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Aryal YP, Neupane S, Kwak HJ, An CH, Sohn WJ, Yamamoto H, Kwon TY, Min BK, Kim JY, Cho SJ. Unraveling the structure, chemical composition, and conserved signaling in leech teeth. Anim Cells Syst (Seoul) 2024; 28:272-282. [PMID: 38741948 PMCID: PMC11089927 DOI: 10.1080/19768354.2024.2350736] [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: 03/07/2024] [Accepted: 04/29/2024] [Indexed: 05/16/2024] Open
Abstract
Unlike vertebrates, the number of toothed taxa in invertebrates is very few, with leeches being the only tooth-bearing organisms in the phylum Annelida. Copious studies have been conducted regarding vertebrate teeth; however, studies regarding the structure and function of invertebrate teeth are limited. In this study, the tooth structure of leeches, specifically Hirudo nipponia and Haemadipsa rjukjuana, was revealed, which showed sharp and pointed teeth along the apex of three jaws. Understanding conserved signaling regulations among analogous organs is crucial for uncovering the underlying mechanisms during organogenesis. Therefore, to shed light on the evolutionary perspective of odontogenesis to some extent, we conducted de novo transcriptome analyses using embryonic mouse tooth germs, Hirudo teeth, and Helobdella proboscises to identify conserved signaling molecules involved in tooth development. The selection criteria were particularly based on the presence of tooth-related genes in mice, Hirudo teeth, and Helobdella proboscis, wherein 4113 genes were commonly expressed in all three specimens. Furthermore, the chemical nature of leech teeth was also examined via TEM-EDS to compare the chemical composition with vertebrate teeth. The examination of tissue-specific genetic information and chemical nature between leeches and mice revealed chemical similarities between leech and mice teeth, as well as conserved signaling molecules involved in tooth formation, including Ptpro, Prickle2, and Wnt16. Based on our findings, we propose that leech teeth express signaling molecules conserved in mice and these conserved tooth-specific signaling for dental hard tissue formation in mice would corresponds to the structural formation of the toothed jaw in leeches.
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Affiliation(s)
- Yam Prasad Aryal
- Department of Biological Sciences and Biotechnology, College of Natural Sciences, Chungbuk National University, Cheongju, Korea
| | - Sanjiv Neupane
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY, USA
| | - Hee-Jin Kwak
- Department of Biological Sciences and Biotechnology, College of Natural Sciences, Chungbuk National University, Cheongju, Korea
| | - Chang-Hyeon An
- Department of Oral and Maxillofacial Radiology, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Wern-Joo Sohn
- Pre-Major of Cosmetics and Pharmaceutics, Daegu Haany University, Gyeongsan, Korea
| | - Hitoshi Yamamoto
- Department of Histology and Developmental Biology, Tokyo Dental College, Tokyo, Japan
| | - Tae-Yub Kwon
- Department of Dental Biomaterials, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Bong-Ki Min
- Center for Research Facilities, Yeungnam University, Gyeongsan, Korea
| | - Jae-Young Kim
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Sung-Jin Cho
- Department of Biological Sciences and Biotechnology, College of Natural Sciences, Chungbuk National University, Cheongju, Korea
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Aoki H. Generation of iPSCs Using Sendai Virus Vectors. Methods Mol Biol 2024; 2794:121-140. [PMID: 38630225 DOI: 10.1007/978-1-0716-3810-1_11] [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] [Indexed: 04/19/2024]
Abstract
Induced pluripotent stem cells (iPSCs) are in vitro-derived cells capable of giving rise to several different cell types. The generation of iPSCs holds great promise for regenerative medicine and drug discovery research because it allows mature cells to be reprogrammed into a state of pluripotency. These highly versatile cells can then be induced to produce a variety of cell lineages and tissues by activating specific regulatory genes that drive their differentiation along distinct lineages. The great potential of these cells was recognized by Shinya Yamanaka who was awarded the 2012 Nobel Prize for the discovery of iPSCs. Following their discovery, various methods have now been developed for generating iPSCs. Here, we describe a method for deriving iPSCs from human dental pulp using Sendai virus vectors.
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Affiliation(s)
- Hitomi Aoki
- Department of Stem Cell and Regenerative Medicine, Gifu University Graduate School of Medicine, Gifu, Japan.
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3
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Svandova E, Vesela B, Kratochvilova A, Holomkova K, Oralova V, Dadakova K, Burger T, Sharpe P, Lesot H, Matalova E. Markers of dental pulp stem cells in in vivo developmental context. Ann Anat 2023; 250:152149. [PMID: 37574172 DOI: 10.1016/j.aanat.2023.152149] [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: 04/26/2023] [Revised: 07/10/2023] [Accepted: 07/24/2023] [Indexed: 08/15/2023]
Abstract
Teeth and their associated tissues contain several populations of mesenchymal stem cells, one of which is represented by dental pulp stem cells (DPSCs). These cells have mainly been characterised in vitro and numerous positive and negati ve markers for these cells have been suggested. To investigate the presence and localization of these molecules during development, forming dental pulp was examined using the mouse first mandibular molar as a model. The stages corresponding to postnatal (P) days 0, 7, 14, and 21 were investigated. The expression was monitored using customised PCR Arrays. Additionally, in situ localization of the key trio of markers (Cd73, Cd90, Cd105 coded by genes Nt5e, Thy1, Eng) was performed at prenatal and postnatal stages using immunohistochemistry. The expression panel of 24 genes assigned as in vitro markers of DPSCs or mesenchymal stem cells (MSCs) revealed their developmental dynamics during formation of dental pulp mesenchyme. Among the positive markers, Vcam1, Fgf2, Nes were identified as increasing and Cd44, Cd59b, Mcam, Alcam as decreasing between perinatal vs. postnatal stages towards adulthood. Within the panel of negative DPSC markers, Cd14, Itgb2, Ptprc displayed increased and Cd24a decreased levels at later stages of pulp formation. Within the key trio of markers, Nt5e did not show any significant expression difference within the investigated period. Thy1 displayed a strong decrease between P0 and P7 while Eng increased between these stages. In situ localization of Cd73, Cd90 and Cd105 showed them overlap in differentiated odontoblasts and in the sub-odontoblastic layer that is speculated to host odontoblast progenitors. The highly prevalent expression of particularly Cd73 and Cd90 opens the question of potential multiple functions of these molecules. The results from this study add to the in vitro based knowledge by showing dynamics in the expression of DPSC/MSC markers during dental pulp formation in an in vivo context and thus with respect to the natural environment important for commitment of stem cells.
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Affiliation(s)
- Eva Svandova
- Institute of Animal Physiology and Genetics, Brno, Czech Republic; Masaryk University, Brno, Czech Republic
| | - Barbora Vesela
- Institute of Animal Physiology and Genetics, Brno, Czech Republic; Veterinary University, Brno, Czech Republic
| | | | | | - Veronika Oralova
- Institute of Animal Physiology and Genetics, Brno, Czech Republic
| | | | - Tom Burger
- Veterinary University, Brno, Czech Republic
| | - Paul Sharpe
- Institute of Animal Physiology and Genetics, Brno, Czech Republic; King's College London, London, United Kingdom.
| | - Herve Lesot
- Institute of Animal Physiology and Genetics, Brno, Czech Republic
| | - Eva Matalova
- Institute of Animal Physiology and Genetics, Brno, Czech Republic; Veterinary University, Brno, Czech Republic
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Wan L, Wang L, Cheng R, Cheng L, Hu T. Metabolic shift and the effect of mitochondrial respiration on the osteogenic differentiation of dental pulp stem cells. PeerJ 2023; 11:e15164. [PMID: 37101792 PMCID: PMC10124543 DOI: 10.7717/peerj.15164] [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: 11/09/2022] [Accepted: 03/13/2023] [Indexed: 04/28/2023] Open
Abstract
Background Metabolism shifts from glycolysis to mitochondrial oxidative phosphorylation are vital during the differentiation of stem cells. Mitochondria have a direct function in differentiation. However, the metabolic shift and the effect of mitochondria in regulating the osteogenic differentiation of human dental pulp stem cells (hDPSCs) remain unclear. Methods Human dental pulp stem cells were collected from five healthy donors. Osteogenic differentiation was induced by osteogenic induction medium. The activities of alkaline phosphatase, hexokinase, pyruvate kinase, and lactate dehydrogenase were analyzed by enzymatic activity kits. The extracellular acidification rate and the mitochondrial oxygen consumption rate were measured. The mRNA levels of COL-1, ALP, TFAM, and NRF1 were analyzed. The protein levels of p-AMPK and AMPK were detected by western blotting. Results Glycolysis decreased after a slight increase, while mitochondrial oxidative phosphorylation continued to increase when cells grew in osteogenic induction medium. Therefore, the metabolism of differentiating cells switched to mitochondrial respiration. Next, inhibiting mitochondrial respiration with carbonyl cyanide-chlorophenylhydrazone, a mitochondrial uncoupler inhibited hDPSCs differentiation with less ALP activity and decreased ALP and COL-1 mRNA expression. Furthermore, mitochondrial uncoupling led to AMPK activation. 5-Aminoimidazole-4-carboxamide ribonucleotide, an AMPK activator, simulated the effect of mitochondrial uncoupling by inhibiting osteogenic differentiation, mitochondrial biogenesis, and mitochondrial morphology. Mitochondrial uncoupling and activation of AMPK depressed mitochondrial oxidative phosphorylation and inhibited differentiation, suggesting that they may serve as regulators to halt osteogenic differentiation from impaired mitochondrial oxidative phosphorylation.
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Affiliation(s)
- Lingyun Wan
- State Key Laboratory of Oral Diseases, Frontier Innovation Center for Dental Medicine Plus, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Linyan Wang
- Chengdu Second People’s Hospital, Chengdu, Sichuan, China
| | - Ran Cheng
- State Key Laboratory of Oral Diseases, Frontier Innovation Center for Dental Medicine Plus, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Li Cheng
- State Key Laboratory of Oral Diseases, Frontier Innovation Center for Dental Medicine Plus, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Tao Hu
- State Key Laboratory of Oral Diseases, Frontier Innovation Center for Dental Medicine Plus, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
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Choi EJ, Kim CH, Yoon JY, Kim JY, Kim HS, Yoon JU, Cho AR, Kim EJ. Propofol attenuates odontogenic/osteogenic differentiation of human dental pulp stem cells in vitro. J Dent Sci 2022; 17:1604-1611. [PMID: 36299329 PMCID: PMC9588817 DOI: 10.1016/j.jds.2022.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/07/2022] [Indexed: 11/11/2022] Open
Abstract
Background/purpose Various studies have used stem cells in the field of bone tissue engineering to repair bone defects. Dental pulp stem cells (DPSCs) have multipotent properties and can be acquired in a noninvasive manner; therefore, they are frequently used in experiments in regenerative medicine. The objective of this study was to investigate the odontogenic/osteogenic differentiation of human DPSCs (hDPSCs) using propofol, a widely used intravenous anesthetic agent. Materials and methods Alkaline phosphatase (ALP) staining was used to investigate the effects of various concentrations of propofol (5, 20, 50 and 100 μM) on the osteogenic differentiation of hDPSCs. Real-time qPCR and Western blot analysis were used to detect the effect of propofol on the expression of odontogenic/osteogenic genes, such as DMP1, RUNX2, OCN, and BMP2. Odontogenic/osteogenic differentiation of hDPSCs was estimated at days 7 and 14. Results ALP staining of hDPSCs was significantly decreased by propofol treatment. The mRNA expression of DMP1, RUNX2, OCN, and BMP2 decreased after propofol treatment for 14 days. The protein expression of DMP1 and BMP2 was decreased by propofol at days 7 and 14, and that of RUNX2 was decreased by propofol at day 14 only. Conclusion Propofol attenuated odontogenic/osteogenic differentiation of hDPSCs in vitro. This result suggests that propofol, which is widely used for dental sedation, may inhibit the odontogenic/osteogenic differentiation of hDPSCs.
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Lopez-Lozano AP, Arevalo-Niño K, Gutierrez-Puente Y, Montiel-Hernandez JL, Urrutia-Baca VH, Del Angel-Mosqueda C, De la Garza-Ramos MA. SSEA-4 positive dental pulp stem cells from deciduous teeth and their induction to neural precursor cells. Head Face Med 2022; 18:9. [PMID: 35236383 PMCID: PMC8889676 DOI: 10.1186/s13005-022-00313-6] [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] [Received: 08/09/2021] [Accepted: 02/17/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Stage-specific embryonic antigen-4 (SSEA-4) is a marker for the identification of multipotent embryonic cells. It is also positive in neuroepithelial cells, precursor neural cells (NPC), and human dental pulp cells. The aim of this study was to evaluate the potential morphodifferentiation and histodifferentiation to NPC of SSEA-4 positive stem cells from human exfoliated deciduous teeth (SHED). METHODS A SHED population in culture, positive to SSEA-4, was obtained by magnetic cell separation. The cells were characterized by immunohistochemistry and flow cytometry. Subsequently, a neurosphere assay was performed in a medium supplemented with basic fibroblast growth factor (bFGF) and epidermal growth factor (EGF); afterward, cells were neurodifferenciated with a neurobasal medium. Finally, indirect immunohistochemistry was performed to identify neuronal markers. RESULTS The morphological and histological changes in the SSEA-4 positive SHEDs were observed after induction with epidermal and fibroblast growth factors in neurobasal culture medium. At the end of induction, the markers Nestin, TuJ-1, and GFAP were identified. CONCLUSIONS The findings show that SSEA-4 positive SHEDs have a behavior similar to neuronal precursor cells. Our findings indicate that the dental pulp of deciduous teeth is a promising source for regeneration therapies associated with neurodegenerative diseases or peripheral nerve alterations.
