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The effect of BMP4, FGF8 and WNT3a on mouse iPS cells differentiating to odontoblast-like cells. Med Mol Morphol 2022; 55:199-209. [PMID: 35578118 DOI: 10.1007/s00795-022-00318-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 03/23/2022] [Indexed: 10/18/2022]
Abstract
We investigated whether BMP4, FGF8, and/or WNT3a on neural crest-like cells (NCLC) derived from mouse induced pluripotent stem (miPS) cells will promote differentiation of odontoblasts-like cells. After the miPS cells matured into embryonic body (EB) cells, they were cultured in a neural induction medium to produce NCLC. As the differentiation of NCLC were confirmed by RT-qPCR, they were then disassociated and cultured with a medium containing, BMP4, FGF8, and/or WNT3a for 7 and 14 days. The effect of these stimuli on NCLC were assessed by RT-qPCR, ALP staining, and immunocytochemistry. The cultured EB cells presented a significant increase of Snai1, Slug, and Sox 10 substantiating the differentiation of NCLC. NCLC stimulated with more than two stimuli significantly increased the odontoblast markers Dmp-1, Dspp, Nestin, Alp, and Runx2 expression compared to control with no stimulus. The expression of Dmp-1 and Dspp upregulated more when FGF8 was combined with WNT3a. ALP staining was positive in groups containing BMP4 and fluorescence was observed in immunocytochemistry of the common significant groups between Dmp-1 and Dspp. After stimulation, the cell morphology demonstrated a spindle-shaped cells with long projections resembling odontoblasts. Simultaneous BMP4, FGF8, and WNT3a stimuli significantly differentiated NCLC into odontoblast-like cells.
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2
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Ye Y, Jiang Z, Pan Y, Yang G, Wang Y. Role and mechanism of BMP4 in bone, craniofacial, and tooth development. Arch Oral Biol 2022; 140:105465. [DOI: 10.1016/j.archoralbio.2022.105465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/16/2022] [Accepted: 05/17/2022] [Indexed: 11/02/2022]
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Song J, Jiang N, Gan X, Zhi W, Zhu Z. Thrombin inhibitor argatroban modulates bone marrow stromal cells behaviors and promotes osteogenesis through canonical Wnt signaling. Life Sci 2021; 269:119073. [PMID: 33460666 DOI: 10.1016/j.lfs.2021.119073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 12/30/2020] [Accepted: 01/09/2021] [Indexed: 02/05/2023]
Abstract
AIMS Coagulation is a common event that play a double-edged role in physiological and pathological process. Anti-coagulation methods were applied in joint surgery or scaffolds implantation to encourage new vascular formation and avoid coagulation block. However, whether anti-coagulation drug perform regulatory roles in bone structure is unknown. This study aims to explore a direct thrombin inhibitor, argatroban, effects on bone marrow stromal cells (BMSCs) and decipher the underlying mechanisms. MATERIALS AND METHODS Argatroban effects on BMSCs were investigated in vivo and in vitro. The drug was applied in periodontal disease model mice and bone loss was evaluated by μCT and histology. BMSCs were treated with different doses argatroban or vehicle. Cellular reactions were analyzed using wound healing assay, qRT-PCR, Alizarin Red S staining and western blotting. KEY FINDINGS We demonstrated that local injection of argatroban can rescue bone loss in periodontal disease in vivo. To explore the underlying mechanism, we examined that cell proliferation and differentiation capability. Proliferation and migration of BMSCs were both inhibited by applying lower dose of argatroban. Interestingly, without affecting osteoclastogenesis, osteogenic differentiation was significantly induced by argatroban, which were shown by extracellular mineralization and upregulation of early osteoblastic differentiation markers, alkaline phosphatase, Osteocalcin, transcription factors RUNX2 and Osterix. In addition, molecular analysis revealed that argatroban promoted β-catenin nuclear translocation and led to an increase of osteogenesis through activating canonical Wnt signaling. SIGNIFICANCE Taken together, our results show the novel application of the anti-coagulation compound argatroban in the commitment of BMSCs-based alveolar bone regeneration and remodeling.
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Affiliation(s)
- Jian Song
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No.14, 3rd Section of Renmin Nan Road. Chengdu, Sichuan 610041, China
| | - Nan Jiang
- Central Laboratory, Peking University School and Hospital of Stomatology, #22 Zhongguancun South Avenue, Haidian District, Beijing 100081, China
| | - Xueqi Gan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No.14, 3rd Section of Renmin Nan Road. Chengdu, Sichuan 610041, China
| | - Wei Zhi
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, 111, No.1 North Erhuan Road, Chengdu, Sichuan 610031, China
| | - Zhuoli Zhu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No.14, 3rd Section of Renmin Nan Road. Chengdu, Sichuan 610041, China.
