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Ma Y, Yang X, Chen Y, Zhang J, Gai K, Chen J, Huo F, Guo Q, Guo W, Gou M, Yang B, Tian W. Biomimetic Peridontium Patches for Functional Periodontal Regeneration. Adv Healthc Mater 2023; 12:e2202169. [PMID: 36398560 DOI: 10.1002/adhm.202202169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/26/2022] [Indexed: 11/19/2022]
Abstract
The unique structure of the periodontium, including the alveolar bone, cementum, and periodontal ligament (PDL), presents difficulties for the regeneration of its intricate organization. Irreversible structural breakdown of the periodontium increases the risk of tooth loosening and loss. Although the current therapies can restore the periodontal hard tissues to a certain extent, the PDL with its high directionality of multiple groups with different orientations and functions cannot be reconstructed. Here, biomimetic peridontium patches (BPPs) for functional periodontal regeneration using a microscale continuous digital light projection bioprinting method is reported. Orthotopic transplantation in the mandibles shows effective periodontal reconstruction. The resulting bioengineered tissues closely resembles natural periodontium in terms of the "sandwich structures," especially the correctly oriented fibers, showing different and specific orientation in different regions of the tooth root, which has never been found in previous studies. Furthermore, after the assessment of clinically functional properties it is found that the regenerative periodontium can achieve stable tooth movement under orthodontic migration force with no adverse consequences. Overall, the BPPs promote reconstruction of the functional periodontium and the complex microstructure of the periodontal tissue, providing a proof of principle for the clinical functional treatment of periodontal defects.
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Affiliation(s)
- Yue Ma
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, National Engineering Laboratory for Oral Regenerative Medicine, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, P. R. China
| | - Xueting Yang
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, National Engineering Laboratory for Oral Regenerative Medicine, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, P. R. China
| | - Yan Chen
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, National Engineering Laboratory for Oral Regenerative Medicine, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, P. R. China
| | - Jiumeng Zhang
- Department of Biotherapy, Cancer Center, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Kuo Gai
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, National Engineering Laboratory for Oral Regenerative Medicine, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Pedodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, P. R. China
| | - Jinlong Chen
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, National Engineering Laboratory for Oral Regenerative Medicine, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, P. R. China
| | - Fangjun Huo
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, National Engineering Laboratory for Oral Regenerative Medicine, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, P. R. China
| | - Qiang Guo
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, P. R. China
| | - Weihua Guo
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, National Engineering Laboratory for Oral Regenerative Medicine, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Pedodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, P. R. China
| | - Maling Gou
- Department of Biotherapy, Cancer Center, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Bo Yang
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, National Engineering Laboratory for Oral Regenerative Medicine, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, P. R. China
| | - Weidong Tian
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, National Engineering Laboratory for Oral Regenerative Medicine, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, P. R. China
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Morsczeck C. Mechanisms during Osteogenic Differentiation in Human Dental Follicle Cells. Int J Mol Sci 2022; 23:ijms23115945. [PMID: 35682637 PMCID: PMC9180518 DOI: 10.3390/ijms23115945] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/19/2022] [Accepted: 05/23/2022] [Indexed: 12/22/2022] Open
Abstract
Human dental follicle cells (DFCs) as periodontal progenitor cells are used for studies and research in regenerative medicine and not only in dentistry. Even if innovative regenerative therapies in medicine are often considered the main research area for dental stem cells, these cells are also very useful in basic research and here, for example, for the elucidation of molecular processes in the differentiation into mineralizing cells. This article summarizes the molecular mechanisms driving osteogenic differentiation of DFCs. The positive feedback loop of bone morphogenetic protein (BMP) 2 and homeobox protein DLX3 and a signaling pathway associated with protein kinase B (AKT) and protein kinase C (PKC) are presented and further insights related to other signaling pathways such as the WNT signaling pathway are explained. Subsequently, some works are presented that have investigated epigenetic modifications and non-coding ncRNAs and their connection with the osteogenic differentiation of DFCs. In addition, studies are presented that have shown the influence of extracellular matrix molecules or fundamental biological processes such as cellular senescence on osteogenic differentiation. The putative role of factors associated with inflammatory processes, such as interleukin 8, in osteogenic differentiation is also briefly discussed. This article summarizes the most important insights into the mechanisms of osteogenic differentiation in DFCs and is intended to be a small help in the direction of new research projects in this area.
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Affiliation(s)
- Christian Morsczeck
- Department of Oral and Maxillofacial Surgery, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany
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3
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Huang Y, Liu L, Liu Q, Huo F, Hu X, Guo S, Tian W. Dental follicle cells derived small extracellular vesicles inhibit pathogenicity of Porphyromonas gingivalis. Oral Dis 2022. [PMID: 35509129 DOI: 10.1111/odi.14239] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 04/10/2022] [Accepted: 04/29/2022] [Indexed: 02/05/2023]
Abstract
OBJECTIVE It aims to explore the effect of dental follicle cells derived small extracellular vesicles (D-sEV) with or without lipopolysaccharides (LPS) pretreating on the pathogenicity of Porphyromonas gingivalis (P. gingivalis). METHODS The antibacterial effects of D-sEV were evaluated by measuring the growth, biofilm formation, gingipains and type IX secretion system (T9SS) expression of P. gingivalis. And the influence of D-sEV on P. gingivalis adhesion, invasion, cytotoxicity, and host immune response was examined in gingival epithelial cells (GECs). Then P. gingivalis treated with D-sEV was applied to investigate the pathogenicity in experimental periodontitis of mice. RESULTS It showed that both D-sEV and P. gingivalis LPS pretreated D-sEV (L-D-sEV) could target P. gingivalis, inhibit their growth and biofilm formation, and hinder the attachment and invasion in GECs, therefore remarkably decreasing P. gingivalis cytotoxicity and the expression of IL-1β and IL-6 in GECs. In addition, they significantly reduced the expression of P. gingivalis virulence factors (gingipains and T9SS). In vivo, it showed that the bacteria in the gingiva were significantly decreased after sEV treatment. Meanwhile, less bone loss and fewer inflammatory cells infiltration and osteoclast formation in D-sEV and L-D-sEV groups. CONCLUSION Both D-sEV and L-D-sEV were proven to inhibit the pathogenicity of P.gingivalis and thus prevented the development of periodontitis.