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Affiliation(s)
- Ada Pricila Lopez-Lozano
- Facultad de Ciencias Biológicas, Instituto de Biotecnología, Universidad Autónoma de Nuevo León, Nuevo Leon, San Nicolas de los Garza, Mexico.,Unidad de Odontología Integral y Especialidades, Centro de Investigación y Desarrollo en Ciencias de la Salud, Universidad Autonoma de Nuevo Leon, Nuevo Leon, Monterrey, Mexico
| | - Katiushka Arevalo-Niño
- Facultad de Ciencias Biológicas, Instituto de Biotecnología, Universidad Autónoma de Nuevo León, Nuevo Leon, San Nicolas de los Garza, Mexico
| | - Yolanda Gutierrez-Puente
- Facultad de Ciencias Biológicas, Instituto de Biotecnología, Universidad Autónoma de Nuevo León, Nuevo Leon, San Nicolas de los Garza, Mexico
| | - Jose Luis Montiel-Hernandez
- Facultad De Farmacia, Coordinacion De Posgrado, Universidad Autonoma del Estado de Morelos, Morelos, Cuernavaca, Mexico
| | - Victor Hugo Urrutia-Baca
- Unidad de Odontología Integral y Especialidades, Centro de Investigación y Desarrollo en Ciencias de la Salud, Universidad Autonoma de Nuevo Leon, Nuevo Leon, Monterrey, Mexico
| | | | - Myriam Angelica De la Garza-Ramos
- Facultad de Ciencias Biológicas, Instituto de Biotecnología, Universidad Autónoma de Nuevo León, Nuevo Leon, San Nicolas de los Garza, Mexico. .,Unidad de Odontología Integral y Especialidades, Centro de Investigación y Desarrollo en Ciencias de la Salud, Universidad Autonoma de Nuevo Leon, Nuevo Leon, Monterrey, Mexico. .,Facultad de Odontología, Universidad Autonoma de Nuevo Leon, Nuevo Leon, Monterrey, Mexico. .,Facultad de Odontología/CIDICS, Universidad Autonoma de Nuevo Leon Monterrey, San Nicolás de los Garza, Mexico.
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7
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Rong W, Rome C, Yao S. Increased Expression of miR-7a-5p and miR-592 during Expansion of Rat Dental Pulp Stem Cells and Their Implication in Osteogenic Differentiation. Cells Tissues Organs 2022; 211:41-56. [PMID: 34530424 PMCID: PMC8766878 DOI: 10.1159/000519600] [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: 04/03/2021] [Accepted: 09/12/2021] [Indexed: 01/03/2023] Open
Abstract
Dental pulp stem cells (DPSCs) possess strong osteogenic differentiation potential and are promising cell sources in regenerative medicine. However, such differentiation capacity progressively declines during their in vitro expansion. MicroRNAs (miRNAs) play important roles in modulating stem cell differentiation. This study aimed (1) to determine if miR-7a-5p and miR-592 are involved in maintaining and regulating osteogenic differentiation of DPSCs, and (2) to explore their potential regulatory pathways. We found that the expression of miR-7a-5p and miR-592 was significantly upregulated during the expansion of rat DPSCs (rDPSCs). Overexpression of these miRNAs inhibited the osteogenic/odontogenic differentiation of rDPSCs, as evidenced by calcium deposition and osteogenic/odontogenic gene expression. RT-qPCR determined that miR-592 could downregulate heat shock protein B8, whose expression is reduced during the expansion of rDPSCs. Furthermore, RNA-seq and bioinformatics analysis identified significant signaling pathways of miR-7a-5p and miR-592 in regulating osteogenic differentiation, including TNF, MAPK, and PI3K-Akt pathways. We conclude that upregulating miR-7a-5p and miR-592 suppresses the osteogenic differentiation of rDPSCs during their in vitro expansion, likely via TNF, MAPK, and PI3K-Akt pathways. The results may shed light on application of miR-7a-5p and miR-592 for maintaining osteo-differentiation potential in stem cells for bone regeneration and bone-related disease treatment.
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Affiliation(s)
| | | | - Shaomian Yao
- Corresponding author: Shaomian Yao, Ph.D., Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA, Tel: +1-225-578-9889, Fax: +1-225-578-9895,
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8
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Shimizu Y, Takeda-Kawaguchi T, Kuroda I, Hotta Y, Kawasaki H, Hariyama T, Shibata T, Akao Y, Kunisada T, Tatsumi J, Tezuka KI. Exosomes from dental pulp cells attenuate bone loss in mouse experimental periodontitis. J Periodontal Res 2021; 57:162-172. [PMID: 34826339 DOI: 10.1111/jre.12949] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 10/12/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND OBJECTIVE Exosomes are small vesicles secreted from many cell types. Their biological effects largely depend on their cellular origin and the physiological state of the originating cells. Exosomes secreted by mesenchymal stem cells exert therapeutic effects against multiple diseases and may serve as potential alternatives to stem cell therapies. We previously established and characterized human leukocyte antigen (HLA) haplotype homo (HHH) dental pulp cell (DPC) lines from human wisdom teeth. In this study, we aimed to investigate the effect of local administration of HHH-DPC exosomes in a mouse model of periodontitis. METHODS Exosomes purified from HHH-DPCs were subjected to particle size analysis, and expression of exosome markers was confirmed by western blotting. We also confirmed the effect of exosomes on the migration of both HHH-DPCs and mouse osteoblastic MC3T3-E1 cells. A mouse experimental periodontitis model was used to evaluate the effect of exosomes in vivo. The morphology of alveolar bone was assessed by micro-computed tomography (μCT) and histological analysis. The effect of exosomes on osteoclastogenesis was evaluated using a co-culture system. RESULTS The exosomes purified from HHH-DPCs were homogeneous and had a spherical membrane structure. HHH-DPC exosomes promoted the migration of both human DPCs and mouse osteoblastic cells. The MTT assay showed a positive effect on the proliferation of human DPCs, but not on mouse osteoblastic cells. Treatment with HHH-DPC exosomes did not alter the differentiation of osteoblastic cells. Imaging with µCT revealed that the exosomes suppressed alveolar bone resorption in the mouse model of periodontitis. Although no change was apparent in the dominance of TRAP-positive osteoclast-like cells in decalcified tissue sections upon exosome treatment, HHH-DPC exosomes significantly suppressed osteoclast formation in vitro. CONCLUSIONS HHH-DPC exosomes stimulated the migration of human DPCs and mouse osteoblastic cells and effectively attenuated bone loss due to periodontitis.
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Affiliation(s)
- Yuta Shimizu
- Division of Oral Infections and Health Sciences, Department of Periodontology, Asahi University School of Dentistry, Gifu, Japan
| | - Tomoko Takeda-Kawaguchi
- Department of Oral Maxillofacial Surgery, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Izumi Kuroda
- Department of Stem Cell and Regenerative Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yasuaki Hotta
- Central Research Institute of Oral Science, Asahi University School of Dentistry, Gifu, Japan
| | - Hideya Kawasaki
- Institute for NanoSuit Research, Preeminent Medical Photonics Education & Research Center, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Takahiko Hariyama
- Institute for NanoSuit Research, Preeminent Medical Photonics Education & Research Center, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Toshiyuki Shibata
- Department of Oral Maxillofacial Surgery, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yukihiro Akao
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Takahiro Kunisada
- Department of Stem Cell and Regenerative Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Junichi Tatsumi
- Division of Oral Infections and Health Sciences, Department of Periodontology, Asahi University School of Dentistry, Gifu, Japan
| | - Ken-Ichi Tezuka
- Department of Stem Cell and Regenerative Medicine, Gifu University Graduate School of Medicine, Gifu, Japan.,Center for Highly Advanced Integration of Nano and Life Sciences, Gifu University (G-CHAIN), Gifu, Japan
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Liu Y, Gan L, Cui DX, Yu SH, Pan Y, Zheng LW, Wan M. Epigenetic regulation of dental pulp stem cells and its potential in regenerative endodontics. World J Stem Cells 2021; 13:1647-1666. [PMID: 34909116 PMCID: PMC8641018 DOI: 10.4252/wjsc.v13.i11.1647] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 06/07/2021] [Accepted: 11/03/2021] [Indexed: 02/06/2023] Open
Abstract
Regenerative endodontics (RE) therapy means physiologically replacing damaged pulp tissue and regaining functional dentin–pulp complex. Current clinical RE procedures recruit endogenous stem cells from the apical papilla, periodontal tissue, bone marrow and peripheral blood, with or without application of scaffolds and growth factors in the root canal space, resulting in cementum-like and bone-like tissue formation. Without the involvement of dental pulp stem cells (DPSCs), it is unlikely that functional pulp regeneration can be achieved, even though acceptable repair can be acquired. DPSCs, due to their specific odontogenic potential, high proliferation, neurovascular property, and easy accessibility, are considered as the most eligible cell source for dentin–pulp regeneration. The regenerative potential of DPSCs has been demonstrated by recent clinical progress. DPSC transplantation following pulpectomy has successfully reconstructed neurovascularized pulp that simulates the physiological structure of natural pulp. The self-renewal, proliferation, and odontogenic differentiation of DPSCs are under the control of a cascade of transcription factors. Over recent decades, epigenetic modulations implicating histone modifications, DNA methylation, and noncoding (nc)RNAs have manifested as a new layer of gene regulation. These modulations exhibit a profound effect on the cellular activities of DPSCs. In this review, we offer an overview about epigenetic regulation of the fate of DPSCs; in particular, on the proliferation, odontogenic differentiation, angiogenesis, and neurogenesis. We emphasize recent discoveries of epigenetic molecules that can alter DPSC status and promote pulp regeneration through manipulation over epigenetic profiles.
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Affiliation(s)
- Ying Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Lu Gan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Di-Xin Cui
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Si-Han Yu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Yue Pan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Li-Wei Zheng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Mian Wan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China
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10
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Microstructured Hyaluronic Acid Hydrogel for Tooth Germ Bioengineering. Gels 2021; 7:gels7030123. [PMID: 34449604 PMCID: PMC8395742 DOI: 10.3390/gels7030123] [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: 07/07/2021] [Revised: 08/07/2021] [Accepted: 08/11/2021] [Indexed: 12/30/2022] Open
Abstract
Tooth loss has been found to adversely affect not just masticatory and speech functions, but also psychological health and quality of life. Currently, teeth replacement options include dentures, bridges, and implants. However, these artificial replacement options remain inferior to biological replacements due to their reduced efficiency, the need for replacements, and the risk of immunological rejection. To this end, there has been a heightened interest in the bioengineering of teeth in recent years. While there have been reports of successfully regenerated teeth, controlling the size and shape of bioengineered teeth remains a challenge. In this study, methacrylated hyaluronic acid (MeHA) was synthesized and microstructured in a hydrogel microwell array using soft lithography. The resulting MeHA hydrogel microwell scaffold resembles the shape of a naturally developing human tooth germ. To facilitate the epithelial-mesenchymal interactions, human adult low calcium high temperature (HaCaT) cells were seeded on the surface of the hydrogels and dental pulp stem cells (DPSCs) were encapsulated inside the hydrogels. It was found that hydrogel scaffolds were able to preserve the viability of both types of cells and they appeared to favor signaling between epithelial and mesenchymal cells, which is necessary in the promotion of cell proliferation. As such, the hydrogel scaffolds offer a promising system for the bioengineering of human tooth germs in vitro.
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11
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Effect of Inducible BMP-7 Expression on the Osteogenic Differentiation of Human Dental Pulp Stem Cells. Int J Mol Sci 2021; 22:ijms22126182. [PMID: 34201124 PMCID: PMC8229115 DOI: 10.3390/ijms22126182] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/31/2021] [Accepted: 06/04/2021] [Indexed: 12/19/2022] Open
Abstract
BMP-7 has shown inductive potential for in vitro osteogenic differentiation of mesenchymal stem cells, which are an ideal resource for regenerative medicine. Externally applied, recombinant BMP-7 was able to induce the osteogenic differentiation of DPSCs but based on our previous results with BMP-2, we aimed to study the effect of the tetracyclin-inducible BMP-7 expression on these cells. DPSC, mock, and DPSC-BMP-7 cell lines were cultured in the presence or absence of doxycycline, then alkaline phosphatase (ALP) activity, mineralization, and mRNA levels of different osteogenic marker genes were measured. In the DPSC-BMP-7 cell line, the level of BMP-7 mRNA significantly increased in the media supplemented with doxycycline, however, the expression of Runx2 and noggin genes was upregulated only after 21 days of incubation in the osteogenic medium with doxycycline. Moreover, while the examination of ALP activity showed reduced activity in the control medium containing doxycycline, the accumulation of minerals remained unchanged in the cultures. We have found that the induced BMP-7 expression failed to induce osteogenic differentiation of DPSCs. We propose three different mechanisms that may worth investigating for the engineering of expression systems that can be used for the induction of differentiation of mesenchymal stem cells.
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Flanagan M, Pathak I, Gan Q, Winter L, Emnet R, Akel S, Montaño AM. Umbilical mesenchymal stem cell-derived extracellular vesicles as enzyme delivery vehicle to treat Morquio A fibroblasts. Stem Cell Res Ther 2021; 12:276. [PMID: 33957983 PMCID: PMC8101245 DOI: 10.1186/s13287-021-02355-0] [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: 02/25/2021] [Accepted: 04/26/2021] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Mucopolysaccharidosis IVA (Morquio A syndrome) is a lysosomal storage disease caused by the deficiency of enzyme N-acetylgalactosamine-6-sulfate sulfatase (GALNS), which results in the accumulation of the glycosaminoglycans (GAGs), keratan sulfate, and chondroitin-6-sulfate in the lysosomes of all tissues causing systemic dysfunction. Current treatments include enzyme replacement therapy (ERT) which can treat only certain aspects of the disease such as endurance-related biological endpoints. A key challenge in ERT is ineffective enzyme uptake in avascular tissues, which makes the treatment of the corneal, cartilage, and heart valvular tissue difficult. The aim of this study was to culture human umbilical mesenchymal stem cells (UMSC), demonstrate presence of GALNS enzyme activity within the extracellular vesicles (EVs) derived from these UMSC, and study how these secreted EVs are taken up by GALNS-deficient cells and used by the deficient cell's lysosomes. METHODS We obtained and cultured UMSC from the umbilical cord tissue from anonymous donors from the Saint Louis Cord Blood Bank. We characterized UMSC cell surface markers to confirm phenotype by cell sorting analyses. In addition, we confirmed that UMSC secrete GALNS enzyme creating conditioned media for co-culture experiments with GALNS deficient cells. Lastly, we isolated EVs derived from UMSC by ultracentrifugation to confirm source of GALNS enzyme. RESULTS Co-culture and confocal microscopy experiments indicated that the lysosomal content from UMSC migrated to deficient cells as evidenced by the peak signal intensity occurring at 15 min. EVs released by UMSC were characterized indicating that the EVs contained the active GALNS enzyme. Uptake of GALNS within EVs by deficient fibroblasts was not affected by mannose-6-phosphate (M6P) inhibition, suggesting that EV uptake by these fibroblasts is gradual and might be mediated by a different means than the M6P receptor. CONCLUSIONS UMSC can deliver EVs containing functional GALNS enzyme to deficient cells. This enzyme delivery method, which was unaffected by M6P inhibition, can function as a novel technique for reducing GAG accumulation in cells in avascular tissues, thereby providing a potential treatment option for Morquio A syndrome.