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4
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Qiu X, Liu J, Zheng C, Su Y, Bao L, Zhu B, Liu S, Wang L, Wang X, Wang Y, Zhao W, Zhou J, Deng Z, Liu S, Jin Y. Exosomes released from educated mesenchymal stem cells accelerate cutaneous wound healing via promoting angiogenesis. Cell Prolif 2020; 53:e12830. [PMID: 32608556 PMCID: PMC7445410 DOI: 10.1111/cpr.12830] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 04/25/2020] [Accepted: 04/28/2020] [Indexed: 12/13/2022] Open
Abstract
Objectives Skin serves as the major interface between the external environment and body which is liable to many kinds of injuries. Mesenchymal stem cell (MSC) therapy has been widely used and became a promising strategy. Pre‐treatment with chemical agents, hypoxia or gene modifications can partially protect MSCs against injury, and the pre‐treated MSCs show the improved differentiation, homing capacity, survival and paracrine effects regard to attenuating injury. The aim of this study was to investigate whether the exosomes from the educated MSCs contribute to accelerate wound healing process. Materials and methods We extracted the exosomes from the two educated MSCs and utilized them in the cutaneous wound healing model. The pro‐angiogenetic effect of exosomes on endothelial cells was also investigated. Results We firstly found that MSCs pre‐treated by exosomes from neonatal serum significantly improved their biological functions and the effect of therapy. Moreover, we extracted the exosomes from the educated MSCs and utilized them to treat the cutaneous wound model directly. We found that the released exosomes from MSCs which educated by neonatal serum before had the more outstanding performance in therapeutic effect. Mechanistically, we revealed that the recipient endothelial cells (ECs) were targeted and the exosomes promoted their functions to enhance angiogenesis via regulating AKT/eNOS pathway. Conclusions Our findings unravelled the positive effect of the upgraded exosomes from the educated MSCs as a promising cell‐free therapeutic strategy for cutaneous wound healing.
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Affiliation(s)
- Xinyu Qiu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Jin Liu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China.,State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Chenxi Zheng
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China.,Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
| | - Yuting Su
- Department of Aerospace, The Fourth Military Medical University, Xi'an, China
| | - Lili Bao
- Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
| | - Bin Zhu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China.,Department of Stomatology, The General Hospital of Tibet Military Region, Lhasa, China
| | - Siying Liu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Lulu Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Xiao Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Department of Operative Dentistry and Endodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Yirong Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Department of Operative Dentistry and Endodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Wanmin Zhao
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China.,Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
| | - Jun Zhou
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Zhihong Deng
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Shiyu Liu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Yan Jin
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China
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LGR5 + epithelial tumor stem-like cells generate a 3D-organoid model for ameloblastoma. Cell Death Dis 2020; 11:338. [PMID: 32382005 PMCID: PMC7206107 DOI: 10.1038/s41419-020-2560-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 01/31/2020] [Accepted: 02/03/2020] [Indexed: 01/01/2023]
Abstract
Ameloblastoma (AM) is a benign but locally aggressive tumor with high recurrences. Currently, underlying pathophysiology remains elusive, and radical surgery remains the most definitive treatment with severe morbidities. We have recently reported that AM harbors a subpopulation of tumor epithelial stem-like cells (AM-EpiSCs). Herein, we explored whether LGR5+ epithelial cells in AM possess stem-like cell properties and their potential contribution to pathogenesis and recurrence of AM. We found that LGR5 and stem cell-related genes were co-expressed in a subpopulation of AM epithelial cells both in vivo and in vitro, which were enriched under 3D-spheroid culture. As compared to LGR5− counterparts, LGR5+ AM epithelial cells showed increased expression of various EMT- and stemness-related genes, and functionally, exhibited increased capacity to form 3D-spheroids and generate human tumor 3D organoids, which recapitulated the histopathologic features of distinct subtypes of solid AM, thus, contributing a useful human tumor platform for targeted therapeutic screening. Treatment with a selective BRAFV600E inhibitor, vemurafenib, unexpectedly enriched the subpopulation of LGR5+ AM-EpiSCs in tumor 3D organoids, which may have explained therapeutic resistances and recurrences. These findings suggest that LGR5+ AM-EpiSCs play a pivotal role in pathogenesis and progression of AM and targeted inhibition of both BRAF and LGR5 potentially serves a novel nonsurgical adjuvant therapeutic approach for this aggressively benign jaw tumor.
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Zhang D, Xu X, Long X, Cheng K, Li J. Advances in biomolecule inspired polymeric material decorated interfaces for biological applications. Biomater Sci 2020; 7:3984-3999. [PMID: 31429424 DOI: 10.1039/c9bm00746f] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
With the development of surface modification technology, interface properties have great effects on the interaction between biomedical materials and cells and biomolecules, which significantly affects the biocompatibility and functionality of materials. As an orderly and perfect system, biological organisms in nature effectively integrate all kinds of bio-interfaces with physiological functions, which shed light on the importance of biomolecules in organisms. It gives birth to a bio-inspiration strategy to design and fabricate smart materials with specific functionalities, e.g. osteogenic and chondrocytic induced materials inspired by bone sialoprotein and chondroitin sulfate. Through this mimicking approach, various functional materials were utilized to decorate the interfaces and further optimize the performance of biomedical materials, which would widely expand their applications. In this review, followed by a summary and brief introduction of surface modification methods, we highlight recent advances in the fabrication of functional polymeric materials inspired by a range of biomolecules for decorating interfaces. Then, the other applications of biomolecule inspired materials including tissue engineering, diagnosis and treatment of diseases and physiological function regulation are presented and the future outlook is discussed as well.
