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Teawcharoensopa C, Srisuwan T. The potential use of ascorbic acid to recover the cellular senescence of lipopolysaccharide-induced human apical papilla cells: an in vitro study. Clin Oral Investig 2023; 28:49. [PMID: 38153550 DOI: 10.1007/s00784-023-05455-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Accepted: 12/18/2023] [Indexed: 12/29/2023]
Abstract
OBJECTIVES To examine the effect of lipopolysaccharide (LPS) on cellular senescence induction of human apical papilla cells (hAPCs) and evaluate the potential use of 50 μg/ml ascorbic acid to recover cellular senescence and regenerative functions. MATERIALS AND METHODS hAPCs were treated with LPS at 1 and 10 μg/ml either with or without 50 μg/ml ascorbic acid for 48 h. The cellular senescence biomarkers were analyzed by senescence-associated β-galactosidase (SA-β-gal) staining and senescence-related gene expression, p16 and p21. Cell migration, at 12 h and 24 h, was evaluated using a scratch wound assay. Mineralization potential was assessed at 21 days using Alizarin red S staining and dentine sialophosphoprotein (DSPP) and bone sialoprotein (BSP) gene expression. RESULTS 1 μg/ml and 10 μg/ml LPS stimulation for 48 h induced cellular senescence, as shown by remarkable SA-β-gal staining and p16 and p21 gene expression. The percentage of wound closure and mineralized formation was reduced. The co-incubation with ascorbic acid significantly down-regulated the level of SA-β-gal staining. The reduction of senescence-associated gene expressions was observed. Ascorbic acid improved cell migration, mineralized nodule formation, and the expression of DSPP and BSP genes in LPS-treated hAPCs. CONCLUSIONS LPS significantly promoted cellular senescence on hAPCs and diminished the cell function capacity. Co-presence of ascorbic acid could impede cellular senescence and possibly improve the regenerative capacity of LPS-induced senescent hAPCs in vitro. CLINICAL RELEVANCE The data support the in vitro potential benefit of ascorbic acid on cellular senescence recovery of apical papilla cells.
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Affiliation(s)
- Chananporn Teawcharoensopa
- Department of Restorative Dentistry and Periodontology, Faculty of Dentistry, Chiang Mai University, Chiang Mai, TH, Thailand
- Sikhoraphum Hospital Dental Department, Surin, TH, Thailand
| | - Tanida Srisuwan
- Department of Restorative Dentistry and Periodontology, Faculty of Dentistry, Chiang Mai University, Chiang Mai, TH, Thailand.
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Zheng Z, Tang S, Yang T, Wang X, Ding G. Advances in combined application of dental stem cells and small-molecule drugs in regenerative medicine. Hum Cell 2023; 36:1620-1637. [PMID: 37358734 DOI: 10.1007/s13577-023-00943-1] [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: 04/28/2023] [Accepted: 06/19/2023] [Indexed: 06/27/2023]
Abstract
Teeth are a kind of masticatory organs of special histological origin, unique to vertebrates, playing an important role in chewing, esthetics, and auxiliary pronunciation. In the past decades, with the development of tissue engineering and regenerative medicine, the studies of mesenchymal stem cells (MSCs) gradually attracted the interest of researchers. Accordingly, several types of MSCs have been successively isolated in teeth or teeth-related tissues, including dental pulp stem cells, periodontal ligament stem cells, stem cells from human exfoliated deciduous teeth, dental follicle stem cells, stem cells from apical papilla and gingival mesenchymal stem cells. These dental stem cells (DSCs) are easily accessible, possess excellent stem cell characteristics, such as high proliferation rates and profound immunomodulatory properties. Small-molecule drugs are widely used and show great advantages in clinical practice. As research progressed, small-molecule drugs are found to have various complex effects on the characteristics of DSCs, especially the enhancement of biological characteristics of DSCs, which has gradually become a hot issue in the field of DSCs research. This review summarizes the background, current status, existing problems, future research directions, and prospects of the combination of DSCs with three common small-molecule drugs: aspirin, metformin, and berberine.