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Affiliation(s)
- Michael Flanagan
- Department of Pediatrics, School of Medicine, Saint Louis University, 1100 South Grand Blvd., Room 313, St. Louis, MO, 63104, USA
| | - Isha Pathak
- School of Medicine, Saint Louis University, Saint Louis, Missouri, USA
| | - Qi Gan
- Department of Pediatrics, School of Medicine, Saint Louis University, 1100 South Grand Blvd., Room 313, St. Louis, MO, 63104, USA
| | - Linda Winter
- Department of Pediatrics, School of Medicine, Saint Louis University, 1100 South Grand Blvd., Room 313, St. Louis, MO, 63104, USA
| | - Ryan Emnet
- St. Louis Cord Blood Bank, SSM Cardinal Glennon Children's Medical Center, St Louis, MO, USA
| | - Salem Akel
- St. Louis Cord Blood Bank, SSM Cardinal Glennon Children's Medical Center, St Louis, MO, USA
| | - Adriana M Montaño
- Department of Pediatrics, School of Medicine, Saint Louis University, 1100 South Grand Blvd., Room 313, St. Louis, MO, 63104, USA.
- Department of Biochemistry and Molecular Biology, School of Medicine, Saint Louis University, Saint Louis, Missouri, USA.
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Investigation of PPAR β/ δ within Human Dental Pulp Cells: A Preliminary In Vitro Study. PPAR Res 2021; 2021:8854921. [PMID: 33790957 PMCID: PMC7997762 DOI: 10.1155/2021/8854921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 01/15/2021] [Accepted: 02/17/2021] [Indexed: 11/17/2022] Open
Abstract
Controlling the inflammatory response to restore tissue homeostasis is a crucial step to maintain tooth vitality after pathogen removal from caries-affected dental tissues. The nuclear peroxisome proliferator-activated receptor beta/delta (PPARβ/δ) is a ligand-activated transcription factor with emerging anti-inflammatory roles in many cells and tissues. However, its expression and functions are poorly understood in human dental pulp cells (hDPCs). Thus, this study evaluated PPARβ/δ expression and assessed the anti-inflammatory effects evoked by activation of PPARβ/δ in lipopolysaccharide- (LPS-) induced hDPCs. Our results showed that hDPCs constitutively expressed PPARβ/δ mRNA/protein, and treatment with LPS increased PPARβ/δ mRNA expression. The selective PPARβ/δ agonist GW0742 significantly decreased inflammation-related mRNA expression in hDPCs (IL6, IL1β, TNFα, MMP1, and MMP2) and RAW264.7 cells (Il6 and Tnfα). Further, PPARβ/δ agonist attenuated MMP2/9 gelatinolytic activity in hDPCs. Previously LPS-conditioned hDPCs increased the migration of RAW264.7 cells through the membrane of a Transwell coculture system. Conversely, pretreatment with GW0742 markedly decreased macrophage recruitment. These findings provide among the first evidence that hDPCs express PPARβ/δ. In addition, they suggest that activation of PPARβ/δ by GW0742 can attenuate some cellular and molecular in vitro aspects related to the inflammatory process, pointing out to investigate its potential target role in dental pulp inflammation.
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Birant S, Gokalp M, Duran Y, Koruyucu M, Akkoc T, Seymen F. Cytotoxicity of NeoMTA Plus, ProRoot MTA and Biodentine on human dental pulp stem cells. J Dent Sci 2020; 16:971-979. [PMID: 34141112 PMCID: PMC8189880 DOI: 10.1016/j.jds.2020.10.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/22/2020] [Indexed: 12/19/2022] Open
Abstract
Background/purpose Dental pulp stem cells (DPSCs) play a crucial role in the tissue healing process through odontoblast like cell differentiation. The aim of this study was to evaluate the biocompatibility and compare the potential invitro cytotoxic effects of NeoMTA Plus, ProRootMTA and Biodentine on human dental pulp stem cells (hDPSCs). Materials and methods To assess the effects of NeoMTA Plus, ProRoot MTA and Biodentine extracts at 1st, 3rd and 7th d on hDPCs, cell populations was determined by flow cytometry using an Annexin V detection kit. The data were analyzed statistically using the Kruskal–Wallis test. A p < 0.05 was considered as statistically significant. Results All groups showed cell viability similar to that of the control group on 1st, 3rd and 7th d. Although Biodentine exhibited higher cell viability rates than the other material groups, no statistically significant differences were noted between the sampled days (p > 0.05). Conclusion All materials extracts are not cytotoxic and do not induce apoptosis in the hDPSCs. These results suggest that all the tested materials can lead to positive outcomes when used as reparative biomaterials.
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Affiliation(s)
- Sinem Birant
- Istanbul University-Cerrahpasa, Faculty of Dentistry, Department of Pedodontics, Istanbul Turkey
| | - Muazzez Gokalp
- Marmara University, Faculty of Medicine, Department of Pediatric Allergy-Immunology, Istanbul, Turkey
| | - Yazgul Duran
- Marmara University, Faculty of Medicine, Department of Pediatric Allergy-Immunology, Istanbul, Turkey
| | - Mine Koruyucu
- Istanbul University, Faculty of Dentistry, Department of Pedodontics, Istanbul Turkey
| | - Tunc Akkoc
- Marmara University, Faculty of Medicine, Department of Pediatric Allergy-Immunology, Istanbul, Turkey
| | - Figen Seymen
- Istanbul University, Faculty of Dentistry, Department of Pedodontics, Istanbul Turkey
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15
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Investigation of the effect of a time delay on the characteristics and survival of dental pulp stem cells from extracted teeth. Arch Oral Biol 2020; 119:104896. [PMID: 32932148 DOI: 10.1016/j.archoralbio.2020.104896] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 08/29/2020] [Accepted: 08/30/2020] [Indexed: 11/21/2022]
Abstract
OBJECTIVES This study investigates the post-extraction storage period of human dental pulp stem cells (hDPSCs) for stem cell banking by investigating the viability, function, mineralization, and gene expression of hDPSCs isolated from extracted teeth after 1 h, 6 h and 24 h post-tooth extraction. DESIGN hDPSCs were extracted from the pulp of impacted third molar teeth after 1 h, 6 h, and 24 h after extraction. The mesenchymal stem cell (MSCs) properties of three groups of cells were analyzed using flow cytometry. Cell morphology and proliferation were analyzed using a light microscope and an MTT assay. The viability, function, mineralization, and gene expression of hDPSCs of 1 h, 6 h, and 24 h groups were also assessed. RESULTS The delayed harvesting of hDPSCs for 1, 6 or 24 h caused a 31 % reduction in mineral nodule formation and a reduction in the gene expression of osteocalcin (OCN) and vascular endothelial growth factor-alpha (VEGFA). However, the 1, 6 or 24 h, time delay had little effect on MTT cell proliferation, cell viability or morphology. The delayed of harvesting of hDPSCs for 1, 6 or 24 h also had little effect on the expression of MSCs positive (CD44, CD106, CD90) or negative surface markers (CD45 and CD11b). CONCLUSIONS Our results suggest that a 24 h delay in harvesting hDPSCs from extracted teeth can reduce their mineralization and gene activity but does not markedly reduce survival. Quicker hDPSCs harvesting is likely to yield more useful hDPSCs for experimentation and clinical treatment.
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Sui B, Wu D, Xiang L, Fu Y, Kou X, Shi S. Dental Pulp Stem Cells: From Discovery to Clinical Application. J Endod 2020; 46:S46-S55. [DOI: 10.1016/j.joen.2020.06.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Yoshida S, Tomokiyo A, Hasegawa D, Hamano S, Sugii H, Maeda H. Insight into the Role of Dental Pulp Stem Cells in Regenerative Therapy. BIOLOGY 2020; 9:biology9070160. [PMID: 32659896 PMCID: PMC7407391 DOI: 10.3390/biology9070160] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 07/02/2020] [Accepted: 07/05/2020] [Indexed: 02/07/2023]
Abstract
Mesenchymal stem cells (MSCs) have the capacity for self-renewal and multilineage differentiation potential, and are considered a promising cell population for cell-based therapy and tissue regeneration. MSCs are isolated from various organs including dental pulp, which originates from cranial neural crest-derived ectomesenchyme. Recently, dental pulp stem cells (DPSCs) and stem cells from human exfoliated deciduous teeth (SHEDs) have been isolated from dental pulp tissue of adult permanent teeth and deciduous teeth, respectively. Because of their MSC-like characteristics such as high growth capacity, multipotency, expression of MSC-related markers, and immunomodulatory effects, they are suggested to be an important cell source for tissue regeneration. Here, we review the features of these cells, their potential to regenerate damaged tissues, and the recently acquired understanding of their potential for clinical application in regenerative medicine.
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Affiliation(s)
- Shinichiro Yoshida
- Department of Endodontology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (A.T.); (D.H.); (H.S.); (H.M.)
- Correspondence: ; Tel.: +81-92-642-6432
| | - Atsushi Tomokiyo
- Department of Endodontology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (A.T.); (D.H.); (H.S.); (H.M.)
| | - Daigaku Hasegawa
- Department of Endodontology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (A.T.); (D.H.); (H.S.); (H.M.)
| | - Sayuri Hamano
- OBT Research Center, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan;
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Hideki Sugii
- Department of Endodontology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (A.T.); (D.H.); (H.S.); (H.M.)
| | - Hidefumi Maeda
- Department of Endodontology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (A.T.); (D.H.); (H.S.); (H.M.)
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Shi X, Mao J, Liu Y. Pulp stem cells derived from human permanent and deciduous teeth: Biological characteristics and therapeutic applications. Stem Cells Transl Med 2020; 9:445-464. [PMID: 31943813 PMCID: PMC7103623 DOI: 10.1002/sctm.19-0398] [Citation(s) in RCA: 107] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 12/27/2019] [Indexed: 12/13/2022] Open
Abstract
Human pulp stem cells (PSCs) include dental pulp stem cells (DPSCs) isolated from dental pulp tissues of human extracted permanent teeth and stem cells from human exfoliated deciduous teeth (SHED). Depending on their multipotency and sensitivity to local paracrine activity, DPSCs and SHED exert therapeutic applications at multiple levels beyond the scope of the stomatognathic system. This review is specifically concentrated on PSC-updated biological characteristics and their promising therapeutic applications in (pre)clinical practice. Biologically, distinguished from conventional mesenchymal stem cell markers in vitro, NG2, Gli1, and Celsr1 have been evidenced as PSC markers in vivo. Both perivascular cells and glial cells account for PSC origin. Therapeutically, endodontic regeneration is where PSCs hold the most promises, attributable of PSCs' robust angiogenic, neurogenic, and odontogenic capabilities. More recently, the interplay between cell homing and liberated growth factors from dentin matrix has endowed a novel approach for pulp-dentin complex regeneration. In addition, PSC transplantation for extraoral tissue repair and regeneration has achieved immense progress, following their multipotential differentiation and paracrine mechanism. Accordingly, PSC banking is undergoing extensively with the intent of advancing tissue engineering, disease remodeling, and (pre)clinical treatments.
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Affiliation(s)
- Xin Shi
- Center of Stomatology, Tongji Hospital of Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanPeople's Republic of China
| | - Jing Mao
- Center of Stomatology, Tongji Hospital of Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanPeople's Republic of China
| | - Yan Liu
- Laboratory of Biomimetic Nanomaterials, Department of OrthodonticsPeking University School and Hospital of StomatologyBeijingPeople's Republic of China
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Li QM, Li JL, Feng ZH, Lin HC, Xu Q. Effect of histone demethylase KDM5A on the odontogenic differentiation of human dental pulp cells. Bioengineered 2020; 11:449-462. [PMID: 32208897 PMCID: PMC7161540 DOI: 10.1080/21655979.2020.1743536] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Human dental pulp cells (hDPCs) possess the capacity to differentiate into odontoblast-like cells in response to exogenous stimuli. Histone methylation is one of the most robust epigenetic marks and is essential for the regulation of multiple cellular processes. Previous studies have shown that histone methyltransferases (HMTs) and histone demethylases (HDMs) are crucial for the osteogenic differentiation of human bone marrow, adipose tissue, and tooth tissue. However, little is known about the role of histone methylation in hDPC differentiation. Here, the expression levels of HMTs and HDMs were profiled in hDPCs undergoing odontogenic induction. Among several differentially expressed enzymes, HDM KDM5A demonstrated significantly enhanced expression during cytodifferentiation. Furthermore, KDM5A expression increased during early passages and in a time-dependent manner during odontogenic induction. Using a shRNA-expressing lentivirus, KDM5A was knocked down in hDPCs. KDM5A depletion resulted in greater alkaline phosphatase activity and more mineral deposition formation. Meanwhile, the expression levels of the odontogenic markers DMP1, DSPP, OSX, and OCN were increased by KDM5A knockdown. As a histone demethylase specific for tri- and dimethylated histone H3 at lysine 4 (H3K4me3/me2), KDM5A deficiency led to a significant increment in total H3K4me3 levels, whereas no significant difference was found for H3K4 me2. H3K4me3 levels on the promoters of the odontogenic markers increased after KDM5A knockdown in hDPCs. These results demonstrated that KDM5A is present in hDPCs and inhibits the odontogenic differentiation potentiality of hDPCs by removing H3K4me3 from specific gene promoters, suggesting that KDM5A-dependent histone demethylation may play an important role in reparative dentinogenesis.