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Affiliation(s)
- Yanli Huang
- State Key Laboratory of Oral Disease & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Oral Regenerative Medicine, School of Stomatology, Sichuan University, West China, Chengdu, People's Republic of China.,Engineering Research Center of Oral Translational Medicine, Ministry of Education, School of Stomatology, Sichuan University, West China, Chengdu, People's Republic of China.,Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Li Liu
- State Key Laboratory of Oral Disease & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Oral Regenerative Medicine, School of Stomatology, Sichuan University, West China, Chengdu, People's Republic of China.,Engineering Research Center of Oral Translational Medicine, Ministry of Education, School of Stomatology, Sichuan University, West China, Chengdu, People's Republic of China.,Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Qian Liu
- State Key Laboratory of Oral Disease & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Oral Regenerative Medicine, School of Stomatology, Sichuan University, West China, Chengdu, People's Republic of China.,Engineering Research Center of Oral Translational Medicine, Ministry of Education, School of Stomatology, Sichuan University, West China, Chengdu, People's Republic of China.,Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Fangjun Huo
- State Key Laboratory of Oral Disease & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Oral Regenerative Medicine, School of Stomatology, Sichuan University, West China, Chengdu, People's Republic of China.,Engineering Research Center of Oral Translational Medicine, Ministry of Education, School of Stomatology, Sichuan University, West China, Chengdu, People's Republic of China
| | - Xingyu Hu
- State Key Laboratory of Oral Disease & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Oral Regenerative Medicine, School of Stomatology, Sichuan University, West China, Chengdu, People's Republic of China.,Engineering Research Center of Oral Translational Medicine, Ministry of Education, School of Stomatology, Sichuan University, West China, Chengdu, People's Republic of China.,Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Shujuan Guo
- State Key Laboratory of Oral Disease & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Oral Regenerative Medicine, School of Stomatology, Sichuan University, West China, Chengdu, People's Republic of China.,Engineering Research Center of Oral Translational Medicine, Ministry of Education, School of Stomatology, Sichuan University, West China, Chengdu, People's Republic of China.,Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Weidong Tian
- State Key Laboratory of Oral Disease & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Oral Regenerative Medicine, School of Stomatology, Sichuan University, West China, Chengdu, People's Republic of China.,Engineering Research Center of Oral Translational Medicine, Ministry of Education, School of Stomatology, Sichuan University, West China, Chengdu, People's Republic of China.,Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, People's Republic of China
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Mercado-Rubio MD, Pérez-Argueta E, Zepeda-Pedreguera A, Aguilar-Ayala FJ, Peñaloza-Cuevas R, Kú-González A, Rojas-Herrera RA, Rodas-Junco BA, Nic-Can GI. Similar Features, Different Behaviors: A Comparative In VitroStudy of the Adipogenic Potential of Stem Cells from Human Follicle, Dental Pulp, and Periodontal Ligament. J Pers Med 2021; 11:jpm11080738. [PMID: 34442382 PMCID: PMC8401480 DOI: 10.3390/jpm11080738] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 07/24/2021] [Accepted: 07/24/2021] [Indexed: 12/21/2022] Open
Abstract
Dental tissue-derived mesenchymal stem cells (DT-MSCs) are a promising resource for tissue regeneration due to their multilineage potential. Despite accumulating data regarding the biology and differentiation potential of DT-MSCs, few studies have investigated their adipogenic capacity. In this study, we have investigated the mesenchymal features of dental pulp stem cells (DPSCs), as well as the in vitro effects of different adipogenic media on these cells, and compared them to those of periodontal ligament stem cells (PLSCs) and dental follicle stem cells (DFSCs). DFSC, PLSCs, and DPSCs exhibit similar morphology and proliferation capacity, but they differ in their self-renewal ability and expression of stemness markers (e.g OCT4 and c-MYC). Interestingly, DFSCs and PLSCs exhibited more lipid accumulation than DPSCs when induced to adipogenic differentiation. In addition, the mRNA levels of adipogenic markers (PPAR, LPL, and ADIPOQ) were significantly higher in DFSCs and PLSCs than in DPSCs, which could be related to the differences in the adipogenic commitment in those cells. These findings reveal that the adipogenic capacity differ among DT-MSCs, features that might be advantageous to increasing our understanding about the developmental origins and regulation of adipogenic commitment.