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Affiliation(s)
- Zejun Zheng
- School of Stomatology, Weifang Medical University, Baotong West Street No. 7166, Weifang, Shandong Province, China
| | - Shuai Tang
- School of Stomatology, Weifang Medical University, Baotong West Street No. 7166, Weifang, Shandong Province, China
| | - Tong Yang
- School of Stomatology, Weifang Medical University, Baotong West Street No. 7166, Weifang, Shandong Province, China
| | - Xiaolan Wang
- School of Stomatology, Weifang Medical University, Baotong West Street No. 7166, Weifang, Shandong Province, China
| | - Gang Ding
- School of Stomatology, Weifang Medical University, Baotong West Street No. 7166, Weifang, Shandong Province, China.
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Effects of Aspirin on Odontogenesis of Human Dental Pulp Cells and TGF-β1 Liberation from Dentin In Vitro. Int J Dent 2022; 2022:3246811. [PMID: 36034475 PMCID: PMC9411001 DOI: 10.1155/2022/3246811] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 07/06/2022] [Indexed: 11/18/2022] Open
Abstract
Aim. This in vitro study aimed to investigate the roles of aspirin (ASA) and its concentrations on the odontogenesis of human dental pulp cells (HDPCs) and to investigate the influence of ASA on TGF-β1 liberation from dentin. Methodology. HDPCs were cultured in a culture medium with 25, 50, 75, 100, and 200 μ·g/mL ASA and 0 μ·g/mL ASA as a control. The mitochondrial activity of HDPCs was assessed using an MTT assay. Crystal violet staining and triton were used to evaluate cell proliferation rates. ALP activity was measured with a fluorometric assay. Expressions of DSP and RUNX2 were determined with the ELISA. DSP and RUNX2 mRNA levels were measured with RT-qPCR. Alizarin red staining was conducted to evaluate the mineralized nodule formation. Dentin slices were submerged in PBS (negative control), 17% EDTA (positive control), and ASA before collecting the solution for TGF-β1 quantification by the ELISA. The data were analyzed by the t-tests and ANOVA, followed by the Tukey post hoc tests.
values < 0.05 were considered statistically significant. Results. The results showed that 25–50 μ·g/mL ASA promoted mitochondrial activity of HDPCs at 72 h (
) and yielded significantly higher proliferation rates of HDPCs than the control at 14d and 21d (
). All concentrations of ASA promoted odontogenic differentiation of HDPCs by enhancing the levels of DSP and RUNX2, their mRNA expression, and mineralization in a dose-dependent manner. Also, ASA yielded significantly higher TGF-β1 liberation after conditioning dentin for 5 min (25, 200 μ·g/mL;
) and 10 min (200 μ·g/mL;
). Conclusions. This in vitro study demonstrated that ASA, especially in high concentrations, promoted the odontogenesis of HDPCs and TGF-β1 liberation from dentin, showing the potential of being incorporated into the novel pulp capping materials for dental tissue regeneration.
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Sonoda S, Yamaza H, Yoshimaru K, Taguchi T, Yamaza T. Protocol to generate xenogeneic-free/serum-free human dental pulp stem cells. STAR Protoc 2022; 3:101386. [PMID: 35592060 PMCID: PMC9112100 DOI: 10.1016/j.xpro.2022.101386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Human dental pulp stem cell (hDPSCs)-based therapy is a feasible option for regenerative medicine, such as dental pulp regeneration. Here, we show the steps needed to colony-forming unit-fibroblasts (CFU-F)-based isolation, expansion, and cryopreservation of hDPSCs for manufacturing clinical-grade products under a xenogeneic-free/serum-free condition. We also demonstrate the characterization of hDPSCs by CFU-F, flow cytometric, and in vitro multipotent assays. For complete details on the use and execution of this protocol, please refer to Iwanaka et al. (2020).