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Affiliation(s)
- Qi-Meng Li
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
| | - Jin-Ling Li
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China.,Guangdong Provincial Hospital of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, P.R. China
| | - Zhi-Hui Feng
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
| | - Huan-Cai Lin
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
| | - Qiong Xu
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
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20
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Tóth F, Gáll JM, Tőzsér J, Hegedűs C. Effect of inducible bone morphogenetic protein 2 expression on the osteogenic differentiation of dental pulp stem cells in vitro. Bone 2020; 132:115214. [PMID: 31884130 DOI: 10.1016/j.bone.2019.115214] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 12/17/2019] [Accepted: 12/23/2019] [Indexed: 01/09/2023]
Abstract
Bone morphogenetic protein 2 (BMP-2) is a member of the transforming growth factor-β superfamily, it is known to be a factor involved in skeletal development and capable of inducing in vitro osteogenic differentiation of mesenchymal stem cells (MSCs). Dental pulp stem cells (DPSCs) isolated from extracted third molar teeth are an ideal resource for bone tissue engineering and regeneration applications, due to their convenient isolation, safe cryopreservation, and easy maintenance in cell cultures. The aims of this study were to deliver BMP-2 under control of the tetracycline-inducible (tet-on) promoter into dental pulp stem cells and to examine whether these BMP-2 expressing cell lines are capable of promoting osteogenic differentiation in vitro. BMP-2 gene was cloned into the lentiviral transfer plasmid pTet-IRES-EGFP and used to establish the DPSC-BMP-2 cell line. DPSC, DPSC-GFP (mock) and DPSC-BMP-2 cell lines were cultured in growth medium or osteogenic medium in the presence or absence of 100 ng/ml doxycycline. To assess differentiation, alkaline phosphatase activity, calcium accumulation and gene transcription levels of different genes involved in osteogenic differentiation (BMP-2, Runx2, alkaline phosphatase, and noggin) were measured. Doxycycline-induced BMP-2 expression induced the differentiation of DPSCs into the preosteoblastic stage but could not favor the further maturation into osteoblasts and osteocytes. We found that while Runx2 gene transcription was continuously upregulated in doxycycline-treated DPSC-BMP-2 cells, the alkaline phosphatase activity and the accumulation of minerals were reduced. As a result of the increased BMP-2 expression, the transcription level of the BMP antagonist noggin was also upregulated, and probably caused the observed effects regarding alkaline phosphatase (ALP) activity and mineral deposition. Our study shows that this system is effective in controlling transgene expression in DPSC cell line. Exploration of all known factors affecting osteogenic differentiation and their interactions is of major importance for the field of regenerative medicine. As the metabolic reaction to the upregulated transgene transcription appears to be cell line-specific, a wrongly selected target gene and/or regulation system could have adverse effects on differentiation.
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Affiliation(s)
- Ferenc Tóth
- Department of Biomaterials and Prosthetic Dentistry, Faculty of Dentistry, University of Debrecen, Debrecen, Hungary.
| | - József M Gáll
- Department of Applied Mathematics and Probability Theory, Faculty of Informatics, University of Debrecen, Debrecen, Hungary.
| | - József Tőzsér
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.
| | - Csaba Hegedűs
- Department of Biomaterials and Prosthetic Dentistry, Faculty of Dentistry, University of Debrecen, Debrecen, Hungary.
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Looking into dental pulp stem cells in the therapy of photoreceptors and retinal degenerative disorders. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2019; 203:111727. [PMID: 31862637 DOI: 10.1016/j.jphotobiol.2019.111727] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 11/13/2019] [Accepted: 12/02/2019] [Indexed: 01/09/2023]
Abstract
Blindness and vision impairment are caused by irremediable retinal degeneration in affected individuals worldwide. Cell therapy for a retinal replacement can potentially rescue their vision, specifically for those who lost the light sensing photoreceptors in the eye. As such, well-characterized retinal cells are required for the replacement purposes. Stem cell-based therapy in photoreceptor and retinal pigment epithelium transplantation is well received, however, the drawbacks of retinal transplantation is the limited clinical protocols development, insufficient number of transplanted cells for recovery, the selection of potential stem cell sources that can be differentiated into the target cells, and the ability of cells to migrate to the host tissue. Dental pulp stem cells (DPSC) belong to a subset of mesenchymal stem cells, and are recently being studied due to its high capability of differentiating into cells of the neuronal lineage. In this review, we look into the potential uses of DPSC in treating retinal degeneration, and also the current data supporting its application.
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Yao S, Li C, Budenski AM, Li P, Ramos A, Guo S. Expression of microRNAs targeting heat shock protein B8 during in vitro expansion of dental pulp stem cells in regulating osteogenic differentiation. Arch Oral Biol 2019; 107:104485. [PMID: 31376703 DOI: 10.1016/j.archoralbio.2019.104485] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 07/05/2019] [Accepted: 07/19/2019] [Indexed: 01/03/2023]
Abstract
OBJECTIVE The objectives of this study were (a) to determine the differentially expressed microRNAs that can target heat shock protein B8 (HspB8) during in vitro expansion of dental pulp stem cells (DPSCs); (b) to identify microRNAs involved in posttranscriptional regulation of HspB8 expression; and (c) to determine if HspB8-targeting microRNAs play roles on osteogenic differentiation of DPSCs. DESIGN DPSCs were established from rat first molars and expanded in vitro until the passage that cells lost osteogenic potential. TargetScan was used to predict the microRNAs that target HspB8 mRNA. Stem-loop quantitative RT-PCR was conducted to identify the HspB8-targeting microRNAs that were upregulated in late passages. The microRNAs mimics were transfected into DPSCs to assess their effects on HspB8 expression and on osteogenic differentiation. RESULTS let-7b-5p, miR-98-5p, miR-215, miR-219a-1-3p and miR-295-5p were found to consistently increase expression in DPSCs after expansion. HspB8 mRNA and/or protein were significantly decreased in the DPSCs after transfection of miR-215 and miR-219a-1-3p mimics; whereas no significant reduction was seen after transfecting let-7b-5p, miR-98-5p and miR-295-5p mimics. When subjecting the transfected DPSCs to osteogenic induction, reduction of calcium deposition or osteogenic marker expression were observed with miR-215, miR-219a-1-3p and miR-295-5p transfection. CONCLUSIONS Increased expression of miR-215 and miR-219a-1-3p downregulates HspB8 expression, which contributes to the reduction of osteogenic capability of DPSCs. Increased expression of miR295-5p also causes a reduction of osteogenic differentiation, but not involved in HspB8.
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Affiliation(s)
- Shaomian Yao
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA.
| | - Chunhong Li
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA.
| | - Angelle M Budenski
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA.
| | - Patricia Li
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA.
| | - Alexandra Ramos
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA.
| | - Steven Guo
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA.
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23
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Stovall KE, Tran TDN, Suantawee T, Yao S, Gimble JM, Adisakwattana S, Cheng H. Adenosine triphosphate enhances osteoblast differentiation of rat dental pulp stem cells via the PLC-IP 3 pathway and intracellular Ca 2+ signaling. J Cell Physiol 2019; 235:1723-1732. [PMID: 31301074 DOI: 10.1002/jcp.29091] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 06/11/2019] [Indexed: 01/01/2023]
Abstract
Intracellular Ca2+ signals are essential for stem cell function and play a significant role in the differentiation process. Dental pulp stem cells (DPSCs) are a potential source of stem cells; however, the mechanisms controlling cell differentiation remain largely unknown. Utilizing rat DPSCs, we examined the effect of adenosine triphosphate (ATP) on osteoblast differentiation and characterized its mechanism of action using real-time Ca 2+ imaging analysis. Our results revealed that ATP enhanced osteogenesis as indicated by Ca 2+ deposition in the extracellular matrix via Alizarin Red S staining. This was consistent with upregulation of osteoblast genes BMP2, Mmp13, Col3a1, Ctsk, Flt1, and Bgn. Stimulation of DPSCs with ATP (1-300 µM) increased intracellular Ca 2+ signals in a concentration-dependent manner, whereas histamine, acetylcholine, arginine vasopressin, carbachol, and stromal-cell-derived factor-1α failed to do so. Depletion of intracellular Ca 2+ stores in the endoplasmic reticulum by thapsigargin abolished the ATP responses which, nevertheless, remained detectable under extracellular Ca 2+ free condition. Furthermore, the phospholipase C (PLC) inhibitor U73122 and the inositol triphosphate (IP 3 ) receptor inhibitor 2-aminoethoxydiphenyl borate inhibited the Ca 2+ signals. Our findings provide a better understanding of how ATP controls osteogenesis in DPSCs, which involves a Ca 2+ -dependent mechanism via the PLC-IP 3 pathway. This knowledge could help improve osteogenic differentiation protocols for tissue regeneration of bone structures.
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Affiliation(s)
- Kelsie E Stovall
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana
| | - Tran D N Tran
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana
| | - Tanyawan Suantawee
- Department of Nutrition and Dietetics, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Shaomian Yao
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana
| | - Jeffrey M Gimble
- LaCell LLC, New Orleans Bioinnovation Center, New Orleans, Louisiana.,Center for Stem Cell Research & Regenerative Medicine, Tulane University, New Orleans, Louisiana
| | - Sirichai Adisakwattana
- Department of Nutrition and Dietetics, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Henrique Cheng
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana
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An Investigation about Gene Modules Associated with hDPSC Differentiation for Adolescents. Stem Cells Int 2019; 2019:8913287. [PMID: 31089336 PMCID: PMC6476005 DOI: 10.1155/2019/8913287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 10/24/2018] [Indexed: 11/17/2022] Open
Abstract
Dental pulp stem cells (DPSCs) have the property of self-renewal and multidirectional differentiation so that they have the potential for future regenerative therapy of various diseases. The latest breakthrough in the biology of stem cells and the development of regenerative biology provides an effective strategy for regenerative therapy. However, in the medium promoting differentiation during long-term passage, DPSCs would lose their differentiation capability. Some efforts have been made to find genes influencing human DPSC (hDPSC) differentiation based on hDPSCs isolated from adults. However, hDPSC differentiation is a very complex process, which involves multiple genes and multielement interactions. The purpose of this study is to detect sets of correlated genes (i.e., gene modules) that are associated to hDPSC differentiation at the crown-completed stage of the third molars, by using weighted gene coexpression network analysis (WGCNA). Based on the gene expression dataset GSE10444 from Gene Expression Omnibus (GEO), we identified two significant gene modules: yellow module (742 genes) and salmon module (9 genes). The WEB-based Gene SeT AnaLysis Toolkit showed that the 742 genes in the yellow module were enriched in 59 KEGG pathways (including Wnt signaling pathway), while the 9 genes in the salmon module were enriched in one KEGG pathway (neurotrophin signaling pathway). There were 660 (7) genes upregulated at P10 and 82 (2) genes downregulated at P10 in the yellow (salmon) module. Our results provide new insights into the differentiation capability of hDPSCs.
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Sugiyama K, Nagashima K, Miwa T, Shimizu Y, Kawaguchi T, Iida K, Tamaoki N, Hatakeyama D, Aoki H, Abe C, Morita H, Kunisada T, Shibata T, Fukumitsu H, Tezuka KI. FGF2-responsive genes in human dental pulp cells assessed using a rat spinal cord injury model. J Bone Miner Metab 2019; 37:467-474. [PMID: 30187276 DOI: 10.1007/s00774-018-0954-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 08/22/2018] [Indexed: 02/06/2023]
Abstract
The central nervous system in adult mammals does not heal spontaneously after spinal cord injury (SCI). However, SCI treatment has been improved recently following the development of cell transplantation therapy. We recently reported that fibroblast growth factor (FGF) 2-pretreated human dental pulp cells (hDPCs) can improve recovery in a rat model of SCI. This study aimed to investigate mechanisms underlying the curative effect of SCI enhanced via FGF2 pretreatment; we selected three hDPC lines upon screening for the presence of mesenchymal stem cell markers and of their functionality in a rat model of SCI, as assessed using the Basso, Beattie, and Bresnahan score of locomotor functional scale, electrophysiological tests, and morphological analyses. We identified FGF2-responsive genes via gene expression analyses in these lines. FGF2 treatment upregulated GABRB1, MMP1, and DRD2, which suggested to contribute to SCI or central the nervous system. In an expanded screening of additional lines, GABRB1 displayed rather unique and interesting behavior; two lines with the lowest sensitivity of GABRB1 to FGF2 treatment displayed an extremely minor effect in the SCI model. These findings provide insights into the role of FGF2-responsive genes, especially GABRB1, in recovery from SCI, using hDPCs treated with FGF2.
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Affiliation(s)
- Ken Sugiyama
- Department of Oral and Maxillofacial Science, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Gifu, 501-1194, Japan
| | - Kosuke Nagashima
- Laboratory of Molecular Biology, Gifu Pharmaceutical University, 1-25-4 Daigaku-Nishi, Gifu, Gifu, 501-1196, Japan
| | - Takahiro Miwa
- Laboratory of Molecular Biology, Gifu Pharmaceutical University, 1-25-4 Daigaku-Nishi, Gifu, Gifu, 501-1196, Japan
| | - Yuta Shimizu
- Department of Periodontology, Asahi University School of Dentistry, 1851-1 Hozumi, Mizuho, Gifu, 501-0296, Japan
| | - Tomoko Kawaguchi
- Department of Oral and Maxillofacial Science, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Gifu, 501-1194, Japan
| | - Kazuki Iida
- Department of Oral and Maxillofacial Science, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Gifu, 501-1194, Japan
| | - Naritaka Tamaoki
- Department of Oral and Maxillofacial Science, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Gifu, 501-1194, Japan
| | - Daijiro Hatakeyama
- Department of Oral and Maxillofacial Science, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Gifu, 501-1194, Japan
| | - Hitomi Aoki
- Department of Tissue and Organ Development, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Gifu, 501-1194, Japan
| | - Chikara Abe
- Department of Physiology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Gifu, 501-1194, Japan
| | - Hironobu Morita
- Department of Physiology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Gifu, 501-1194, Japan
| | - Takahiro Kunisada
- Department of Tissue and Organ Development, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Gifu, 501-1194, Japan
| | - Toshiyuki Shibata
- Department of Oral and Maxillofacial Science, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Gifu, 501-1194, Japan
| | - Hidefumi Fukumitsu
- Laboratory of Molecular Biology, Gifu Pharmaceutical University, 1-25-4 Daigaku-Nishi, Gifu, Gifu, 501-1196, Japan
| | - Ken-Ichi Tezuka
- Department of Tissue and Organ Development, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Gifu, 501-1194, Japan.
- Center for Highly Advanced Integration of Nano and Life Sciences, Gifu University (G-CHAIN), Gifu, Japan.