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Affiliation(s)
- Melissa D. Mercado-Rubio
- Facultad de Ingeniería Química, Universidad Autónoma de Yucatán, Periférico Norte Kilómetro 33.5, Tablaje Catastral 13615, Chuburná de Hidalgo Inn, Mérida 97203, Yucatán, Mexico; (M.D.M.-R.); (E.P.-A.); (A.Z.-P.); (R.A.R.-H.)
| | - Erick Pérez-Argueta
- Facultad de Ingeniería Química, Universidad Autónoma de Yucatán, Periférico Norte Kilómetro 33.5, Tablaje Catastral 13615, Chuburná de Hidalgo Inn, Mérida 97203, Yucatán, Mexico; (M.D.M.-R.); (E.P.-A.); (A.Z.-P.); (R.A.R.-H.)
| | - Alejandro Zepeda-Pedreguera
- Facultad de Ingeniería Química, Universidad Autónoma de Yucatán, Periférico Norte Kilómetro 33.5, Tablaje Catastral 13615, Chuburná de Hidalgo Inn, Mérida 97203, Yucatán, Mexico; (M.D.M.-R.); (E.P.-A.); (A.Z.-P.); (R.A.R.-H.)
| | - Fernando J. Aguilar-Ayala
- Laboratorio Translacional de Células Troncales-Facultad de Odontología, Universidad Autónoma de Yucatán, Calle 61-A X Av. Itzaes Costado Sur “Parque de la Paz”, Col. Centro, Mérida 97000, Yucatán, Mexico; (F.J.A.-A.); (R.P.-C.)
| | - Ricardo Peñaloza-Cuevas
- Laboratorio Translacional de Células Troncales-Facultad de Odontología, Universidad Autónoma de Yucatán, Calle 61-A X Av. Itzaes Costado Sur “Parque de la Paz”, Col. Centro, Mérida 97000, Yucatán, Mexico; (F.J.A.-A.); (R.P.-C.)
| | - Angela Kú-González
- Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de Yucatán, Calle 43 No. 130, Col. Chuburná de Hidalgo, Mérida 97200, Yucatán, Mexico;
| | - Rafael A. Rojas-Herrera
- Facultad de Ingeniería Química, Universidad Autónoma de Yucatán, Periférico Norte Kilómetro 33.5, Tablaje Catastral 13615, Chuburná de Hidalgo Inn, Mérida 97203, Yucatán, Mexico; (M.D.M.-R.); (E.P.-A.); (A.Z.-P.); (R.A.R.-H.)
| | - Beatriz A. Rodas-Junco
- Laboratorio Translacional de Células Troncales-Facultad de Odontología, Universidad Autónoma de Yucatán, Calle 61-A X Av. Itzaes Costado Sur “Parque de la Paz”, Col. Centro, Mérida 97000, Yucatán, Mexico; (F.J.A.-A.); (R.P.-C.)
- CONACYT-Facultad de Ingeniería Química, Universidad Autónoma de Yucatán, Periférico Norte Kilómetro 33.5, Tablaje Catastral 13615, Chuburná de Hidalgo Inn, Mérida 97203, Yucatán, Mexico
- Correspondence: (B.A.R.-J.); or (G.I.N.-C.)
| | - Geovanny I. Nic-Can
- Laboratorio Translacional de Células Troncales-Facultad de Odontología, Universidad Autónoma de Yucatán, Calle 61-A X Av. Itzaes Costado Sur “Parque de la Paz”, Col. Centro, Mérida 97000, Yucatán, Mexico; (F.J.A.-A.); (R.P.-C.)
- CONACYT-Facultad de Ingeniería Química, Universidad Autónoma de Yucatán, Periférico Norte Kilómetro 33.5, Tablaje Catastral 13615, Chuburná de Hidalgo Inn, Mérida 97203, Yucatán, Mexico
- Correspondence: (B.A.R.-J.); or (G.I.N.-C.)
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E LL, Zhang R, Li CJ, Zhang S, Ma XC, Xiao R, Liu HC. Effects of rhBMP-2 on Bone Formation Capacity of Rat Dental Stem/Progenitor Cells from Dental Follicle and Alveolar Bone Marrow. Stem Cells Dev 2021; 30:441-457. [PMID: 33798004 DOI: 10.1089/scd.2020.0170] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Dental stem/progenitor cells are a promising cell sources for alveolar bone (AB) regeneration because of their same embryonic origin and superior osteogenic potential. However, their molecular processes during osteogenic differentiation remain unclear. The objective of this study was to identify the responsiveness of dental follicle cells (DFCs) and AB marrow-derived mesenchymal stem cells (ABM-MSCs) to recombinant human bone morphogenetic protein-2 (rhBMP-2). These cells expressed vimentin and MSC markers and did not express cytokeratin and hematopoietic stem cell markers and showed multilineage differentiation potential under specific culture conditions. DFCs exhibited higher proliferation and colony-forming unit-fibroblast efficiency than ABM-MSCs; rhBMP-2 induced DFCs to differentiate toward a cementoblast/osteoblast phenotype and ABM-MSCs to differentiate only toward a osteoblast phenotype; and rhBMP-2-induced DFCs exhibited higher osteogenic differentiation potential than ABM-MSCs. These cells adhered, grew, and produced extracellular matrix on nanohydroxyapatite/collagen/poly(l-lactide) (nHAC/PLA). During a 14-day culture on nHAC/PLA, the extracellular alkaline phosphatase (ALP) activity of DFCs decreased gradually and that of ABM-MSCs increased gradually; rhBMP-2 enhanced their extracellular ALP activity, intracellular osteocalcin (OCN), and osteopontin (OPN) protein expression; and DFCs exhibited higher extracellular ALP activity and intracellular OCN protein expression than ABM-MSCs. When implanted subcutaneously in severe combined immunodeficient mice for 3 months, DFCs+nHAC/PLA+rhBMP-2 obtained higher percentage of bone formation area, OCN, and cementum attachment protein expression and lower OPN expression than ABM-MSCs+nHAC/PLA+rhBMP-2. These results showed that DFCs possessed superior proliferation and osteogenic differentiation potential in vitro, and formed higher quantity and quality bones in vivo. It suggested that DFCs might exhibit a more sensitive responsiveness to rhBMP-2, so that DFCs enter a relatively mature stage of osteogenic differentiation earlier than ABM-MSCs after rhBMP-2 induction. The findings imply that these dental stem/progenitor cells are alternative sources for AB engineering in regenerative medicine, and developing dental tissue may provide better source for stem/progenitor cells.