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Affiliation(s)
- Soichiro Sonoda
- Department of Molecular Biology and Oral Anatomy, Kyushu University Graduate School of Dental Science, Fukuoka 812-8582, Japan
| | - Haruyoshi Yamaza
- Department of Pediatric Dentistry, Kyushu University Graduate School of Dental Science, Fukuoka 812-8582, Japan
| | - Koichiro Yoshimaru
- Department of Pediatric Surgery, Kyushu University Graduate School of Medical Sciences, Fukuoka 812-8582, Japan
| | - Tomoaki Taguchi
- Department of Pediatric Surgery, Kyushu University Graduate School of Medical Sciences, Fukuoka 812-8582, Japan.,Fukuoka College of Health Sciences, Fukuoka 814-0193, Japan
| | - Takayoshi Yamaza
- Department of Molecular Biology and Oral Anatomy, Kyushu University Graduate School of Dental Science, Fukuoka 812-8582, Japan
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Sonoda S, Yamaza T. A New Target of Dental Pulp-Derived Stem Cell-Based Therapy on Recipient Bone Marrow Niche in Systemic Lupus Erythematosus. Int J Mol Sci 2022; 23:ijms23073479. [PMID: 35408840 PMCID: PMC8998830 DOI: 10.3390/ijms23073479] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/18/2022] [Accepted: 03/20/2022] [Indexed: 02/04/2023] Open
Abstract
Recent advances in mesenchymal stem/stromal cell (MSC) research have led us to consider the feasibility of MSC-based therapy for various diseases. Human dental pulp-derived MSCs (hDPSCs) have been identified in the dental pulp tissue of deciduous and permanent teeth, and they exhibit properties with self-renewal and in vitro multipotency. Interestingly, hDPSCs exhibit superior immunosuppressive functions toward immune cells, especially T lymphocytes, both in vitro and in vivo. Recently, hDPSCs have been shown to have potent immunomodulatory functions in treating systemic lupus erythematosus (SLE) in the SLE MRL/lpr mouse model. However, the mechanisms underlying the immunosuppressive efficacy of hDPSCs remain unknown. This review aims to introduce a new target of hDPSC-based therapy on the recipient niche function in SLE.
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Zafarmand SS, Karimi-Haghighi S, Salehi MS, Hooshmandi E, Owjfard M, Bayat M, Karimlou S, Pandamooz S, Dianatpour M, Borhani-Haghighi A. Aspirin impacts on stem cells: Implications for therapeutic targets. Tissue Cell 2021; 74:101707. [PMID: 34883315 DOI: 10.1016/j.tice.2021.101707] [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: 09/06/2021] [Revised: 11/30/2021] [Accepted: 12/01/2021] [Indexed: 11/27/2022]
Abstract
Despite the regenerative potential of stem cell therapy in pre-clinical investigations, clinical translation of cell-based therapy has not been completely clarified. In recent years, the importance of lifestyle, patient comorbidities, and prescribed medication has attracted more attention in the efficacy of cell therapy. As a nonsteroidal anti-inflammatory drug, aspirin is one of the most prevalent prescribed medications in the clinic for various disorders. Hence, aspirin treatment might affect the efficacy of stem cell therapy. In this regard, the current review focused on the impacts of aspirin on the viability, proliferation, differentiation, and immunomodulatory properties of stem cells in vitro as well as in experimental animal models.