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Hernández-Monjaraz B, Santiago-Osorio E, Ledesma-Martínez E, Alcauter-Zavala A, Mendoza-Núñez VM. Retrieval of a periodontally compromised tooth by allogeneic grafting of mesenchymal stem cells from dental pulp: A case report. J Int Med Res 2018; 46:2983-2993. [PMID: 29911458 PMCID: PMC6124270 DOI: 10.1177/0300060518773244] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Objective To report a case of successful allogeneic grafting of mesenchymal dental pulp stem cells (DPSCs) as preliminary findings in a patient with periodontal disease enrolled into clinical trial ISRCTN12831118. Methods Mesenchymal stem cells from the dental pulp of a deciduous tooth from a 7-year-old donor were separated from the pulp chamber and processed via enzymatic digestion and centrifugation. DPSCs were passaged and cultured on a 35 × 13 mm culture dish in minimum essential medium-alpha, without supplementation. After reaching 80% confluency, 5 x 106 allogeneic DPSCs in 250 µl phosphate buffered saline were seeded onto a dry scaffold of lyophilized collagen-polyvinylpyrrolidone sponge placed in the left lower premolar area of a 61-year-old patient with periodontal disease. Surgical access to the lower premolar area was achieved using the flap technique. Results At 3 and 6 months following allogeneic graft, the patient showed no sign of rejection and exhibited decreases in tooth mobility, periodontal pocket depth and bone defect area. Bone mineral density had increased at the graft site. Conclusions Regenerative periodontal therapy using DPSCs of allogeneic origin may be a promising treatment for periodontal disease-induced bone defects.
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Affiliation(s)
- Beatriz Hernández-Monjaraz
- 1 Research Unit on Gerontology, FES Zaragoza, National Autonomous University of Mexico, Mexico City, Mexico
| | - Edelmiro Santiago-Osorio
- 2 Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, FES Zaragoza, National Autonomous University of Mexico, Mexico City, Mexico
| | - Edgar Ledesma-Martínez
- 2 Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, FES Zaragoza, National Autonomous University of Mexico, Mexico City, Mexico
| | - Andrés Alcauter-Zavala
- 1 Research Unit on Gerontology, FES Zaragoza, National Autonomous University of Mexico, Mexico City, Mexico
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Flanagan M, Li C, Dietrich MA, Richard M, Yao S. Downregulation of heat shock protein B8 decreases osteogenic differentiation potential of dental pulp stem cells during in vitro proliferation. Cell Prolif 2017; 51:e12420. [PMID: 29266518 DOI: 10.1111/cpr.12420] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 11/02/2017] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVES Tissue-derived stem cells, such as dental pulp stem cells (DPSCs), reduce differentiation capability during in vitro culture. We found that cultured DPSCs reduce expression of heat shock protein B8 (HspB8) and GIPC PDZ domain containing family member 2 (Gipc2). Our objectives were to evaluate the changes in DPSC composition during in vitro proliferation and to determine whether HspB8 and Gipc2 have function in differentiation potential of DPSCs. MATERIALS AND METHODS Different passages of rat DPSCs were evaluated for changes in CD90+ and/or CD271+ stem cells and changes in osteogenic potential. Real-time RT-PCR and immunostaining were conducted to determine expression of HspB8 and Gipc2. Expression of the genes in DPSCs was knocked down by siRNA, followed by osteogenic induction to evaluate the function of the genes. RESULTS About 90% of cells in the DPSC cultures were CD90+ and/or CD271+ cells without dramatic change during in vitro proliferation. The DPSCs at passages 3 to 5 (P3 to P5) possess strong osteogenic potential, but such potential was greatly reduced at later passages. Expression of HspB8 and Gipc2 was significantly reduced at P11 versus P3. Knock-down of HspB8 expression abolished osteogenic potential of the DPSCs, but knock-down of Gipc2 had no effect. CONCLUSIONS CD90+ and CD271+ cells are the major components of DPSCs in in vitro culture. High-level expression of HspB8 was critical for maintaining differentiation potential of DPSCs.
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Affiliation(s)
- M Flanagan
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA
| | - C Li
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA
| | - M A Dietrich
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA
| | - M Richard
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA
| | - S Yao
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA
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28
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Rezai Rad M, Bohloli M, Akhavan Rahnama M, Anbarlou A, Nazeman P, Khojasteh A. Impact of Tissue Harvesting Sites on the Cellular Behaviors of Adipose-Derived Stem Cells: Implication for Bone Tissue Engineering. Stem Cells Int 2017; 2017:2156478. [PMID: 29387089 PMCID: PMC5745705 DOI: 10.1155/2017/2156478] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 09/30/2017] [Accepted: 11/08/2017] [Indexed: 01/22/2023] Open
Abstract
The advantages of adipose-derived stem cells (AdSCs) over bone marrow stem cells (BMSCs), such as being available as a medical waste and less discomfort during harvest, have made them a good alternative instead of BMSCs in tissue engineering. AdSCs from buccal fat pad (BFP), as an easily harvestable and accessible source, have gained interest to be used for bone regeneration in the maxillofacial region. Due to scarcity of data regarding comparative analysis of isolated AdSCs from different parts of the body, we aimed to quantitatively compare the proliferation and osteogenic capabilities of AdSCs from different harvesting sites. In this study, AdSCs were isolated from BFP (BFPdSCs), abdomen (abdomen-derived mesenchymal stem cells (AbdSCs)), and hip (hip-derived mesenchymal stem cells (HdSCs)) from one individual and were compared for surface marker expression, morphology, growth rate, and osteogenic differentiation capability. Among them, BFPdSCs demonstrated the highest proliferation rate with the shortest doubling time and also expressed vascular endothelial markers including CD34 and CD146. Moreover, the expression of osteogenic markers were significantly higher in BFPdSCs. The results of this study suggested that BFPdSCs as an encouraging source of mesenchymal stem cells are to be used for bone tissue engineering.
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Affiliation(s)
- Maryam Rezai Rad
- Dental Research Center, Research Institute of Dental Sciences, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahbobeh Bohloli
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahshid Akhavan Rahnama
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Applied Cell Sciences, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Azadeh Anbarlou
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Pantea Nazeman
- Dental Research Center, Research Institute of Dental Sciences, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Arash Khojasteh
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Nagashima K, Miwa T, Soumiya H, Ushiro D, Takeda-Kawaguchi T, Tamaoki N, Ishiguro S, Sato Y, Miyamoto K, Ohno T, Osawa M, Kunisada T, Shibata T, Tezuka KI, Furukawa S, Fukumitsu H. Priming with FGF2 stimulates human dental pulp cells to promote axonal regeneration and locomotor function recovery after spinal cord injury. Sci Rep 2017; 7:13500. [PMID: 29044129 PMCID: PMC5647367 DOI: 10.1038/s41598-017-13373-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 09/22/2017] [Indexed: 12/31/2022] Open
Abstract
Human dental pulp cells (DPCs), adherent cells derived from dental pulp tissues, are potential tools for cell transplantation therapy. However, little work has been done to optimize such transplantation. In this study, DPCs were treated with fibroblast growth factor-2 (FGF2) for 5-6 consecutive serial passages and were transplanted into the injury site immediately after complete transection of the rat spinal cord. FGF2 priming facilitated the DPCs to promote axonal regeneration and to improve locomotor function in the rat with spinal cord injury (SCI). Additional analyses revealed that FGF2 priming protected cultured DPCs from hydrogen-peroxide-induced cell death and increased the number of DPCs in the SCI rat spinal cord even 7 weeks after transplantation. The production of major neurotrophic factors was equivalent in FGF2-treated and untreated DPCs. These observations suggest that FGF2 priming might protect DPCs from the post-trauma microenvironment in which DPCs infiltrate and resident immune cells generate cytotoxic reactive oxygen species. Surviving DPCs could increase the availability of neurotrophic factors in the lesion site, thereby promoting axonal regeneration and locomotor function recovery.
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Affiliation(s)
- Kosuke Nagashima
- Laboratory of Molecular Biology, Department of Biofunctional Analysis, Gifu Pharmaceutical University, 1-25-4 Daigakunishi, Gifu, 501-1196, Japan
| | - Takahiro Miwa
- Laboratory of Molecular Biology, Department of Biofunctional Analysis, Gifu Pharmaceutical University, 1-25-4 Daigakunishi, Gifu, 501-1196, Japan
| | - Hitomi Soumiya
- Laboratory of Molecular Biology, Department of Biofunctional Analysis, Gifu Pharmaceutical University, 1-25-4 Daigakunishi, Gifu, 501-1196, Japan
| | - Daisuke Ushiro
- Laboratory of Molecular Biology, Department of Biofunctional Analysis, Gifu Pharmaceutical University, 1-25-4 Daigakunishi, Gifu, 501-1196, Japan
| | - Tomoko Takeda-Kawaguchi
- Department of Oral and Maxillofacial Science, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Naritaka Tamaoki
- Department of Oral and Maxillofacial Science, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
- National Cancer Institute, National Institutes of Health (NIH), Bethesda, Maryland, 20892, USA
| | - Saho Ishiguro
- Laboratory of Molecular Biology, Department of Biofunctional Analysis, Gifu Pharmaceutical University, 1-25-4 Daigakunishi, Gifu, 501-1196, Japan
| | - Yumi Sato
- Laboratory of Molecular Biology, Department of Biofunctional Analysis, Gifu Pharmaceutical University, 1-25-4 Daigakunishi, Gifu, 501-1196, Japan
| | - Kei Miyamoto
- Department of Orthopaedic Surgery, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
- Department of Orthopaedic Surgery and Spine Center, Gifu Municipal Hospital, 7-1 Kashima, Gifu, 500-8323, Japan
| | - Takatoshi Ohno
- Department of Orthopaedic Surgery, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
- Department of Orthopaedic Surgery, Gifu Red Cross Hospital, 3-36 Iwakura, Gifu, 502-0844, Japan
| | - Masatake Osawa
- Department of Regeneration Technology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Takahiro Kunisada
- Department of Tissue and Organ Development, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Toshiyuki Shibata
- Department of Oral and Maxillofacial Science, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Ken-Ichi Tezuka
- Department of Tissue and Organ Development, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Shoei Furukawa
- Laboratory of Molecular Biology, Department of Biofunctional Analysis, Gifu Pharmaceutical University, 1-25-4 Daigakunishi, Gifu, 501-1196, Japan
| | - Hidefumi Fukumitsu
- Laboratory of Molecular Biology, Department of Biofunctional Analysis, Gifu Pharmaceutical University, 1-25-4 Daigakunishi, Gifu, 501-1196, Japan.
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30
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Hong JW, Lim JH, Chung CJ, Kang TJ, Kim TY, Kim YS, Roh TS, Lew DH. Immune Tolerance of Human Dental Pulp-Derived Mesenchymal Stem Cells Mediated by CD4⁺CD25⁺FoxP3⁺ Regulatory T-Cells and Induced by TGF-β1 and IL-10. Yonsei Med J 2017; 58:1031-1039. [PMID: 28792150 PMCID: PMC5552631 DOI: 10.3349/ymj.2017.58.5.1031] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 06/20/2017] [Accepted: 06/27/2017] [Indexed: 01/09/2023] Open
Abstract
PURPOSE Most studies on immune tolerance of mesenchymal stem cells (MSCs) have been performed using MSCs derived from bone marrow, cord blood, or adipose tissue. MSCs also exist in the craniofacial area, specifically in teeth. The purpose of this study was to evaluate the mechanisms of immune tolerance of dental pulp-derived MSC (DP-MSC) in vitro and in vivo. MATERIALS AND METHODS We isolated DP-MSCs from human dental pulp and co-cultured them with CD4⁺ T-cells. To evaluate the role of cytokines, we blocked TGF-β and IL-10, separately and together, in co-cultured DP-MSCs and CD4⁺ T-cells. We analyzed CD25 and FoxP3 to identify regulatory T-cells (Tregs) by fluorescence-activated cell sorting (FACS) and real-time PCR. We performed alloskin grafts with and without DP-MSC injection in mice. We performed mixed lymphocyte reactions (MLRs) to check immune tolerance. RESULTS Co-culture of CD4⁺ T-cells with DP-MSCs increased the number of CD4⁺CD25⁺FoxP3⁺ Tregs (p<0.01). TGF-β or/and IL-10 blocking suppressed Treg induction in co-cultured cells (p<0.05). TGF-β1 mRNA levels were higher in co-cultured DP-MSCs and in co-cultured CD4⁺ T-cells than in the respective monocultured cells. However, IL-10 mRNA levels were not different. There was no difference in alloskin graft survival rate and area between the DP-MSC injection group and the non-injection group. Nonetheless, MLR was reduced in the DP-MSC injected group (p<0.05). CONCLUSION DP-MSCs can modulate immune tolerance by increasing CD4⁺CD25⁺FoxP3⁺ Tregs. TGF-β1 and IL-10 are factors in the immune-tolerance mechanism. Pure DP-MSC therapy may not be an effective treatment for rejection, although it may module immune tolerance in vivo.