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Affiliation(s)
- Ling-Ling E
- Institute of Stomatology, First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Rong Zhang
- Institute of Stomatology, First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Chuan-Jie Li
- Institute of Stomatology, First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Shuo Zhang
- Institute of Stomatology, First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Xiao-Cao Ma
- Institute of Stomatology, First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Rui Xiao
- Institute of Stomatology, First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Hong-Chen Liu
- Institute of Stomatology, First Medical Center of Chinese PLA General Hospital, Beijing, China
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Shi W, Guo S, Liu L, Liu Q, Huo F, Ding Y, Tian W. Small Extracellular Vesicles from Lipopolysaccharide-Preconditioned Dental Follicle Cells Promote Periodontal Regeneration in an Inflammatory Microenvironment. ACS Biomater Sci Eng 2020; 6:5797-5810. [PMID: 33320548 DOI: 10.1021/acsbiomaterials.0c00882] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Lipopolysaccharide (LPS)-induced inflammatory microenvironment can enhance the dental follicle cells (DFCs) proliferation, differentiation, and adhesion abilities beneficial to periodontal regeneration, which possibly attributes the success to exosomes according to recent studies. This study aimed to investigate the therapeutic efficacy and underlying mechanisms of LPS-preconditioned DFC-derived small extracellular vesicles (sEVs), which enriched exosomes for periodontal regeneration in an inflammatory microenvironment. LPS preconditioning could significantly increase the secretion of sEVs derived from DFCs. Both LPS-preconditioned dental follicle cell-derived sEV (L-D-sEV) and DFC-derived sEV (D-sEV) promoted the proliferation of periodontal ligament cells from periodontitis (p-PDLCs) with a dose-dependent and saturable manner and also enhanced the migration and differentiation of p-PDLCs. Furthermore, L-D-sEV showed a modest benefit than D-sEV to promote p-PDLCs differentiation. In vivo, an L-D-sEV-loaded hydrogel applied in the treatment of periodontitis was beneficial to repair lost alveolar bone in the early stage of treatment and to maintain the level of alveolar bone in the late stage of treatment in experimental periodontitis rats, which could partly decrease the expression of the RANKL/OPG ratio. In conclusion, L-D-sEV was beneficial to p-PDLCs forming an integrity periodontal tissue. The biological injectable L-D-sEV-loaded hydrogel could be used as a treatment method for experimental periodontitis in rats, promoting periodontal tissue regeneration and providing a new alternative cell therapy method for periodontal tissue regeneration.
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Affiliation(s)
- Weiwei Shi
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Shujuan Guo
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Li Liu
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Qian Liu
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Fangjun Huo
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Yi Ding
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Weidong Tian
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
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Tang J, Qing MF, Li M, Gao Z. Dexamethasone inhibits BMP7-induced osteogenic differentiation in rat dental follicle cells via the PI3K/AKT/GSK-3β/β-catenin pathway. Int J Med Sci 2020; 17:2663-2672. [PMID: 33162794 PMCID: PMC7645344 DOI: 10.7150/ijms.44231] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 08/29/2020] [Indexed: 02/05/2023] Open
Abstract
Impacted third molars are commonly seen in teenagers and young adults and can cause considerable suffering. Preventing eruption of the third molars can reduce pain at the source. Our previous study has shown that dexamethasone (DEX) at a certain concentration can prevent the eruption of third molars without damaging alveolar bone in Sprague-Dawley (SD) rats, but the relevant molecular mechanisms need to be explored. This study aimed to explore the effects of high concentrations of DEX on osteogenic signaling pathways, including BMP/Smad and Wnt/β-catenin pathways, in rat dental follicle cells (rDFCs) and to elucidate the possible mechanisms. The results showed that BMP7 induced osteogenic differentiation by increasing the activity of ALP and the protein levels of OPN in rDFCs. DEX decreased endogenous BMP7 and phosphorylated Smad1/5/8 expression as well as BMP7-induced osteogenic differentiation. DEX also reduced the mRNA and protein levels of β-catenin by enhancing the expression of GSK-3β. In addition, regardless of DEX intervention, overexpression of BMP7 promoted the expression of β-catenin, while knockdown of BMP7 attenuated it. Further investigation revealed that overexpression of BMP7 attenuated the DEX-mediated inhibition of AKT and GSK-3β phosphorylation, but knockdown of BMP7 exerted the opposite effects. This study suggests that high concentrations of DEX may inhibit the expression of β-catenin via the PI3K/AKT/GSK-3β pathway in a manner mediated by BMP7. The findings further illustrate the possible molecular mechanisms by which DEX prevents tooth development.