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Affiliation(s)
- Dongyue Zhang
- College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China.
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7
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Liu J, Zhao Z, Ruan J, Weir MD, Ma T, Ren K, Schneider A, Oates TW, Li A, Zhao L, Xu HHK. Stem cells in the periodontal ligament differentiated into osteogenic, fibrogenic and cementogenic lineages for the regeneration of the periodontal complex. J Dent 2019; 92:103259. [PMID: 31809792 DOI: 10.1016/j.jdent.2019.103259] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 11/22/2019] [Accepted: 12/02/2019] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE Human periodontal ligament stem cells (hPDLSCs) are promising for periodontal regeneration. However, to date, there has been no report of hPDLSC differentiation into the fibrogenic lineage. There has been no report demonstrating hPDLSC differentiation into all three (osteogenic, fibrogenic and cementogenic fibrogenic) lineages in the same report. The objectives of this study were to harvest hPDLSCs from the periodontal ligaments (PDL) of the extracted human teeth, and use the same vial of hPDLSCs to differentiate into all three (osteogenic, fibrogenic and cementogenic) lineages for the first time. METHODS hPDLSCs were harvested from PDL tissues of the extracted premolars. The ability of hPDLSCs to form bone, cementum and collagen fibers was tested in culture mediums. Gene expressions were analyzed using quantitative real-time polymerase chain reaction (qRT-PCR). Immunofluorescence, alizarin red (ARS), Xylenol orange, picro sirius red staining (PSRS), alcian blue staining (ABS) and alkaline phosphatase (ALP) staining were evaluated. RESULTS In osteogenic medium, hPDLSCs had high expressions of osteogenic genes (RUNX2, ALP, OPN and COL1) at 14 and 21 days (15-20 folds of that of control), and produced mineral nodules and ALP activity (5 and 10 folds those of the control). hPDLSCs in fibrogenic medium expressed high levels of PDL fibrogenic genes (COL1, COL3, FSP-1, PLAP-1 and Elastin) at 28 days (20-70 folds of control). They were stained strongly with F-actin and fibronection, and secreted PDL collagen fibers (5 folds of control). hPDLSCs in cementogenic medium showed high expressions of cementum genes (CAP, CEMP1 and BSP) at 21 days (10-15 folds of control) and synthesized mineralized cementum (50 folds via ABS, and 40 folds via ALP staining, compared to those of control). CONCLUSIONS hPDLSCs differentiated into bone-, fiber- and cementum-forming cells, with potential for regeneration of periodontium to form the bone-PDL-cementum complex.
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Affiliation(s)
- Jin Liu
- Key Laboratory of Shannxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shannxi, 710004, China; Clinical Research Center of Shannxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shannxi, 710004, China; Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD, 21201, USA
| | - Zeqing Zhao
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD, 21201, USA; Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, China
| | - Jianping Ruan
- Key Laboratory of Shannxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shannxi, 710004, China; Clinical Research Center of Shannxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shannxi, 710004, China
| | - Michael D Weir
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD, 21201, USA
| | - Tao Ma
- Department of Oncology and Diagnostic Sciences, University of Maryland School of Dentistry, Baltimore, USA
| | - Ke Ren
- Department of Neural and Pain Sciences, School of Dentistry, & Program in Neuroscience, University of Maryland, Baltimore, MD, 21201, USA
| | - Abraham Schneider
- Department of Oncology and Diagnostic Sciences, University of Maryland School of Dentistry, Baltimore, USA; Member, Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Thomas W Oates
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD, 21201, USA
| | - Ang Li
- Key Laboratory of Shannxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shannxi, 710004, China; Clinical Research Center of Shannxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shannxi, 710004, China.
| | - Liang Zhao
- Department of Orthopedic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China.
| | - Hockin H K Xu
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD, 21201, USA; Member, Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD, 21201, USA; Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD, 21201, USA.
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Tawfik Tadros MS, El-Baz MAES, Khairy MAEK. Dental stem cells in tooth repair: A systematic review. F1000Res 2019; 8:1955. [DOI: 10.12688/f1000research.21058.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/01/2023] Open
Abstract
Background: Dental stem cells (DSCs) are self-renewable teeth cells, which help maintain or develop oral tissues. These cells can differentiate into odontoblasts, adipocytes, cementoblast-like cells, osteoblasts, or chondroblasts and form dentin/pulp. This systematic review aimed to summarize the current evidence regarding the role of these cells in dental pulp regeneration. Methods: We searched the following databases: PubMed, Cochrane Library, MEDLINE, SCOPUS, ScienceDirect, and Web of Science using relevant keywords. Case reports and non-English studies were excluded. We included all studies using dental stem cells in tooth repair whether in vivo or in vitro studies. Results: Dental pulp stem cell (DPSCs) is the most common type of cell. Most stem cells are incorporated and implanted into the root canals in different scaffold forms. Some experiments combine growth factors such as TDM, BMP, and G-CSF with stem cells to improve the results. The transplant of DPSCs and stem cells from apical papilla (SCAPs) was found to be associated with pulp-like recovery, efficient revascularization, enhanced chondrogenesis, and direct vascular supply of regenerated tissue. Conclusion: The current evidence suggests that DPSCs, stem cells from human exfoliated deciduous teeth, and SCAPs are capable of providing sufficient pulp regeneration and vascularization. For the development of the dental repair field, it is important to screen for more effective stem cells, dentine releasing therapies, good biomimicry scaffolds, and good histological markers.