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Affiliation(s)
- Jong Won Hong
- Department of Plastic & Reconstructive Surgery, College of Medicine, Yonsei University, Seoul, Korea
- Institute for Human Tissue Restoration, College of Medicine, Yonsei University, Seoul, Korea.
| | - Jung Hyun Lim
- Department of Plastic & Reconstructive Surgery, College of Medicine, Yonsei University, Seoul, Korea
- Institute for Human Tissue Restoration, College of Medicine, Yonsei University, Seoul, Korea
| | - Chooryung J Chung
- Department of Orthodontics, College of Dentistry, Yonsei University, Seoul, Korea
| | - Tae Jo Kang
- Department of Plastic & Reconstructive Surgery, College of Medicine, Yonsei University, Seoul, Korea
- Yujin Plastic Surgery, Seoul, Korea
| | - Tae Yeon Kim
- Department of Orthodontics, College of Dentistry, Yonsei University, Seoul, Korea
| | - Young Seok Kim
- Department of Plastic & Reconstructive Surgery, College of Medicine, Yonsei University, Seoul, Korea
- Institute for Human Tissue Restoration, College of Medicine, Yonsei University, Seoul, Korea
| | - Tae Suk Roh
- Department of Plastic & Reconstructive Surgery, College of Medicine, Yonsei University, Seoul, Korea
- Institute for Human Tissue Restoration, College of Medicine, Yonsei University, Seoul, Korea
| | - Dae Hyun Lew
- Department of Plastic & Reconstructive Surgery, College of Medicine, Yonsei University, Seoul, Korea
- Institute for Human Tissue Restoration, College of Medicine, Yonsei University, Seoul, Korea
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31
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Honda M, Sato M, Toriumi T. Characterization of Coronal Pulp Cells and Radicular Pulp Cells in Human Teeth. J Endod 2017; 43:S35-S39. [DOI: 10.1016/j.joen.2017.06.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Nakayama H, Iohara K, Hayashi Y, Okuwa Y, Kurita K, Nakashima M. Enhanced regeneration potential of mobilized dental pulp stem cells from immature teeth. Oral Dis 2017; 23:620-628. [PMID: 27973697 DOI: 10.1111/odi.12619] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 11/24/2016] [Accepted: 12/01/2016] [Indexed: 12/16/2022]
Abstract
OBJECTIVES We have previously demonstrated that dental pulp stem cells (DPSCs) isolated from mature teeth by granulocyte colony-stimulating factor (G-CSF)-induced mobilization method can enhance angiogenesis/vasculogenesis and improve pulp regeneration when compared with colony-derived DPSCs. However, the efficacy of this method in immature teeth with root-formative stage has never been investigated. Therefore, the aim of this study was to examine the stemness, biological characteristics, and regeneration potential in mobilized DPSCs compared with colony-derived DPSCs from immature teeth. MATERIALS AND METHODS Mobilized DPSCs isolated from immature teeth were compared to colony-derived DPSCs using methods including flow cytometry, migration assays, mRNA expression of angiogenic/neurotrophic factor, and induced differentiation assays. They were also compared in trophic effects of the secretome. Regeneration potential was further compared in an ectopic tooth transplantation model. RESULTS Mobilized DPSCs had higher migration ability and expressed more angiogenic/neurotrophic factors than DPSCs. The mobilized DPSC secretome produced a higher stimulatory effect on migration, immunomodulation, anti-apoptosis, endothelial differentiation, and neurite extension. In addition, vascularization and pulp regeneration potential were higher in mobilized DPSCs than in DPSCs. CONCLUSIONS G-CSF-induced mobilization method enhances regeneration potential of colony-derived DPSCs from immature teeth.
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Affiliation(s)
- H Nakayama
- Department of Stem Cell Biology and Regenerative Medicine, National Center for Geriatrics and Gerontology, Research Institute, Obu, Japan.,Department of Oral Maxillofacial Surgery, School of Dentistry, Aichi Gakuin University, Nagoya, Japan
| | - K Iohara
- Department of Stem Cell Biology and Regenerative Medicine, National Center for Geriatrics and Gerontology, Research Institute, Obu, Japan
| | - Y Hayashi
- Department of Stem Cell Biology and Regenerative Medicine, National Center for Geriatrics and Gerontology, Research Institute, Obu, Japan.,Department of Pediatric Dentistry, School of Dentistry, Aichi Gakuin University, Nagoya, Japan
| | - Y Okuwa
- Department of Stem Cell Biology and Regenerative Medicine, National Center for Geriatrics and Gerontology, Research Institute, Obu, Japan.,Department of Oral Maxillofacial Surgery, School of Dentistry, Aichi Gakuin University, Nagoya, Japan
| | - K Kurita
- Department of Oral Maxillofacial Surgery, School of Dentistry, Aichi Gakuin University, Nagoya, Japan
| | - M Nakashima
- Department of Stem Cell Biology and Regenerative Medicine, National Center for Geriatrics and Gerontology, Research Institute, Obu, Japan
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Ozeki N, Hase N, Mogi M, Nakata K. RETRACTED: New findings for dentin sialophosphoprotein studies: Applications of purified odontoblast-like cells derived from stem cells. J Oral Biosci 2016; 58:128-133. [PMID: 32512681 DOI: 10.1016/j.job.2016.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 06/15/2016] [Accepted: 06/29/2016] [Indexed: 10/21/2022]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). This article has been retracted at the request of the Authors. After the retraction of the article [Hiyama T, Ozeki N, Mogi M, Yamaguchi H, Kawai R, Nakata K, Kondo A, Nakamura H. 2013. Matrix Metalloproteinase-3 in Odontoblastic Cells Derived from Ips Cells: Unique Proliferation Response as Odontoblastic Cells Derived from ES Cells. PLoS ONE 8(12): e83563. doi:10.1371/journal.pone.0083563] which contained fabricated/falsified data, the authors attempted to confirm original data for the results presented in their related publications. As a result, they reached a conclusion that there were no original data for the results presented in several their publications. This article was written on the basis of the seven publications retracted or to be retracted and it is no longer reliable. Reference 24: N. Ozeki, M. Mogi, R. Kawai, H. Yamaguchi, T. Hiyama, K. Nakata, H. Nakamura Mouse-induced pluripotent stem cells differentiate into odontoblast-like cells with induction of altered adhesive and migratory phenotype of integrin PLoS One, 8 (2013), p. e80026 Reference 25:R. Kawai, N. Ozeki, H. Yamaguchi, T. Tanaka, K. Nakata, M. Mogi, H. Nakamura Mouse ES cells have a potential to differentiate into odontoblast-like cells using hanging drop method Oral Dis, 20 (2014), pp. 395-403 Reference 26:N. Ozeki, M. Mogi, H. Yamaguchi, T. Hiyama, R. Kawai, N. Hase, K. Nakata, H. Nakamura, R.H. Kramer Differentiation of human skeletal muscle stem cells into odontoblasts is dependent on induction of alpha1 integrin expression J Biol Chem, 289 (2014), pp. 14380-14391 Reference 42:N. Ozeki, N. Hase, R. Kawai, H. Yamaguchi, T. Hiyama, A. Kondo, K. Nakata, M. Mogi Unique proliferation response in odontoblastic cells derived from human skeletal muscle stem cells by cytokine-induced matrix metalloproteinase-3 Exp Cell Res, 331 (2015), pp. 105-114 Reference 43: N. Ozeki, N. Hase, H. Yamaguchi, T. Hiyama, R. Kawai, A. Kondo, K. Nakata, M. Mogi Polyphosphate induces matrix metalloproteinase-3-mediated proliferation of odontoblast-like cells derived from induced pluripotent stem cells Exp Cell Res, 333 (2015), pp. 303-315 Reference 44: N. Ozeki, R. Kawai, N. Hase, T. Hiyama, H. Yamaguchi, A. Kondo, K. Nakata, M. Mogi Alpha2 integrin, extracellular matrix metalloproteinase inducer, and matrix metalloproteinase-3 act sequentially to induce differentiation of mouse embryonic stem cells into odontoblast-like Exp Cell Res, 331 (2015), pp. 21-37 Reference 45: N. Ozeki, M. Mogi, N. Hase, T. Hiyama, H. Yamaguchi, R. Kawai, A. Kondo, T. Matsumoto, K. Nakata Autophagy-related gene 5 and Wnt5 signaling pathway requires differentiation of embryonic stem cells into odontoblast-like cells Exp Cell Res, 341 (2016), pp. 92-104 All of the authors except Nobuaki Ozeki have agreed to retract the article. Nobuaki Ozeki, the corresponding author and the first author of the article, left Aichi Gakuin University in March 2018, and does not respond to co-authors inquiries. The authors deeply regret this error and any inconvenience it may have caused.
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Affiliation(s)
- Nobuaki Ozeki
- Department of Endodontics, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi 464-8651, Japan.
| | - Naoko Hase
- Department of Endodontics, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi 464-8651, Japan
| | - Makio Mogi
- Department of Medicinal Biochemistry, School of Pharmacy, Aichi Gakuin University, Nagoya, Aichi 464-8650, Japan
| | - Kazuhiko Nakata
- Department of Endodontics, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi 464-8651, Japan
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The Neurovascular Properties of Dental Stem Cells and Their Importance in Dental Tissue Engineering. Stem Cells Int 2016; 2016:9762871. [PMID: 27688777 PMCID: PMC5027319 DOI: 10.1155/2016/9762871] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 08/01/2016] [Indexed: 12/16/2022] Open
Abstract
Within the field of tissue engineering, natural tissues are reconstructed by combining growth factors, stem cells, and different biomaterials to serve as a scaffold for novel tissue growth. As adequate vascularization and innervation are essential components for the viability of regenerated tissues, there is a high need for easily accessible stem cells that are capable of supporting these functions. Within the human tooth and its surrounding tissues, different stem cell populations can be distinguished, such as dental pulp stem cells, stem cells from human deciduous teeth, stem cells from the apical papilla, dental follicle stem cells, and periodontal ligament stem cells. Given their straightforward and relatively easy isolation from extracted third molars, dental stem cells (DSCs) have become an attractive source of mesenchymal-like stem cells. Over the past decade, there have been numerous studies supporting the angiogenic, neuroprotective, and neurotrophic effects of the DSC secretome. Together with their ability to differentiate into endothelial cells and neural cell types, this makes DSCs suitable candidates for dental tissue engineering and nerve injury repair.
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Cheong A, Zhang X, Cheung YY, Tang WY, Chen J, Ye SH, Medvedovic M, Leung YK, Prins GS, Ho SM. DNA methylome changes by estradiol benzoate and bisphenol A links early-life environmental exposures to prostate cancer risk. Epigenetics 2016; 11:674-689. [PMID: 27415467 PMCID: PMC5048723 DOI: 10.1080/15592294.2016.1208891] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Developmental exposure to endocrine-disrupting chemicals (EDCs), 17β-estradiol-3-benzoate (EB) and bisphenol A (BPA), increases susceptibility to prostate cancer (PCa) in rodent models. Here, we used the methylated-CpG island recovery assay (MIRA)-assisted genomic tiling and CpG island arrays to identify treatment-associated methylome changes in the postnatal day (PND)90 dorsal prostate tissues of Sprague-Dawley rats neonatally (PND1, 3, and 5) treated with 25 µg/pup or 2,500 µg EB/kg body weight (BW) or 0.1 µg BPA/pup or 10 µg BPA/kg BW. We identified 111 EB-associated and 86 BPA-associated genes, with 20 in common, that have significant differentially methylated regions. Pathway analysis revealed cancer as the top common disease pathway. Bisulfite sequencing validated the differential methylation patterns observed by array analysis in 15 identified candidate genes. The methylation status of 7 (Pitx3, Wnt10b, Paqr4, Sox2, Chst14, Tpd52, Creb3l4) of these 15 genes exhibited an inverse correlation with gene expression in tissue samples. Cell-based assays, using 5-aza-cytidine-treated normal (NbE-1) and cancerous (AIT) rat prostate cells, added evidence of DNA methylation-mediated gene expression of 6 genes (exception: Paqr4). Functional connectivity of these genes was linked to embryonic stem cell pluripotency. Furthermore, clustering analyses using the dataset from The Cancer Genome Atlas revealed that expression of this set of 7 genes was associated with recurrence-free survival of PCa patients. In conclusion, our study reveals that gene-specific promoter methylation changes, resulting from early-life EDC exposure in the rat, may serve as predictive epigenetic biomarkers of PCa recurrence, and raises the possibility that such exposure may impact human disease.
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Affiliation(s)
- Ana Cheong
- a Department of Environmental Health , University of Cincinnati College of Medicine , Cincinnati , OH , USA.,b Center for Environmental Genetics, University of Cincinnati College of Medicine , Cincinnati , OH , USA
| | - Xiang Zhang
- a Department of Environmental Health , University of Cincinnati College of Medicine , Cincinnati , OH , USA.,b Center for Environmental Genetics, University of Cincinnati College of Medicine , Cincinnati , OH , USA
| | - Yuk-Yin Cheung
- a Department of Environmental Health , University of Cincinnati College of Medicine , Cincinnati , OH , USA
| | - Wan-Yee Tang
- a Department of Environmental Health , University of Cincinnati College of Medicine , Cincinnati , OH , USA.,b Center for Environmental Genetics, University of Cincinnati College of Medicine , Cincinnati , OH , USA
| | - Jing Chen
- a Department of Environmental Health , University of Cincinnati College of Medicine , Cincinnati , OH , USA
| | - Shu-Hua Ye
- c Department of Urology , College of Medicine, University of Illinois at Chicago , Chicago , IL , USA
| | - Mario Medvedovic
- a Department of Environmental Health , University of Cincinnati College of Medicine , Cincinnati , OH , USA.,b Center for Environmental Genetics, University of Cincinnati College of Medicine , Cincinnati , OH , USA.,d Cincinnati Cancer Center , Cincinnati , OH , USA
| | - Yuet-Kin Leung
- a Department of Environmental Health , University of Cincinnati College of Medicine , Cincinnati , OH , USA.,b Center for Environmental Genetics, University of Cincinnati College of Medicine , Cincinnati , OH , USA.,d Cincinnati Cancer Center , Cincinnati , OH , USA
| | - Gail S Prins
- c Department of Urology , College of Medicine, University of Illinois at Chicago , Chicago , IL , USA.,e University of Illinois Cancer Center , Chicago , IL , USA
| | - Shuk-Mei Ho
- a Department of Environmental Health , University of Cincinnati College of Medicine , Cincinnati , OH , USA.,b Center for Environmental Genetics, University of Cincinnati College of Medicine , Cincinnati , OH , USA.,d Cincinnati Cancer Center , Cincinnati , OH , USA.,f Cincinnati Veteran Affairs Hospital Medical Center , Cincinnati , OH , USA
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Khojasteh A, Nazeman P, Rad MR. Dental Stem Cells in Oral, Maxillofacial and Craniofacial Regeneration. ACTA ACUST UNITED AC 2016. [DOI: 10.1007/978-3-319-28947-2_8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Viña-Almunia J, Borras C, Gambini J, El Alamy M, Peñarrocha M, Viña J. Influence of different types of pulp treatment during isolation in the obtention of human dental pulp stem cells. Med Oral Patol Oral Cir Bucal 2016; 21:e374-9. [PMID: 26946201 PMCID: PMC4867212 DOI: 10.4317/medoral.20957] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 12/27/2015] [Indexed: 01/09/2023] Open
Abstract
Background Different methods have been used in order to isolate dental pulp stem cells. The aim of this study was to study the effect of different types of pulp treatment during isolation, under 3% O2 conditions, in the time needed and the efficacy for obtaining dental pulp stem cells. Material and Methods One hundred and twenty dental pulps were used to isolate dental pulp stem cells treating the pulp tissue during isolation using 9 different methods, using digestive, disgregation, or mechanical agents, or combining them. The cells were positive for CD133, Oct4, Nestin, Stro-1, CD34 markers, and negative for the hematopoietic cell marker CD-45, thus confirming the presence of mesenchymal stem cells. The efficacy of dental pulp stem cells obtention and the minimum time needed to obtain such cells comparing the 9 different methods was analyzed. Results Dental pulp stem cells were obtained from 97 of the 120 pulps used in the study, i.e. 80.8% of the cases. They were obtained with all the methods used except with mechanical fragmentation of the pulp, where no enzymatic digestion was performed. The minimum time needed to isolate dental pulp stem cells was 8 hours, digesting with 2mg/ml EDTA for 10 minutes, 4mg/ml of type I collagenase, 4mg/ml of type II dispase for 40 minutes, 13ng/ml of thermolysine for 40 minutes and sonicating the culture for one minute. Conclusions Dental pulp stem cells were obtained in 97 cases from a series of 120 pulps. The time for obtaining dental pulp stem cells was reduced maximally, without compromising the obtention of the cells, by combining digestive, disgregation, and mechanical agents. Key words:Dental pulp stem cells, mesenchymal stem cells, isolation method.