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Affiliation(s)
- Jing Tang
- Department of Stomatology, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Yuzhong District, Chongqing 400010, P.R. China.,Chongqing Key Laboratory of Oral Disease and Biomedical Sciences, 426 North Songshi Road, Yubei District, Chongqing 401147, P.R. China
| | - Mao-Feng Qing
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, Sec. 3, Renminnan Road, 610041 Chengdu, Sichuan, P.R. China
| | - Min Li
- Department of Stomatology, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Yuzhong District, Chongqing 400010, P.R. China.,Chongqing Key Laboratory of Oral Disease and Biomedical Sciences, 426 North Songshi Road, Yubei District, Chongqing 401147, P.R. China
| | - Zhi Gao
- Department of Stomatology, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Yuzhong District, Chongqing 400010, P.R. China
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8
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Liu Y, Zhang X, Sun X, Wang X, Zhang C, Zheng S. Abnormal bone remodelling activity of dental follicle cells from a cleidocranial dysplasia patient. Oral Dis 2018; 24:1270-1281. [PMID: 29787635 DOI: 10.1111/odi.12900] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 05/07/2018] [Accepted: 05/15/2018] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To explore the role of dental follicle cells (DFCs) with a novel cleidocranial dysplasia (CCD) causative gene RUNX2 mutation (DFCsRUNX2+/m ) in delayed permanent tooth eruption. MATERIALS AND METHODS A CCD patient with typical clinical features was involved in this study. DFCsRUNX2+/m were cultured and DNA was extracted for RUNX2 mutation screening. Measurements of cell proliferation, alkaline phosphatase (ALP) activity, alizarin red staining and osteoblast-specific genes expression were performed to assess osteogenesis of DFCsRUNX2+/m . Co-culture of DFCs and peripheral blood mononuclear cells (PBMCs), followed tartrate-resistant acid phosphatase (TRAP) staining, real-time PCR and western blot were performed to evaluate osteoclast-inductive capacity of DFCsRUNX2+/m . RESULTS A missense RUNX2 mutation (c. 557G>C) was found in DFCsRUNX2+/m from the CCD patient. Compared with normal controls, this mutation did not affect the proliferation of DFCsRUNX2+/m , but down-regulated the expression of osteogenesis-related genes, leading to a decrease in ALP activity and mineralisation. Co-culture results showed that DFCsRUNX2+/m reduced the formation of TRAP+ multinucleated cells and the expression of osteoclastogenesis-associated genes. Furthermore, the mutation reduced the ratio of RANKL/OPG in DFCsRUNX2+/m . CONCLUSIONS DFCsRUNX2+/m disturbs bone remodelling activity during tooth eruption through RANK/RANKL/OPG signalling pathway and may thus be responsible for impaired permanent tooth eruption in CCD patients.
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Affiliation(s)
- Yang Liu
- Department of Preventive Dentistry, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Xianli Zhang
- Department of Preventive Dentistry, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China.,Department of Stomatology, Xuanwu Hospital Capital Medical University, Beijing, China
| | - Xiangyu Sun
- Department of Preventive Dentistry, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Xiaozhe Wang
- Department of Preventive Dentistry, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Chenying Zhang
- Department of Preventive Dentistry, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Shuguo Zheng
- Department of Preventive Dentistry, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
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9
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Okada H, Takahashi K, Ogura N, Tomoki R, Ito K, Kondoh T. Plasma rich in growth factors stimulates proliferation, migration, and gene expression associated with bone formation in human dental follicle cells. J Dent Sci 2016; 11:245-252. [PMID: 30894980 PMCID: PMC6395260 DOI: 10.1016/j.jds.2015.12.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 12/01/2015] [Indexed: 02/04/2023] Open
Abstract
Background/purpose Plasma rich in growth factors (PRGFs), which is prepared from autologous blood from patients, has been reported with regards to bone regeneration for dental implants. Human dental follicle cells (hDFCs) have the capacity to commit to multiple cell types such as the osteoblastic lineage. The aim of this study is to evaluate the effects of PRGFs for mineralization in hDFCs. Materials and methods PRGFs was prepared from whole blood centrifuged at 460g for 8 minutes. hDFCs isolated from the dental follicle with collagenase/dispase were cultured with growth medium or osteogenic induction medium (OIM) containing PRGFs or fetal bovine serum. Concentrations of the growth factors were examined using an enzyme-linked immunosorbent assay kit. A cell migration assay was used for two-dimensional movement. Gene expressions were examined with real-time polymerase chain reaction using a DyNAmo SYBR Green quantitative polymerase chain reaction kit. Results The platelet concentration in PRGF Fraction 2 was 2.14-fold higher than in whole blood. White blood cells were not detected in PRGFs. Transforming growth factor-β levels were higher than insulin-like growth factor-1, platelet-derived growth factor-AB and -BB, and vascular endothelial growth factors in PRGF Fraction 2. Proliferation and migration by hDFCs increased in OIM supplemented with PRGFs in a dose-dependent manner and were higher in hDFCs cultured in OIM plus 10% PRGFs compared with OIM plus 10% fetal bovine serum. PRGFs upregulated the gene expression of type I collagen, osteomodulin, alkaline phosphatase, bone morphogenic protein-4, and transforming growth factor-β in hDFCs. Conclusion PRGFs may promote bone regeneration due to it including high levels of growth factors.