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He L, Zhou J, Chen M, Lin CS, Kim SG, Zhou Y, Xiang L, Xie M, Bai H, Yao H, Shi C, Coelho PG, Bromage TG, Hu B, Tovar N, Witek L, Wu J, Chen K, Gu W, Zheng J, Sheu TJ, Zhong J, Wen J, Niu Y, Cheng B, Gong Q, Owens DM, Stanislauskas M, Pei J, Chotkowski G, Wang S, Yang G, Zegarelli DJ, Shi X, Finkel M, Zhang W, Li J, Cheng J, Tarnow DP, Zhou X, Wang Z, Jiang X, Romanov A, Rowe DW, Wang S, Ye L, Ling J, Mao J. Parenchymal and stromal tissue regeneration of tooth organ by pivotal signals reinstated in decellularized matrix. NATURE MATERIALS 2019; 18:627-637. [PMID: 31114073 DOI: 10.1038/s41563-019-0368-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 04/09/2019] [Indexed: 02/05/2023]
Abstract
Cells are transplanted to regenerate an organs' parenchyma, but how transplanted parenchymal cells induce stromal regeneration is elusive. Despite the common use of a decellularized matrix, little is known as to the pivotal signals that must be restored for tissue or organ regeneration. We report that Alx3, a developmentally important gene, orchestrated adult parenchymal and stromal regeneration by directly transactivating Wnt3a and vascular endothelial growth factor. In contrast to the modest parenchyma formed by native adult progenitors, Alx3-restored cells in decellularized scaffolds not only produced vascularized stroma that involved vascular endothelial growth factor signalling, but also parenchymal dentin via the Wnt/β-catenin pathway. In an orthotopic large-animal model following parenchyma and stroma ablation, Wnt3a-recruited endogenous cells regenerated neurovascular stroma and differentiated into parenchymal odontoblast-like cells that extended the processes into newly formed dentin with a structure-mechanical equivalency to native dentin. Thus, the Alx3-Wnt3a axis enables postnatal progenitors with a modest innate regenerative capacity to regenerate adult tissues. Depleted signals in the decellularized matrix may be reinstated by a developmentally pivotal gene or corresponding protein.
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Affiliation(s)
- Ling He
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatology Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Jian Zhou
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - Mo Chen
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA
| | - Chyuan-Sheng Lin
- Department of Pathology and Cell Biology, Columbia University, New York, NY, USA
| | - Sahng G Kim
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Columbia University College of Dental Medicine, New York, NY, USA
| | - Yue Zhou
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Department of Conservative Dentistry, Laboratory of Biomedical Science and Translational Medicine, School of Stomatology, Tongji University, Shanghai, China
| | - Lusai Xiang
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatology Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Ming Xie
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Department of Prosthodontics, Shanghai Jiao Tong University, Shanghai, China
| | - Hanying Bai
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA
| | - Hai Yao
- Department of Bioengineering, Clemson University, Charleston, SC, USA
| | - Changcheng Shi
- Department of Bioengineering, Clemson University, Charleston, SC, USA
| | - Paulo G Coelho
- Department of Biomaterials and Biomimetics, New York University, New York, NY, USA
| | - Timothy G Bromage
- Department of Biomaterials and Biomimetics, New York University, New York, NY, USA
| | - Bin Hu
- Department of Biomaterials and Biomimetics, New York University, New York, NY, USA
| | - Nick Tovar
- Department of Biomaterials and Biomimetics, New York University, New York, NY, USA
| | - Lukasz Witek
- Department of Biomaterials and Biomimetics, New York University, New York, NY, USA
| | - Jiaqian Wu
- Vivian L. Smith Department of Neurosurgery, Center for Stem Cell and Regenerative Medicine University of Texas McGovern Medical School at Houston, Houston, TX, USA
| | - Kenian Chen
- Vivian L. Smith Department of Neurosurgery, Center for Stem Cell and Regenerative Medicine University of Texas McGovern Medical School at Houston, Houston, TX, USA
| | - Wei Gu
- Department of Pathology and Cell Biology, Columbia University, New York, NY, USA
| | - Jinxuan Zheng
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatology Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Tzong-Jen Sheu
- University of Rochester Medical Center, School of Medicine and Dentistry, Rochester, NY, USA
| | - Juan Zhong
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatology Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Jin Wen
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Department of Prosthodontics, Shanghai Jiao Tong University, Shanghai, China
| | - Yuting Niu
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA
| | - Bin Cheng
- Columbia University Mailman School of Public Health, Department of Biostatistics, New York, NY, USA
| | - Qimei Gong
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatology Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - David M Owens
- Department of Pathology and Cell Biology, Columbia University, New York, NY, USA.,Department of Dermatology, Columbia University, New York, NY, USA
| | | | - Jasmine Pei
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA
| | | | - Sainan Wang
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA
| | - Guodong Yang
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA
| | | | - Xin Shi
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA
| | | | - Wen Zhang
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatology Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Junyuan Li
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA
| | - Jiayi Cheng
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA
| | - Dennis P Tarnow
- Columbia University College of Dental Medicine, New York, NY, USA
| | - Xuedong Zhou
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, West China School of Stomatology, Sichuan University, Chengdu, China
| | - Zuolin Wang
- Department of Conservative Dentistry, Laboratory of Biomedical Science and Translational Medicine, School of Stomatology, Tongji University, Shanghai, China
| | - Xinquan Jiang
- Department of Prosthodontics, Shanghai Jiao Tong University, Shanghai, China
| | - Alexander Romanov
- Institute of Comparative Medicine, Columbia University Medical Center, New York, NY, USA
| | - David W Rowe
- Center for Regenerative Medicine and Skeletal Development, University of Connecticut Health Science Center, Farmington, CT, USA
| | - Songlin Wang
- Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - Ling Ye
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, West China School of Stomatology, Sichuan University, Chengdu, China
| | - Junqi Ling
- Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatology Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China.
