised: 09/24/2007] [Accepted: 10/10/2007] [Indexed: 11/28/2022]
|