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Affiliation(s)
- Hitoe Okada
- Department of Maxillofacial Surgery, Nihon University School of Dentistry at Matsudo, Matsudo, Japan
| | - Kosuke Takahashi
- Department of Maxillofacial Surgery, Nihon University School of Dentistry at Matsudo, Matsudo, Japan.,Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo, Matsudo, Japan
| | - Naomi Ogura
- Department of Maxillofacial Surgery, Nihon University School of Dentistry at Matsudo, Matsudo, Japan.,Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo, Matsudo, Japan
| | - Risa Tomoki
- Department of Maxillofacial Surgery, Nihon University School of Dentistry at Matsudo, Matsudo, Japan
| | - Ko Ito
- Department of Maxillofacial Surgery, Nihon University School of Dentistry at Matsudo, Matsudo, Japan.,Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo, Matsudo, Japan
| | - Toshirou Kondoh
- Department of Maxillofacial Surgery, Nihon University School of Dentistry at Matsudo, Matsudo, Japan.,Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo, Matsudo, Japan
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10
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Tian Y, Bai D, Guo W, Li J, Zeng J, Yang L, Jiang Z, Feng L, Yu M, Tian W. Comparison of human dental follicle cells and human periodontal ligament cells for dentin tissue regeneration. Regen Med 2016; 10:461-79. [PMID: 26022765 DOI: 10.2217/rme.15.21] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
AIM To compare the odontogenic potential of human dental follicle cells (DFCs) and periodontal ligament cells (PDLCs). MATERIALS & METHODS In vitro and in vivo characterization studies of DFCs and PDLCs were performed comparatively. DFCs and PDLCs were subcutaneously implanted into the dorsum of mice for 8 weeks after combined with treated dentin matrix scaffolds respectively. RESULTS Proteomic analysis identified 32 differentially expressed proteins in DFCs and PDLCs. Examination of the harvested grafts showed PDLCs could form the dentin-like tissues as DFCs did. However, the structure of dentin tissues generated by DFCs was more complete. CONCLUSION PDLCs could contribute to regenerate dentin-like tissues in the inductive microenvironment of treated dentin matrix. DFCs presented more remarkable dentinogenic capability than PDLCs did.
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Affiliation(s)
- Ye Tian
- 1State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,2National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,3Department of Orthodontics, West China School of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Ding Bai
- 1State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,3Department of Orthodontics, West China School of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Weihua Guo
- 1State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,2National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,4Department of Pedodontics, West China School of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Jie Li
- 2National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,5College of Life Science, Sichuan University, Chengdu, P.R. China
| | - Jin Zeng
- 1State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,2National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Longqiang Yang
- 1State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,2National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,4Department of Pedodontics, West China School of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Zongting Jiang
- 1State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,2National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Lian Feng
- 1State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,2National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Mei Yu
- 1State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,2National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Weidong Tian
- 1State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,2National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
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11
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Nemoto E, Sakisaka Y, Tsuchiya M, Tamura M, Nakamura T, Kanaya S, Shimonishi M, Shimauchi H. Wnt3a signaling induces murine dental follicle cells to differentiate into cementoblastic/osteoblastic cells via an osterix-dependent pathway. J Periodontal Res 2015; 51:164-74. [PMID: 26095156 DOI: 10.1111/jre.12294] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/28/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVE Dental follicle cells, putative progenitor cells for cementoblasts, osteoblasts and periodontal ligament cells, interplay with Hertwig's epithelial root sheath (HERS) cells during tooth root formation, in which HERS is considered to have an inductive role in initiating cementogenesis by epithelial-mesenchymal interaction. However, the specific mechanisms controlling the cementoblast/osteoblast differentiation of dental follicle cells are not fully understood. Canonical Wnt signaling has been implicated in increased bone formation by controlling mesenchymal stem cell or osteoblastic cell functions. This study examined the possible expression of canonical Wnt ligand in HERS and the role of Wnt signaling during the cementoblast/osteoblast differentiation of dental follicle cells. MATERIAL AND METHODS The expression of Wnt3a, a representative canonical Wnt ligand, in HERS was assessed by immunohistochemistry. The differentiation and function of immortalized murine dental follicle cells were evaluated by measuring alkaline phosphatase (ALP, Alpl) activity and osteogenic gene expression. RESULTS We identified the expression of Wnt3a in HERS during mouse tooth root development by immunohistochemistry as well as in cultured human epithelial rest cells of Malassez by real-time polymerase chain reaction, while no expression of Wnt3a was detected in cultured dental mesenchymal cells. Exposure of immortalized murine dental follicle cells to Wnt3a-induced ALP activity as well as expression of the Alpl gene. Pretreatment of cells with Dickkopf-1, a potent canonical Wnt antagonist, markedly attenuated the effect of Wnt3a on ALP expression. Furthermore, Wnt3a induced transcriptional activity of runt-related transcription factor 2 (Runx2) and expression of osterix at gene and/or protein levels. Treatment with osterix-small interfering RNA significantly inhibited Wnt3a-induced ALP expression at gene and protein levels. CONCLUSION These findings suggest that HERS has a potential role in stimulating cementoblast/osteoblast differentiation of dental follicle cells via the Wnt/β-catenin signaling pathway.