| | - Jeremy Mao
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA. .,Department of Pathology and Cell Biology, Columbia University, New York, NY, USA. .,Columbia University College of Dental Medicine, New York, NY, USA. .,Department of Orthopedic Surgery, Columbia University Physician and Surgeons, New York, NY, USA. .,Department of Biomedical Engineering, Columbia University, New York, NY, USA.
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10
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The role of stem cell therapy in regeneration of dentine-pulp complex: a systematic review. Prog Biomater 2018; 7:249-268. [PMID: 30267369 PMCID: PMC6304177 DOI: 10.1007/s40204-018-0100-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Accepted: 09/12/2018] [Indexed: 12/16/2022] Open
Abstract
Infection of the dental pulp will result in inflammation and eventually tissue necrosis which is treated conventionally by pulpectomy and root canal treatment. Advances in regenerative medicine and tissue engineering along with the introduction of new sources of stem cells have led to the possibility of pulp tissue regeneration. This systematic review analyzes animal studies published since 2010 to determine the ability of stem cell therapy to regenerate the dentine-pulp complex (DPC) and the success of clinical protocols. In vitro and human clinical studies are excluded and only the experimental studies on animal models were included. Dental pulp stem cells constitute the most commonly used cell type. The majority of stem cells are incorporated into various types of scaffold and implanted into root canals. Some of the studies combine growth factors with stem cells in an attempt to improve the outcome. Studies of ectopic transplantation using small animal models are simple and non-systematic evaluation techniques. Stem cell concentrations have not been so far reported; therefore, the translational value of such animal studies remains questionable. Though all types of stem cells appear capable of regenerating a dentine-pulp complex, still several factors have been considered in selecting the cell type. Co-administrative factors are essential for inducing the systemic migration of stem cells, and their vascularization and differentiation into odontoblast-like cells. Scaffolds provide a biodegradable structure able to control the release of growth factors. To identify problems and reduce costs, novel strategies should be initially tested in subcutaneous or renal capsule implantation followed by root canal models to confirm results.
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11
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Rahman SU, Oh JH, Cho YD, Chung SH, Lee G, Baek JH, Ryoo HM, Woo KM. Fibrous Topography-Potentiated Canonical Wnt Signaling Directs the Odontoblastic Differentiation of Dental Pulp-Derived Stem Cells. ACS APPLIED MATERIALS & INTERFACES 2018; 10:17526-17541. [PMID: 29741358 DOI: 10.1021/acsami.7b19782] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nanofibrous engineered matrices have significant potential in cellular differentiation and tissue regeneration. Stem cells require specific extracellular signals that lead to the induction of different lineages. However, the mechanisms by which the nanofibrous matrix promotes mesenchymal stem cell (MSC) differentiation are largely unknown. Here, we investigated the mechanisms that underlie nanofibrous matrix-induced odontoblastic differentiation of human dental pulp MSCs (DP-MSCs). An electrospun polystyrene nanofibrous (PSF) matrix was prepared, and the cell responses to the PSF matrix were assessed in comparison with those on conventional tissue culture dishes. The PSF matrix promoted the expression of Wnt3a, Wnt5a, Wnt10a, BMP2, BMP4, and BMP7 in the DP-MSCs, concomitant with the induction of odontoblast/osteoblast differentiation markers, dentin sialophosphoprotein (DSPP), osteocalcin, and bone sialoprotein, whose levels were further enhanced by treatment with recombinant Wnt3a. The DP-MSCs cultured on the PSF matrix also exhibited a high alkaline phosphatase activity and intense Alizarin Red staining, indicating that the PSF matrix promotes odontoblast differentiation. Besides inducing the expression of Wnt3a, the PSF matrix maintained high levels of β-catenin protein and enhanced its translocation to the nucleus, leading to its transcriptional activity. Forced expression of LEF1 or treatments with LiCl further enhanced the DSPP expression. Blocking the Wnt3a-initiated signaling abrogated the PSF-induced DSPP expression. Furthermore, the cells on the PSF matrix increased the DSPP promoter activity. The β-catenin complex was bound to the conserved motifs on the DSPP promoter dictating its transcription. Transplantations of the preodontoblast-seeded PSF matrix to the subcutaneous tissues of nude mice confirmed the association of the PSF matrix with the Wnt3a and DSPP expressions in vivo. Taken together, these results demonstrate the nanofibrous engineered matrix strongly supports odontoblastic differentiation of DP-MSCs by enhancing Wnt/β-catenin signaling.