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Affiliation(s)
| | | | - Mohammad Saied Salehi
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Etrat Hooshmandi
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Maryam Owjfard
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mahnaz Bayat
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sedigheh Karimlou
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sareh Pandamooz
- Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mehdi Dianatpour
- Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Kajiura K, Umemura N, Ohkoshi E, Ohta T, Kondoh N, Kawano S. Shikonin induces odontoblastic differentiation of dental pulp stem cells via AKT-mTOR signaling in the presence of CD44. Connect Tissue Res 2021; 62:689-697. [PMID: 33334200 DOI: 10.1080/03008207.2020.1865937] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Purpose: In our previous study, we demonstrated that hyaluronan induces odontoblastic differentiation of dental pulp stem cells via interactions with CD44. However, it remains unclear whether CD44 expression by dental pulp stem cells is required for odontoblastic differentiation.Methods: We searched for a compound other than hyaluronan that induces odontoblastic differentiation of dental pulp stem cells and used western blotting to determine whether CD44 is involved in the induction of odontoblastic differentiation by the compound. We further validated the cell signaling details of the compound-induced expression of dentin sialophosphoprotein (DSPP), which is known as a marker of odontoblastic differentiation.Results: We investigated shikonin, which is one of the derivatives of naphthoquinone, the skeleton of vitamin K. Shikonin-induced expression of DSPP was inhibited by PI3K, AKT, and mTOR inhibitors. Additionally, shikonin-induced expression of DSPP was inhibited in dental pulp stem cells transfected with siRNA against CD44.Conclusions: Shikonin can stimulate dental pulp stem cells to undergo odontoblastic differentiation through a mechanism involving the AKT-mTOR signaling pathway and CD44. Although expression of CD44 is important for inducing odontoblastic differentiation of dental pulp stem cells, the relationship between the AKT-mTOR signaling pathway and CD44 expression, in the context of shikonin stimulation, has not yet been elucidated. This study suggests that shikonin may be useful for inducing odontoblastic differentiation of dental pulp stem cells, and that it may have clinical applications, including protection of the dental pulp.
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Affiliation(s)
- Kunihiro Kajiura
- Department of Endodontics, Asahi University School of Dentistry, Gifu, Japan
| | - Naoki Umemura
- Department of Oral Biochemistry, Asahi University School of Dentistry, Gifu, Japan
| | - Emika Ohkoshi
- Department of Natural and Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Aomori University, Aomori, Japan
| | - Takahisa Ohta
- Department of Oral and Maxillofacial Surgery, Asahi University School of Dentistry, Gifu, Japan
| | - Nobuo Kondoh
- Department of Oral Biochemistry, Asahi University School of Dentistry, Gifu, Japan
| | - Satoshi Kawano
- Department of Endodontics, Asahi University School of Dentistry, Gifu, Japan
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Xu C, Xie X, Zhao L, Wu Y, Wang J. The critical role of nuclear factor I-C in tooth development. Oral Dis 2021; 28:2093-2099. [PMID: 34637578 DOI: 10.1111/odi.14046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 09/29/2021] [Accepted: 10/07/2021] [Indexed: 02/05/2023]
Abstract
OBJECTIVES Nuclear factor I-C (NFIC) plays a critical role in regulating epithelial-mesenchymal crosstalk during tooth development. However, it remains largely unknown about how NFIC functions in dentin and enamel formation. In the present review, we aim to summarize the most recent discoveries in the field and gain a better understanding of the roles NFIC performs during tooth formation. SUBJECTS AND METHODS Nfic-/- mice exhibit human dentin dysplasia type I (DDI)-like phenotypes signified by enlarged pulp chambers, the presence of short-root anomaly, and failure of odontoblast differentiation. Although loss of NFIC has little effect on molar crown morphology, researchers have detected aberrant microstructures of enamel in the incisors. Recently, accumulating evidence has further uncovered the novel function of NFIC in the process of enamel and dentin formation. RESULTS During epithelial-mesenchyme crosstalk, the expression of NFIC is under the control of SHH-PTCH-SMO-GLI1 pathway. NFIC is closely involved in odontoblast lineage cells proliferation and differentiation, and the maintenance of NFIC protein level in cytoplasm is negatively regulated by TGF-β signaling pathway. In addition, NFIC has mild effect on ameloblast differentiation, enamel mineralization and cementum formation. CONCLUSIONS NFIC plays an important role in tooth development and is required for the formation of dentin, enamel as well as cementum.