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Affiliation(s)
- E Nemoto
- Department of Periodontology and Endodontology, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Y Sakisaka
- Department of Periodontology and Endodontology, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - M Tsuchiya
- Department of Oral Diagnosis, Tohoku University Graduate School of Dentistry, Sendai, Japan.,Tohoku Fukushi University, Sendai, Japan
| | - M Tamura
- Department of Biochemistry and Molecular Biology, Hokkaido University Graduate School of Dentistry, Sapporo, Japan
| | - T Nakamura
- Department of Pediatric Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan.,Liaison Center for Innovative Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - S Kanaya
- Department of Periodontology and Endodontology, Tohoku University Graduate School of Dentistry, Sendai, Japan.,Liaison Center for Innovative Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - M Shimonishi
- Department of Comprehensive Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - H Shimauchi
- Department of Periodontology and Endodontology, Tohoku University Graduate School of Dentistry, Sendai, Japan
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Peng Z, Liu L, Wei X, Ling J. Expression of Oct-4, SOX-2, and MYC in dental papilla cells and dental follicle cells during in-vivo tooth development and in-vitro co-culture. Eur J Oral Sci 2015; 122:251-8. [PMID: 25039286 DOI: 10.1111/eos.12141] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/10/2014] [Indexed: 01/06/2023]
Abstract
During tooth development, the special structure of dental follicle and dental papilla enables dental papilla cells (DPCs) and dental follicle cells (DFCs) to make contact with each other. Octamer-binding transcription factor 4 (Oct-4), sex determining region Y box-2 (SOX-2), and cellular homologue of avian myelocytomatosis virus oncogene (MYC) (OSM) are associated with reprogramming and pluripotency. However, whether the expression of OSM could be activated through cell-cell communication is not known. In this study, the distribution of OSM in rat tooth germ was investigated by immunohistochemical staining. An in-vitro co-culture system of DPCs and DFCs was established. Cell proliferation, cell apoptosis, cell cycle stages, and expression of OSM were investigated by Cell Counting Kit 8 (CCK8) analysis, flow cytometry, real-time PCR, and immunohistochemical staining. We found that Oct-4 and SOX-2 were strongly expressed in tooth germ on days 7 and 9 after birth, whereas MYC was expressed only on day 9. Cell proliferation and apoptosis were inhibited, the cell cycle was arrested in the G0/G1 phase, and the propidium iodide (PI) value was downregulated. Expression of Oct-4 and SOX-2 was significantly elevated in both cell types after 3 d of co-culture, whereas expression of MYC was not significantly elevated until day 5. These results indicate that the optimized microenvironment with cell-cell communication enhanced the expression of reprogramming markers associated with reprogramming capacity in DPCs and DFCs, both in vivo and in vitro.
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Affiliation(s)
- Zhengjun Peng
- Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatological Hospital, Guangdong Province Key Laboratory of Stomatology Guangzhou, Sun Yat-Sen University, Guangdong, China
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13
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Chen G, Sun Q, Xie L, Jiang Z, Feng L, Yu M, Guo W, Tian W. Comparison of the Odontogenic Differentiation Potential of Dental Follicle, Dental Papilla, and Cranial Neural Crest Cells. J Endod 2015; 41:1091-9. [PMID: 25882137 DOI: 10.1016/j.joen.2015.03.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 02/14/2015] [Accepted: 03/02/2015] [Indexed: 12/24/2022]
Abstract
INTRODUCTION During tooth development, cells originating from the neural crest serve as precursors to the cells in the dental follicle and dental papilla. Therefore, the current study aimed to understand the associations of cranial neural crest cells (CNCCs), dental follicle cells (DFCs), and dental papilla cells (DPCs) by performing a parallel comparison to evaluate their odontogenic differentiation capacities. METHODS In this study, we harvested the 3 cells from C57/green fluorescent protein-positive mice or embryos and compared the cell morphology, surface antigens, microstructures, and gene and protein expression. Under the odontogenic microenvironments provided by treated dentin matrix, the odontogenic differentiations of the 3 cells were further compared in vitro and in vivo. RESULTS The gene levels of DFCs in neurofilament, tubulin, and nestin were close to the DPCs, and in alkaline phosphatase, osteopontin, dentin matrix protein 1, and dentin sialophosphoprotein were the lowest in the 3 cells. However, Western blot results showed that DFCs possessed more similar protein profiles to CNCCs than DPCs, including collagen 1, transforming growth factor beta 1, osteopontin, neurofilament, and dentin matrix protein 1. Meanwhile, DFCs as 1 source of dental stem cells possessed high potency in odontogenic differentiation in vitro. Moreover, similar dentinlike tissues were observed in all 3 groups in vivo. CONCLUSIONS CNCCs, DFCs, and DPCs possessed different biological characteristics in odontogenic differentiation.