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Diniz IMA, Carreira ACO, Sipert CR, Uehara CM, Moreira MSN, Freire L, Pelissari C, Kossugue PM, de Araújo DR, Sogayar MC, Marques MM. Photobiomodulation of mesenchymal stem cells encapsulated in an injectable rhBMP4-loaded hydrogel directs hard tissue bioengineering. J Cell Physiol 2018; 233:4907-4918. [DOI: 10.1002/jcp.26309] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 12/01/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Ivana M. A. Diniz
- Department of Restorative Dentistry; School of Dentistry; Universidade Federal de Minas Gerais; Belo Horizonte Brazil
| | - Ana C. O. Carreira
- Cell and Molecular Therapy Center (NUCEL/NETCEM); School of Medicine; University of São Paulo; São Paulo Brazil
- Department of Biochemistry; Chemistry Institute; University of São Paulo; São Paulo Brazil
| | - Carla R. Sipert
- Department of Restorative Dentistry; School of Dentistry; Universidade de São Paulo; São Paulo Brazil
| | - Cindi M. Uehara
- Department of Restorative Dentistry; School of Dentistry; Universidade de São Paulo; São Paulo Brazil
| | - Maria S. N. Moreira
- Department of Biodentistry; School of Dentistry; Ibirapuera University; São Paulo Brazil
| | - Laila Freire
- Department of Restorative Dentistry; School of Dentistry; Universidade de São Paulo; São Paulo Brazil
| | - Cibele Pelissari
- Department of Stomatology; School of Dentistry; Universidade de São Paulo; São Paulo Brazil
| | - Patrícia M. Kossugue
- Cell and Molecular Therapy Center (NUCEL/NETCEM); School of Medicine; University of São Paulo; São Paulo Brazil
- Department of Biochemistry; Chemistry Institute; University of São Paulo; São Paulo Brazil
| | | | - Mari C. Sogayar
- Cell and Molecular Therapy Center (NUCEL/NETCEM); School of Medicine; University of São Paulo; São Paulo Brazil
- Department of Biochemistry; Chemistry Institute; University of São Paulo; São Paulo Brazil
| | - Márcia M. Marques
- Department of Restorative Dentistry; School of Dentistry; Universidade de São Paulo; São Paulo Brazil
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13
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DNA methylation profile is associated with the osteogenic potential of three distinct human odontogenic stem cells. Signal Transduct Target Ther 2018. [PMID: 29527327 PMCID: PMC5837092 DOI: 10.1038/s41392-017-0001-6] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Among the various sources of human autologous stem cells, stem cells isolated from dental tissues exhibit excellent properties in tissue engineering and regenerative medicine. However, the distinct potential of these odontogenic cell lines remains unclear. In this study, we analyzed DNA methylation patterns to determine whether specific differences existed among three different odontogenic cell types. Using the HumanMethylation450 Beadchip, the whole genomes of human dental pulp stem cells (DPSCs), periodontal ligament stem cells (PDLSCs), and dental follicle progenitor cells (DFPCs) were compared. Then, the osteogenic potential of these cells was evaluated both in vitro and in vivo, and the methylation levels of certain genes related to bone formation differed among the three cell lines. P values less than 0.05 were considered to indicate statistical significance. The three cell types showed highly similar DNA methylation patterns, although specific differences were identified. Gene ontology analysis revealed that one of the most significantly different gene categories was related to bone formation. Thus, expression of cell surface epitopes and osteogenic-related transcription factors as well as the bone formation capacity were compared. The results showed that compared with DFPCs and DPSCs, PDLSCs had higher transcription levels of osteogenic-related factors, a higher in vitro osteogenic potential, and an increased new bone formation capacity in vivo. In conclusion, the results of this study suggested that the differential DNA methylation profiles could be related to the osteogenic potential of these human odontogenic cell populations. Additionally, the increased osteogenic potential of PDLSCs might aid researchers or clinicians in making better choices regarding tissue regeneration and clinical therapies.