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Affiliation(s)
- Chunmei Xu
- State Key Laboratory of Oral Diseases, Department of Periodontics, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xudong Xie
- State Key Laboratory of Oral Diseases, Department of Periodontics, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Lei Zhao
- State Key Laboratory of Oral Diseases, Department of Periodontics, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yafei Wu
- State Key Laboratory of Oral Diseases, Department of Periodontics, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jun Wang
- State Key Laboratory of Oral Diseases, Department of Periodontics, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Xu S, Xie X, Li C, Liu Z, Zuo D. Micromolar sodium fluoride promotes osteo/odontogenic differentiation in dental pulp stem cells by inhibiting PI3K/AKT pathway. Arch Oral Biol 2021; 131:105265. [PMID: 34601318 DOI: 10.1016/j.archoralbio.2021.105265] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/19/2021] [Accepted: 09/12/2021] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Sodium fluoride (NaF) plays an important role in preventing dental caries. However, the regulatory effect of NaF on the committed differentiation of DPSCs is not fully understood. In this study, we characterized the impact of micromolar levels of NaF on the osteo/odontogenic differentiation of DPSCs. DESIGN DPSCs were isolated from healthy human third molars and were cultured in conditioned media with different concentrations of NaF. RNA sequencing (RNA-seq) combined with Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis was used to assess the pathways regulated by NaF. Alkaline phosphatase activity, Alizarin red staining, Western blotting, and real-time qRT-PCR were used to determine the osteo/odontogenic differentiation in DPSCs treated with NaF. RESULTS NaF significantly promoted the osteo/odontogenic differentiation of DPSCs at micromolar levels. Furthermore, RNA-seq and KEGG pathway enrichment analysis indicated that the PI3K/AKT pathway was involved in the pro-osteoclastogenesis effect of NaF. Western blotting analysis exhibited that the phosphorylation of AKT was decreased in NaF-treated DPSCs. Chemical inhibition of the PI3K/AKT pathway abrogated the NaF-promoted DPSCs osteo/odontogenic differentiation. CONCLUSION Micromolar NaF can promote the osteo/odontogenic differentiation of DPSCs by inhibiting the PI3K/AKT pathway. DATA AVAILABILITY The data used to support the findings of this study are available from the corresponding author upon request.
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Affiliation(s)
- Shuaimei Xu
- Department of Endodontics, Stomatological Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China; Department of Medical Laboratory, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Xinghuan Xie
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Changzhou Li
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Zhongjun Liu
- Department of Endodontics, Stomatological Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Daming Zuo
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China.
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Acetylsalicylic Acid Enhanced Neurotrophic Profile of Epidermal Neural Crest Stem Cells: A Possible Approach for the Combination Therapy. PHYSIOLOGY AND PHARMACOLOGY 2021. [DOI: 10.52547/phypha.26.2.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Shoushrah SH, Transfeld JL, Tonk CH, Büchner D, Witzleben S, Sieber MA, Schulze M, Tobiasch E. Sinking Our Teeth in Getting Dental Stem Cells to Clinics for Bone Regeneration. Int J Mol Sci 2021; 22:6387. [PMID: 34203719 PMCID: PMC8232184 DOI: 10.3390/ijms22126387] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/27/2021] [Accepted: 06/02/2021] [Indexed: 12/12/2022] Open
Abstract
Dental stem cells have been isolated from the medical waste of various dental tissues. They have been characterized by numerous markers, which are evaluated herein and differentiated into multiple cell types. They can also be used to generate cell lines and iPSCs for long-term in vitro research. Methods for utilizing these stem cells including cellular systems such as organoids or cell sheets, cell-free systems such as exosomes, and scaffold-based approaches with and without drug release concepts are reported in this review and presented with new pictures for clarification. These in vitro applications can be deployed in disease modeling and subsequent pharmaceutical research and also pave the way for tissue regeneration. The main focus herein is on the potential of dental stem cells for hard tissue regeneration, especially bone, by evaluating their potential for osteogenesis and angiogenesis, and the regulation of these two processes by growth factors and environmental stimulators. Current in vitro and in vivo publications show numerous benefits of using dental stem cells for research purposes and hard tissue regeneration. However, only a few clinical trials currently exist. The goal of this review is to pinpoint this imbalance and encourage scientists to pick up this research and proceed one step further to translation.
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Affiliation(s)
| | | | | | | | | | | | | | - Edda Tobiasch
- Department of Natural Sciences, Bonn-Rhein-Sieg University of Applied Sciences, von-Liebig- Strasse. 20, 53359 Rheinbach, Germany; (S.H.S.); (J.L.T.); (C.H.T.); (D.B.); (S.W.); (M.A.S.); (M.S.)
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