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Affiliation(s)
- J Viña-Almunia
- Cirugía Bucal, Clínicas Odontológicas, Facultad de Medicina y Odontología, Universidad de Valencia, Gascó Oliag 1, E46021- Valencia, Spain,
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Somani R, Jaidka S, Bajaj N, Arora S. Miracle cells for natural dentistry - A review. J Oral Biol Craniofac Res 2016; 7:49-53. [PMID: 28316922 DOI: 10.1016/j.jobcr.2015.11.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 11/15/2015] [Indexed: 01/28/2023] Open
Abstract
Stem cells are undifferentiated cells that can differentiate into specialized cells. Recently, enormous growth has been seen in the recognition of stem cell-based therapies, which have the potential to ameliorate the life of patients with conditions that span from Parkinson's disease to cardiac ischemia to bone or tooth loss. This research has produced new but unexplored possibilities in the regeneration of different organs and tissues. Presently, research is focused on the proficiency of stem cells and their utilization in dentistry, which is gaining interest. The tooth is nature's "esteem" for these precious stem cells and there are a number of these cells in permanent and primary teeth, as well as in the wisdom teeth. Dental stem cells are easy, convenient, and affordable to collect. They hold promise for a range of very potential therapeutic applications, such as in the treatment of cancer, spinal cord injury, brain damage, myocardial infarction, hearing loss, diabetes, wound healing, baldness, etc. Since these cells were used to regenerate damaged tissue in medical therapy successfully, it is possible that the dentist in future might use stem cell to regenerate lost or damaged dental and periodontal structures. This paper reviews the current concepts, characteristics of stem cells in regeneration, and its subsequent uses in dentistry.
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Affiliation(s)
- Rani Somani
- Professor and Head, Department of Paedodontics and Preventive Dentistry, D J College of Dental Sciences and Research, Modinagar 201204, Uttar Pradesh, India
| | - Shipra Jaidka
- Professor, Department of Paedodontics and Preventive Dentistry, D J College of Dental Sciences and Research, Modinagar 201204, Uttar Pradesh, India
| | - Neeti Bajaj
- Reader, Department of Paedodontics and Preventive Dentistry, D J College of Dental Sciences and Research, Modinagar 201204, Uttar Pradesh, India
| | - Sameksha Arora
- Post Graduate Student, Department of Paedodontics and Preventive Dentistry, D J College of Dental Sciences and Research, Modinagar 201204, Uttar Pradesh, India
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AbdulQader ST, Rahman IA, Thirumulu KP, Ismail H, Mahmood Z. Effect of biphasic calcium phosphate scaffold porosities on odontogenic differentiation of human dental pulp cells. J Biomater Appl 2016; 30:1300-11. [PMID: 26740503 DOI: 10.1177/0885328215625759] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Calcium phosphates (CaP) of different porosities have been widely and successfully used as scaffolds with osteoblast cells for bone tissue regeneration. However, the effects of scaffold porosities on cell viability and differentiation of human dental pulp cells for dentin tissue regeneration are not well known. In this study, biphasic calcium phosphate (BCP) scaffolds of 20/80 hydroxyapatite to beta tricalcium phosphate ratio with a mean pore size of 300 μm were prepared into BCP1, BCP2, BCP3, and BCP4 of 25%, 50%, 65%, and 75% of total porosities, respectively. The extracts of these scaffolds were assessed with regard to cell viability, proliferation, and differentiation of human dental pulp cells. The high alkalinity, and more calcium and phosphate ions release that were exhibited by BCP3 and BCP4 decreased the viability and proliferation of human dental pulp cells as compared to BCP1 and BCP2. BCP2 significantly increased both cell viability and cell proliferation. However, the cells cultured with BCP3 extract revealed high alkaline phosphatase (ALP) activity and high expression of odontoblast related genes, collagen type I alpha 1, dentin matrix protein-1, and dentin sialophosphoprotein as compared to that cultured with BCP1, BCP2, and BCP4 extracts. The results highlight the effect of different scaffold porosities on the cell microenvironment and demonstrate that BCP3 scaffold of 65% porosity can support human dental pulp cells differentiation for dentin tissue regeneration.
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Affiliation(s)
- Sarah T AbdulQader
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia Department of Pedodontic and Preventive Dentistry, College of Dentistry, University of Baghdad, Baghdad, Iraq
| | - Ismail A Rahman
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Kannan P Thirumulu
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia Human Genome Centre, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Hanafi Ismail
- School of Materials and Minerals Resource Engineering, Universiti Sains Malaysia, Penang, Malaysia
| | - Zuliani Mahmood
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
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40
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Cryopreservation and Banking of Dental Stem Cells. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 951:199-235. [DOI: 10.1007/978-3-319-45457-3_17] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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41
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Wang L, Cheng L, Wang H, Pan H, Yang H, Shao M, Hu T. Glycometabolic reprogramming associated with the initiation of human dental pulp stem cell differentiation. Cell Biol Int 2015; 40:308-17. [PMID: 26634800 DOI: 10.1002/cbin.10568] [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: 10/11/2015] [Accepted: 12/01/2015] [Indexed: 02/05/2023]
Abstract
Glycometabolism, particularly mitochondrial oxidative phosphorylation (OXPHOS) and glycolysis, plays a central role in cell life activities. Glycometabolism can be reprogrammed to maintain the stemness or to induce the differentiation of stem cells, thereby regulating tissue repair and regeneration. However, research on the glycometabolism of human dental pulp stem cells (hDPSCs) remains scarce. Here, we investigated the relationship between glycometabolic reprogramming and initiation of hDPSC differentiation. We found the differentiation of hDPSCs commenced on day 3 when cells were cultured in mineralized medium. When cell differentiation commenced, mitochondria became elongated with well-developed cristae, and the oxygen consumption rate of mitochondria was enhanced, manifested as an increase in basal respiration, mitochondrial ATP production, and maximal respiration. Interestingly, glycolytic enzyme activities, glycolysis capacity, and glycolysis reserve were also upregulated at this time to match the powerful bioenergetic demands. More importantly, hDPSCs derived from different donors or cultured in various oxygen environments showed similar glycometabolic changes when they began to differentiate. Thus, glycometabolic reprogramming accompanies initiation of hDPSC differentiation and could potentially play a role in the regulation of dental pulp repair.
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Affiliation(s)
- Linyan Wang
- State Key Laboratory of Oral Diseases, Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Li Cheng
- State Key Laboratory of Oral Diseases, Department of Preventive Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Huning Wang
- State Key Laboratory of Oral Diseases, Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Hongying Pan
- State Key Laboratory of Oral Diseases, Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Hui Yang
- State Key Laboratory of Oral Diseases, Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Meiying Shao
- College of Life Sciences, National Engineering Laboratory for Oral Regenerative Medicine Sichuan, University, Chengdu, Sichuan, 610041, China
| | - Tao Hu
- State Key Laboratory of Oral Diseases, Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,State Key Laboratory of Oral Diseases, Department of Preventive Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Ledesma-Martínez E, Mendoza-Núñez VM, Santiago-Osorio E. Mesenchymal Stem Cells Derived from Dental Pulp: A Review. Stem Cells Int 2015; 2016:4709572. [PMID: 26779263 PMCID: PMC4686712 DOI: 10.1155/2016/4709572] [Citation(s) in RCA: 154] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 08/09/2015] [Indexed: 01/09/2023] Open
Abstract
The mesenchymal stem cells of dental pulp (DPSCs) were isolated and characterized for the first time more than a decade ago as highly clonogenic cells that were able to generate densely calcified colonies. Now, DPSCs are considered to have potential as stem cell source for orthopedic and oral maxillofacial reconstruction, and it has been suggested that they may have applications beyond the scope of the stomatognathic system. To date, most studies have shown that, regardless of their origin in third molars, incisors, or exfoliated deciduous teeth, DPSCs can generate mineralized tissue, an extracellular matrix and structures type dentin, periodontal ligament, and dental pulp, as well as other structures. Different groups worldwide have designed and evaluated new efficient protocols for the isolation, expansion, and maintenance of clinically safe human DPSCs in sufficient numbers for various therapeutics protocols and have discussed the most appropriate route of administration, the possible contraindications to their clinical use, and the parameters to be considered for monitoring their clinical efficacy and proper biological source. At present, DPSC-based therapy is promising but because most of the available evidence was obtained using nonhuman xenotransplants, it is not a mature technology.
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Affiliation(s)
- Edgar Ledesma-Martínez
- Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, FES Zaragoza, National Autonomous University of Mexico, 09230 Mexico City, MEX, Mexico
| | - Víctor Manuel Mendoza-Núñez
- Research Unit on Gerontology, FES Zaragoza, National Autonomous University of Mexico, 09230 Mexico City, MEX, Mexico
| | - Edelmiro Santiago-Osorio
- Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, FES Zaragoza, National Autonomous University of Mexico, 09230 Mexico City, MEX, Mexico
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Saitoh I, Inada E, Iwase Y, Noguchi H, Murakami T, Soda M, Kubota N, Hasegawa H, Akasaka E, Matsumoto Y, Oka K, Yamasaki Y, Hayasaki H, Sato M. Choice of Feeders Is Important When First Establishing iPSCs Derived From Primarily Cultured Human Deciduous Tooth Dental Pulp Cells. CELL MEDICINE 2015; 8:9-23. [PMID: 26858904 DOI: 10.3727/215517915x689038] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Feeder cells are generally required to maintain embryonic stem cells (ESCs)/induced pluripotent stem cells (iPSCs). Mouse embryonic fibroblasts (MEFs) isolated from fetuses and STO mouse stromal cell line are the most widely used feeder cells. The aim of this study was to determine which cells are suitable for establishing iPSCs from human deciduous tooth dental pulp cells (HDDPCs). Primary cultures of HDDPCs were cotransfected with three plasmids containing human OCT3/4, SOX2/KLF4, or LMYC/LIN28 and pmaxGFP by using a novel electroporation method, and then cultured in an ESC qualified medium for 15 days. Emerging colonies were reseeded onto mitomycin C-treated MEFs or STO cells. The colonies were serially passaged for up to 26 passages. During this period, colony morphology was assessed to determine whether cells exhibited ESC-like morphology and alkaline phosphatase activity to evaluate the state of cellular reprogramming. HDDPCs maintained on MEFs were successfully reprogrammed into iPSCs, whereas those maintained on STO cells were not. Once established, the iPSCs were maintained on STO cells without loss of pluripotency. Our results indicate that MEFs are better feeder cells than STO cells for establishing iPSCs. Feeder choice is a key factor enabling efficient generation of iPSCs.
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Affiliation(s)
- Issei Saitoh
- Division of Pediatric Dentistry, Graduate School of Medical and Dental Science, Niigata University , Gakkocho-dori, Chuo-ku, Niigata , Japan
| | - Emi Inada
- † Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences , Sakuragaoka, Kagoshima , Japan
| | - Yoko Iwase
- Division of Pediatric Dentistry, Graduate School of Medical and Dental Science, Niigata University , Gakkocho-dori, Chuo-ku, Niigata , Japan
| | - Hirofumi Noguchi
- ‡ Department of Regenerative Medicine, Graduate School of Medicine, University of the Ryukyus , Nishiharatyoaza, Uehara, Okinawa , Japan
| | - Tomoya Murakami
- Division of Pediatric Dentistry, Graduate School of Medical and Dental Science, Niigata University , Gakkocho-dori, Chuo-ku, Niigata , Japan
| | - Miki Soda
- Division of Pediatric Dentistry, Graduate School of Medical and Dental Science, Niigata University , Gakkocho-dori, Chuo-ku, Niigata , Japan
| | - Naoko Kubota
- † Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences , Sakuragaoka, Kagoshima , Japan
| | - Hiroko Hasegawa
- † Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences , Sakuragaoka, Kagoshima , Japan
| | - Eri Akasaka
- † Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences , Sakuragaoka, Kagoshima , Japan
| | - Yuko Matsumoto
- † Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences , Sakuragaoka, Kagoshima , Japan
| | - Kyoko Oka
- § Section of Pediatric Dentistry Department of Oral Growth and Development Fukuoka Dental College , Sawara-ku, Tamura Fukuoka-shi, Fukuoka , Japan
| | - Youichi Yamasaki
- † Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences , Sakuragaoka, Kagoshima , Japan
| | - Haruaki Hayasaki
- Division of Pediatric Dentistry, Graduate School of Medical and Dental Science, Niigata University , Gakkocho-dori, Chuo-ku, Niigata , Japan
| | - Masahiro Sato
- ¶ Section of Gene Expression Regulation, Frontier Science Research Center, Kagoshima University , Sakuragaoka, Kagoshima , Japan
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Ducret M, Fabre H, Degoul O, Atzeni G, McGuckin C, Forraz N, Alliot-Licht B, Mallein-Gerin F, Perrier-Groult E, Farges JC. Manufacturing of dental pulp cell-based products from human third molars: current strategies and future investigations. Front Physiol 2015; 6:213. [PMID: 26300779 PMCID: PMC4526817 DOI: 10.3389/fphys.2015.00213] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 07/16/2015] [Indexed: 01/01/2023] Open
Abstract
In recent years, mesenchymal cell-based products have been developed to improve surgical therapies aimed at repairing human tissues. In this context, the tooth has recently emerged as a valuable source of stem/progenitor cells for regenerating orofacial tissues, with easy access to pulp tissue and high differentiation potential of dental pulp mesenchymal cells. International guidelines now recommend the use of standardized procedures for cell isolation, storage and expansion in culture to ensure optimal reproducibility, efficacy and safety when cells are used for clinical application. However, most dental pulp cell-based medicinal products manufacturing procedures may not be fully satisfactory since they could alter the cells biological properties and the quality of derived products. Cell isolation, enrichment and cryopreservation procedures combined to long-term expansion in culture media containing xeno- and allogeneic components are known to affect cell phenotype, viability, proliferation and differentiation capacities. This article focuses on current manufacturing strategies of dental pulp cell-based medicinal products and proposes a new protocol to improve efficiency, reproducibility and safety of these strategies.