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Hair Germ Model In Vitro via Human Postnatal Keratinocyte-Dermal Papilla Interactions: Impact of Hyaluronic Acid. Stem Cells Int 2017; 2017:9271869. [PMID: 29129979 PMCID: PMC5654293 DOI: 10.1155/2017/9271869] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 06/27/2017] [Accepted: 07/19/2017] [Indexed: 02/01/2023] Open
Abstract
Hair follicle (HF) reconstruction in vitro is a promising field in alopecia treatment and human HF development research. Here, we combined postnatal human dermal papilla (DP) cells and skin epidermal keratinocytes (KCs) in a hanging drop culture to develop an artificial HF germ. The method is based on DP cell hair-inducing properties and KC self-organization. We evaluated two protocols of aggregate assembling. Mixed HF germ-like structures demonstrated the initiation of epithelial-mesenchymal interaction, including WNT pathway activation and expression of follicular markers. We analyzed the influence of possible DP cell niche components including soluble factors and extracellular matrix (ECM) molecules in the process of the organoid assembling and growth. Our results demonstrated that soluble factors had little impact on HF germ generation and Ki67+ cell score inside the organoids although BMP6 and VD3 maintained effectively the DP identity in the monolayer culture. Aggrecan, biglycan, fibronectin, and hyaluronic acid (HA) significantly stimulated cell proliferation in DP cell monolayer culture without any effect on DP cell identity. Most of ECM compounds prevented the formation of cell aggregates while HA promoted the formation of larger organoids. In conclusion, our model could be suitable to study cell-cell and cell-niche interactions during HF reconstruction in vitro.
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15
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Jung JK, Gwon GJ, Neupane S, Sohn WJ, Kim KR, Kim JY, An SY, Kwon TY, An CH, Lee Y, Kim JY, Ha JH. Bortezomib Facilitates Reparative Dentin Formation after Pulp Access Cavity Preparation in Mouse Molar. J Endod 2017; 43:2041-2047. [PMID: 29032823 DOI: 10.1016/j.joen.2017.07.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 07/12/2017] [Accepted: 07/24/2017] [Indexed: 10/18/2022]
Abstract
INTRODUCTION The aim of this study was to evaluate in vitro and ex vivo roles of bortezomib, a proteasome inhibitor that binds to the active site of the 26S proteasome, in tertiary dentin formation. METHODS We established pulpal access cavity preparation that was treated with or without bortezomib before direct pulp capping with a calcium hydroxide-based material. We also analyzed bone morphogenetic protein (Bmp)- and Wnt-related signaling molecules using quantitative real-time polymerase chain reaction. RESULTS In the short-term observation period, the bortezomib-treated pulp specimens showed the period-altered immunolocalization patterns of nestin, CD31, and myeloperoxidase, whereas the control specimens did not. The bortezomib-treated group showed a complete dentin bridge with very few irregular tubules after 42 days. The micro-computed tomographic images showed more apparent dentin bridge structures in the treated specimens than were in the controls. Quantitative real-time polymerase chain reaction analysis showed up-regulated Bmp and Wnt. CONCLUSIONS These findings revealed that treatment with 1 μmol/L bortezomib induced reparative dentin formation that facilitated the maintenance of the integrity of the remaining pulpal tissue via early vascularization and regulation of Bmp and Wnt signaling.
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Affiliation(s)
- Jae-Kwang Jung
- Department of Oral Medicine, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Gi-Jeong Gwon
- Department of Biochemistry, School of Dentistry, Institute for Hard Tissue and Bone Regeneration, Kyungpook National University, Daegu, Korea
| | - Sanjiv Neupane
- Department of Biochemistry, School of Dentistry, Institute for Hard Tissue and Bone Regeneration, Kyungpook National University, Daegu, Korea
| | - Wern-Joo Sohn
- Department of Biochemistry, School of Dentistry, Institute for Hard Tissue and Bone Regeneration, Kyungpook National University, Daegu, Korea
| | - Ki-Rim Kim
- Department of Dental Hygiene, Kyungpook National University, Daegu, Korea
| | - Ji-Youn Kim
- Department of Dental Hygiene, Gachon University College of Health Science, Incheon, Seoul, Korea
| | - Seo-Young An
- Department of Oral and Maxillofacial Radiology, Kyungpook National University, Daegu, Korea
| | - Tae-Yub Kwon
- Department of Dental Materials, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Chang-Hyeon An
- Department of Oral and Maxillofacial Radiology, Kyungpook National University, Daegu, Korea
| | - Youngkyun Lee
- Department of Biochemistry, School of Dentistry, Institute for Hard Tissue and Bone Regeneration, Kyungpook National University, Daegu, Korea
| | - Jae-Young Kim
- Department of Biochemistry, School of Dentistry, Institute for Hard Tissue and Bone Regeneration, Kyungpook National University, Daegu, Korea.
| | - Jung-Hong Ha
- Department of Conservative Dentistry, School of Dentistry, Institute for Hard Tissue and Bone Regeneration, Kyungpook National University, Daegu, Korea.