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Affiliation(s)
- Gang Chen
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China; National Engineering Laboratory for Oral Regenerative Medicine, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China; Department of Oral and Maxillofacial Surgery, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Qince Sun
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China; National Engineering Laboratory for Oral Regenerative Medicine, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Li Xie
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China; National Engineering Laboratory for Oral Regenerative Medicine, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Zongting Jiang
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China; National Engineering Laboratory for Oral Regenerative Medicine, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China; Department of Oral and Maxillofacial Surgery, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Lian Feng
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China; National Engineering Laboratory for Oral Regenerative Medicine, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China; Department of Oral and Maxillofacial Surgery, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Mei Yu
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China; National Engineering Laboratory for Oral Regenerative Medicine, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Weihua Guo
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China; National Engineering Laboratory for Oral Regenerative Medicine, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China; Department of Pedodontics, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China.
| | - Weidong Tian
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China; National Engineering Laboratory for Oral Regenerative Medicine, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China; Department of Oral and Maxillofacial Surgery, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China.
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14
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Abstract
BACKGROUND AND OBJECTIVES The objective of this study was to elucidate the effects of different growth factors on the migration of dental follicle cells (DFCs). DFCs are ectomesenchymally derived easily accessible multipotent stem cells. Cell migration is a crucial step in many biological processes but also for tissue engineering. Growth factors such as epidermal growth factor (EGF), bone morphogenetic protein-2 (BMP2) or transforming growth factor β1 (TGF-β1) can be used to modify the behavior of cells. MATERIAL AND METHODS We used different migration assays (gel spot assay, scratch assay, transwell assay) to evaluate the influence of EGF, BMP2 and TGF-β1 on the migration of DFCs. We investigated the expression of migration-related genes after growth factor stimulation using the PCR array human cell motility. RESULTS DFCs treated with BMP2 or TGF-β1 migrated faster than DFCs treated with EGF. Additionally, more migration-related genes are regulated after treatment with BMP2 or TGF-β1 than with EGF. TGF-β1 additionally functions as a chemoattractant for DFCs. Osteogenic differentiation markers were regulated after BMP2 treatment only. CONCLUSION Whereas the strong migration induced by BMP2 was accompanied by beginning osteogenic differentiation the strong migration induced by TGF-β1 was directional. EGF exhibited not only the weakest migration stimulation but also the weakest induction of differentiation into mineralizing cells.
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Affiliation(s)
- O Felthaus
- Department of Cranio- and Maxillofacial Surgery, University of Regensburg, Regensburg, Germany
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15
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Zhang H, Tompkins K, Garrigues J, Snead ML, Gibson CW, Somerman MJ. Full length amelogenin binds to cell surface LAMP-1 on tooth root/periodontium associated cells. Arch Oral Biol 2010; 55:417-25. [PMID: 20382373 PMCID: PMC2886511 DOI: 10.1016/j.archoralbio.2010.03.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2009] [Revised: 12/30/2009] [Accepted: 03/12/2010] [Indexed: 12/13/2022]
Abstract
OBJECTIVES Lysosome-associated membrane protein-1 (LAMP-1) has been suggested to be a cell surface receptor for a specific amelogenin isoform, leucine-rich amelogenin peptide or LRAP. However, it is unclear if LAMP-1 is an amelogenin receptor for dental mesenchymal cells. The goal of this study was to determine if LAMP-1 serves as a cell surface binding site for full length amelogenin on tooth root/periodontium associated mesenchymal cells. DESIGN Murine dental follicle cells and cementoblasts (OCCM-30) were cultured for 2 days followed by addition of full length recombinant mouse amelogenin, rp(H)M180. Dose-response (0-100 microg/ml) and time course (0-120 min) assays were performed to determine the optimal conditions for live cell surface binding using immunofluorescent microscopy. A competitive binding assay was performed to determine binding specificity by adding Emdogain (1 mg/ml) to the media. An antibody against LAMP-1 was used to detect the location of LAMP-1 on the cell surface and the pattern was compared to cell surface bound amelogenin. Both amelogenin and cell surface LAMP-1 were immuno-co-localized to compare the amount and distribution pattern. RESULTS Maximum surface binding was achieved with 50 microg/ml of rp(H)M180 for 120 min. This binding was specific as demonstrated by competitive inhibition (79% lower) with the addition of Emdogain. The binding pattern for rp(H)M180 was similar to the distribution of surface LAMP-1 on dental follicle cells and cementoblasts. The high co-localization coefficient (0.92) for rp(H)M180 and LAMP-1 supports rp(H)M180 binding to cell surface LAMP-1. CONCLUSIONS The data from this study suggest that LAMP-1 can serve as a cell surface binding site for amelogenin on dental follicle cells and cementoblasts.
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Affiliation(s)
- Hai Zhang
- Department of Restorative Dentistry, School of Dentistry, University of Washington, Seattle, WA 98195, USA.
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16
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Abstract
Electroporation is a simple and versatile approach for DNA transfer but needs to be optimized for specific cells. We conducted square wave electroporation experiments for rat dental follicle cells under various conditions. These experiments indicated that the optimal electroporation electric field strength was 375 V/cm, and that plasmid concentrations greater than 0.18 microg/microL were required to achieve high transfection efficiency. BSA or fetal bovine serum in the pulsing buffer significantly improved cell survival and increased the number of transfected cells. The optimal pulsing duration was in the range of 45-120 ms at 375 V/cm. This electroporation protocol can be used to deliver DNA into dental follicle cells to study the roles of candidate genes in regulating tooth eruption. This is the first report showing the transfection of dental follicle cells using electroporation. The parameters determined in this study are likely to be applied to transfection of other fibroblast cells.
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Affiliation(s)
- Shaomian Yao
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - Samir Rana
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - Dawen Liu
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - Gary E. Wise
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana 70803, USA
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