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Affiliation(s)
- Maxime Ducret
- Laboratoire de Biologie Tissulaire et Ingénierie thérapeutique, UMR5305 Centre National de la Recherche Scientifique/Université Claude Bernard Lyon 1 Lyon, France ; Faculté d'Odontologie, Université de Lyon, Université Claude Bernard Lyon 1 Lyon, France ; Hospices Civils de Lyon, Service de Consultations et Traitements Dentaires Lyon, France
| | - Hugo Fabre
- Laboratoire de Biologie Tissulaire et Ingénierie thérapeutique, UMR5305 Centre National de la Recherche Scientifique/Université Claude Bernard Lyon 1 Lyon, France
| | - Olivier Degoul
- CTI-BIOTECH, Cell Therapy Research Institute Meyzieu, France
| | | | - Colin McGuckin
- CTI-BIOTECH, Cell Therapy Research Institute Meyzieu, France
| | - Nico Forraz
- CTI-BIOTECH, Cell Therapy Research Institute Meyzieu, France
| | - Brigitte Alliot-Licht
- Faculté d'Odontologie, Institut National de la Santé et de la Recherche Médicale UMR1064, Centre de Recherche en Transplantation et Immunologie, Université de Nantes Nantes, France
| | - Frédéric Mallein-Gerin
- Laboratoire de Biologie Tissulaire et Ingénierie thérapeutique, UMR5305 Centre National de la Recherche Scientifique/Université Claude Bernard Lyon 1 Lyon, France
| | - Emeline Perrier-Groult
- Laboratoire de Biologie Tissulaire et Ingénierie thérapeutique, UMR5305 Centre National de la Recherche Scientifique/Université Claude Bernard Lyon 1 Lyon, France
| | - Jean-Christophe Farges
- Laboratoire de Biologie Tissulaire et Ingénierie thérapeutique, UMR5305 Centre National de la Recherche Scientifique/Université Claude Bernard Lyon 1 Lyon, France ; Faculté d'Odontologie, Université de Lyon, Université Claude Bernard Lyon 1 Lyon, France ; Hospices Civils de Lyon, Service de Consultations et Traitements Dentaires Lyon, France
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Production of Human Dental Pulp Cells with a Medicinal Manufacturing Approach. J Endod 2015; 41:1492-9. [PMID: 26189777 DOI: 10.1016/j.joen.2015.05.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 04/01/2015] [Accepted: 05/20/2015] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Human dental pulp cells (HDPCs) are generally isolated and cultured with xenogeneic products and in stress conditions that may alter their biological features. However, guidelines from the American Food and Drug Administration and the European Medicines Agency currently recommend the use of protocols compliant with medicinal manufacturing. Our aim was to design an ex vivo procedure to produce large amounts of HDPCs for dentin/pulp and bone engineering according to these international recommendations. METHODS HDPC isolation was performed from pulp explant cultures. After appropriate serum-free medium selection, cultured HDPCs were immunophenotyped with flow cytometry. Samples were then cryopreserved for 510 days. The post-thaw cell doubling time was determined up to passage 4 (P4). Karyotyping was performed by G-band analysis. Osteo/odontoblastic differentiation capability was determined after culture in a differentiation medium by gene expression analysis of osteo/odontoblast markers and mineralization quantification. RESULTS Immunophenotyping of cultured HDPCs revealed a mesenchymal profile of the cells, some of which also expressed the stem/progenitor cell markers CD271, Stro-1, CD146, or MSCA-1. The post-thaw cell doubling times were stable and similar to fresh HDPCs. Cells displayed no karyotype abnormality. Alkaline phosphatase, osteocalcin, and dentin sialophosphoprotein gene expression and culture mineralization were increased in post-thaw HDPC cultures performed in differentiation medium compared with cultures in control medium. CONCLUSIONS We successfully isolated, cryopreserved, and amplified human dental pulp cells with a medicinal manufacturing approach. These findings may constitute a basis on which to investigate how HDPC production can be optimized for human pulp/dentin and bone tissue engineering.
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Hwang HI, Lee TH, Kang KJ, Ryu CJ, Jang YJ. Immunomic Screening of Cell Surface Molecules on Undifferentiated Human Dental Pulp Stem Cells. Stem Cells Dev 2015; 24:1934-45. [PMID: 25919113 DOI: 10.1089/scd.2014.0493] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Human adult dental pulp tissue is a source of adult stem cells that have a potential to differentiate into various tissues, although the primary cell suspensions cultured from pulp tissue are mixtures of both stem cell and nonstem cell populations with heterogeneous phenotypes and various differentiation efficiencies. Therefore, cell surface protein markers on dental pulp stem cells are critical for detection and purification of stem cell populations. Yet, little is known about the cell surface molecules that are specifically associated with the undifferentiated and progenitor state of human adult dental pulp stem cells (hDPSCs). Presently, cell surface proteins expressed on hDPSCs were assessed by screening surface molecules specifically expressed on dentinogenic progenitors. Using a decoy immunization strategy, a set of monoclonal antibodies (MAbs) was generated against undifferentiated pulp progenitor cells. Forty-five hybridomas produced MAbs that interacted weakly, if at all, to differentiated pulp cells. Of these, 19 MAbs (18 IgG, 1 IgM) recognized surface molecules on undifferentiated hDPSCs. By multicolor flow cytometric analysis, 40%-60% of newly identified MAb-positive cells were demonstrated to be positive for the CD44 and CD90 mesenchymal markers. When MAb-positive cells were sorted from the heterogeneous pulp cell suspension, mineralization efficiency was increased three to five times compared with MAb-negative cells. The results suggest that the decoy immunization is an efficient method for isolation of MAbs against dentinogenic progenitors. These MAbs will be helpful for identification and enrichment of hDPSCs for efficient dentin regeneration.
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Affiliation(s)
- Hyo-In Hwang
- 1 Department of Nanobiomedical Science, BK21 PLUS Global Research Center for Regenerative Medicine, Dankook University , Cheonan, Korea
| | - Tae-Hyung Lee
- 1 Department of Nanobiomedical Science, BK21 PLUS Global Research Center for Regenerative Medicine, Dankook University , Cheonan, Korea
| | - Kyung-Jung Kang
- 1 Department of Nanobiomedical Science, BK21 PLUS Global Research Center for Regenerative Medicine, Dankook University , Cheonan, Korea
| | - Chun-Jeih Ryu
- 2 Department of Bioscience and Biotechnology, Sejong University , Seoul, Korea
| | - Young-Joo Jang
- 1 Department of Nanobiomedical Science, BK21 PLUS Global Research Center for Regenerative Medicine, Dankook University , Cheonan, Korea.,3 Laboratory of Oral Biochemistry, the School of Dentistry, Dankook University , Cheonan, Korea
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Liu J, Yu F, Sun Y, Jiang B, Zhang W, Yang J, Xu GT, Liang A, Liu S. Concise Reviews: Characteristics and Potential Applications of Human Dental Tissue-Derived Mesenchymal Stem Cells. Stem Cells 2015; 33:627-38. [PMID: 25447379 DOI: 10.1002/stem.1909] [Citation(s) in RCA: 231] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 10/21/2014] [Accepted: 11/07/2014] [Indexed: 12/16/2022]
Affiliation(s)
- Junjun Liu
- Department of Ophthalmology; Shanghai Tenth People's Hospital
| | - Fang Yu
- Laboratory of Oral Biomedical Science and Translational Medicine, School of Stomatology; Tongji University; Shanghai People's Republic of China
| | - Yao Sun
- Laboratory of Oral Biomedical Science and Translational Medicine, School of Stomatology; Tongji University; Shanghai People's Republic of China
| | - Beizhan Jiang
- Laboratory of Oral Biomedical Science and Translational Medicine, School of Stomatology; Tongji University; Shanghai People's Republic of China
| | - Wenjun Zhang
- Translational Center for Stem Cell Research, Tongji Hospital; Tongji University School of Medicine; Shanghai People's Republic of China
| | - Jianhua Yang
- Department of Ophthalmology; Shanghai Tenth People's Hospital
| | - Guo-Tong Xu
- Department of Ophthalmology; Shanghai Tenth People's Hospital
| | - Aibin Liang
- Translational Center for Stem Cell Research, Tongji Hospital; Tongji University School of Medicine; Shanghai People's Republic of China
| | - Shangfeng Liu
- Department of Ophthalmology; Shanghai Tenth People's Hospital
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Takeda-Kawaguchi T, Sugiyama K, Chikusa S, Iida K, Aoki H, Tamaoki N, Hatakeyama D, Kunisada T, Shibata T, Fusaki N, Tezuka KI. Derivation of iPSCs after culture of human dental pulp cells under defined conditions. PLoS One 2014; 9:e115392. [PMID: 25521610 PMCID: PMC4270765 DOI: 10.1371/journal.pone.0115392] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 11/21/2014] [Indexed: 01/09/2023] Open
Abstract
Human dental pulp cells (hDPCs) are a promising resource for regenerative medicine and tissue engineering and can be used for derivation of induced pluripotent stem cells (iPSCs). However, current protocols use reagents of animal origin (mainly fetal bovine serum, FBS) that carry the potential risk of infectious diseases and unwanted immunogenicity. Here, we report a chemically defined protocol to isolate and maintain the growth and differentiation potential of hDPCs. hDPCs cultured under these conditions showed significantly less primary colony formation than those with FBS. Cell culture under stringently defined conditions revealed a donor-dependent growth capacity; however, once established, the differentiation capabilities of the hDPCs were comparable to those observed with FBS. DNA array analyses indicated that the culture conditions robustly altered hDPC gene expression patterns but, more importantly, had little effect on neither pluripotent gene expression nor the efficiency of iPSC induction. The chemically defined culture conditions described herein are not perfect serum replacements, but can be used for the safe establishment of iPSCs and will find utility in applications for cell-based regenerative medicine.
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Affiliation(s)
- Tomoko Takeda-Kawaguchi
- Department of Oral and Maxillofacial Science, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Ken Sugiyama
- Department of Oral and Maxillofacial Science, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Shunji Chikusa
- Department of Tissue and Organ Development, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Kazuki Iida
- Department of Oral and Maxillofacial Science, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hitomi Aoki
- Department of Tissue and Organ Development, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Naritaka Tamaoki
- Department of Oral and Maxillofacial Science, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Daijiro Hatakeyama
- Department of Oral and Maxillofacial Science, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Takahiro Kunisada
- Department of Tissue and Organ Development, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Toshiyuki Shibata
- Department of Oral and Maxillofacial Science, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Noemi Fusaki
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Ken-ichi Tezuka
- Department of Tissue and Organ Development, Gifu University Graduate School of Medicine, Gifu, Japan
- * E-mail:
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Osteogenic differentiation and gene expression profile of human dental follicle cells induced by human dental pulp cells. J Mol Histol 2014; 46:93-106. [PMID: 25520056 DOI: 10.1007/s10735-014-9604-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 12/15/2014] [Indexed: 12/20/2022]
Abstract
Dental follicle cells (DFCs) differentiate into cementoblasts or osteoblasts under appropriate triggering. However, the mechanism(s) for osteogenic differentiation of DFCs are still unclear. The purpose of this study was to examine the effects of dental papilla-derived human dental pulp cells (hDPCs) on osteogenic differentiation of human DFCs (hDFCs) in vitro and in vivo and to compare gene expression in hDFCs in the presence or absence of hDPCs. To evaluate the osteogenic differentiation of hDFCs induced by hDPCs, hDFCs were cultured in osteogenic medium with or without hDPCs-conditioned medium (CM) in vitro and the cells transplanted into the subcutaneous tissue of immunodeficient mice in vivo. The hDPCs-CM enhanced alkaline phosphatase promoter activity of hDFCs in osteogenic culture. The expression of several osteoblast marker genes was increased in hDFCs treated with hDPCs-CM compared to hDFCs in normal medium. The hDFCs induced by hDPCs-CM also produced more calcified nodules than hDFCs in normal medium. In transplantation experiments, hDPCs-CM promoted the osteogenic induction and bone formation of hDFCs. Microarray analysis and quantitative real-time PCR showed that osteogenesis-related genes including WNT2, VCAN, OSR2, FOSB, and POSTN in hDFCs were significantly upregulated after induction by hDPCs-CM compared to hDFCs in normal medium. These findings indicate that hDPCs could increase the expression of osteogenic genes in hDFCs and stimulate their osteogenesis and could be a cellular resource for bone regeneration therapy when induced by hDPCs-derived factors.
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The homeobox gene DLX4 promotes generation of human induced pluripotent stem cells. Sci Rep 2014; 4:7283. [PMID: 25471527 PMCID: PMC4255186 DOI: 10.1038/srep07283] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Accepted: 11/14/2014] [Indexed: 12/26/2022] Open
Abstract
The reprogramming of somatic cells into induced pluripotent stem cells (iPSCs) by defined transcription factors has been a well-established technique and will provide an invaluable resource for regenerative medicine. However, the low reprogramming efficiency of human iPSC is still a limitation for clinical application. Here we showed that the reprogramming potential of human dental pulp cells (DPCs) obtained from immature teeth is much higher than those of mature teeth DPCs. Furthermore, immature teeth DPCs can be reprogrammed by OCT3/4 and SOX2, conversely these two factors are insufficient to convert mature teeth DPCs to pluripotent states. Using a gene expression profiles between these two DPC groups, we identified a new transcript factor, distal-less homeobox 4 (DLX4), which was highly expressed in immature teeth DPCs and significantly promoted human iPSC generation in combination with OCT3/4, SOX2, and KLF4. We further show that activation of TGF-β signaling suppresses the expression of DLX4 in DPCs and impairs the iPSC generation of DPCs. Our findings indicate that DLX4 can functionally replace c-MYC and supports efficient reprogramming of immature teeth DPCs.
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