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16
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Jiang N, Xiang L, He L, Yang G, Zheng J, Wang C, Zhang Y, Wang S, Zhou Y, Sheu TJ, Wu J, Chen K, Coelho PG, Tovar NM, Kim SH, Chen M, Zhou YH, Mao JJ. Exosomes Mediate Epithelium-Mesenchyme Crosstalk in Organ Development. ACS NANO 2017; 11:7736-7746. [PMID: 28727410 PMCID: PMC5634743 DOI: 10.1021/acsnano.7b01087] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Organ development requires complex signaling by cells in different tissues. Epithelium and mesenchyme interactions are crucial for the development of skin, hair follicles, kidney, lungs, prostate, major glands, and teeth. Despite myriad literature on cell-cell interactions and ligand-receptor binding, the roles of extracellular vesicles in epithelium-mesenchyme interactions during organogenesis are poorly understood. Here, we discovered that ∼100 nm exosomes were secreted by the epithelium and mesenchyme of a developing tooth organ and diffused through the basement membrane. Exosomes were entocytosed by epithelium or mesenchyme cells with preference by reciprocal cells rather than self-uptake. Exosomes reciprocally evoked cell differentiation and matrix synthesis: epithelium exosomes induce mesenchyme cells to produce dentin sialoprotein and undergo mineralization, whereas mesenchyme exosomes induce epithelium cells to produce basement membrane components, ameloblastin and amelogenenin. Attenuated exosomal secretion by Rab27a/b knockdown or GW4869 disrupted the basement membrane and reduced enamel and dentin production in organ culture and reduced matrix synthesis and the size of the cervical loop, which harbors epithelium stem cells, in Rab27aash/ash mutant mice. We then profiled exosomal constituents including miRNAs and peptides and further crossed all epithelium exosomal miRNAs with literature-known miRNA Wnt regulators. Epithelium exosome-derived miR135a activated Wnt/β-catenin signaling and escalated mesenchymal production of dentin matrix proteins, partially reversible by Antago-miR135a attenuation. Our results suggest that exosomes may mediate epithelium-mesenchyme crosstalk in organ development, suggesting that these vesicles and/or the molecular contents they are transporting may be interventional targets for treatment of diseases or regeneration of tissues.
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Affiliation(s)
- Nan Jiang
- Central Laboratory, Department of Orthodontics, Peking University School & Hospital of Stomatology, 22 Zhongguancun Nandajie, Beijing 100081, China
- Center for Craniofacial Regeneration, Columbia University, 630 W. 168 Street, New York, New York 10032, United States
| | - Lusai Xiang
- Center for Craniofacial Regeneration, Columbia University, 630 W. 168 Street, New York, New York 10032, United States
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
| | - Ling He
- Center for Craniofacial Regeneration, Columbia University, 630 W. 168 Street, New York, New York 10032, United States
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
| | - Guodong Yang
- Center for Craniofacial Regeneration, Columbia University, 630 W. 168 Street, New York, New York 10032, United States
| | - Jinxuan Zheng
- Center for Craniofacial Regeneration, Columbia University, 630 W. 168 Street, New York, New York 10032, United States
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
| | - Chenglin Wang
- Center for Craniofacial Regeneration, Columbia University, 630 W. 168 Street, New York, New York 10032, United States
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041, China
| | - Yimei Zhang
- Department of Orthodontics, Peking University School & Hospital of Stomatology, 22 Zhongguancun Nandajie, Beijing 100081, China
| | - Sainan Wang
- Center for Craniofacial Regeneration, Columbia University, 630 W. 168 Street, New York, New York 10032, United States
| | - Yue Zhou
- Center for Craniofacial Regeneration, Columbia University, 630 W. 168 Street, New York, New York 10032, United States
| | - Tzong-Jen Sheu
- Department of Orthopaedics, University of Rochester School of Medicine, Rochester, New York 14642, United States
| | - Jiaqian Wu
- The Vivian L. Smith Department of Neurosurgery, University of Texas, Houston, Texas 77054, United States
| | - Kenian Chen
- The Vivian L. Smith Department of Neurosurgery, University of Texas, Houston, Texas 77054, United States
| | - Paulo G. Coelho
- Department of Biomaterials and Biomimetics, New York University, New York, New York 10010, United States
| | - Nicky M. Tovar
- Department of Biomaterials and Biomimetics, New York University, New York, New York 10010, United States
| | - Shin Hye Kim
- Center for Craniofacial Regeneration, Columbia University, 630 W. 168 Street, New York, New York 10032, United States
| | - Mo Chen
- Center for Craniofacial Regeneration, Columbia University, 630 W. 168 Street, New York, New York 10032, United States
| | - Yan-Heng Zhou
- Department of Orthodontics, Peking University School & Hospital of Stomatology, 22 Zhongguancun Nandajie, Beijing 100081, China
| | - Jeremy J. Mao
- Center for Craniofacial Regeneration, Columbia University, 630 W. 168 Street, New York, New York 10032, United States
- Department of Biomedical Engineering, Columbia University, New York, New York 10027, United States
- Department of Orthopedic Surgery, Columbia University, New York, New York 10032, United States
- Department of Pathology and Cell Biology, Columbia University, New York, New York 10032, United States
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17
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Regenerative Endodontic Procedures: A Perspective from Stem Cell Niche Biology. J Endod 2017; 43:52-62. [DOI: 10.1016/j.joen.2016.09.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 08/19/2016] [Accepted: 09/09/2016] [Indexed: 12/14/2022]
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18
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Zhou J, Rogers JH, Lee SH, Sun D, Yao H, Mao JJ, Kong KY. Oral Mucosa Harbors a High Frequency of Endothelial Cells: A Novel Postnatal Cell Source for Angiogenic Regeneration. Stem Cells Dev 2016; 26:91-101. [PMID: 27832737 DOI: 10.1089/scd.2016.0175] [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] [Indexed: 01/24/2023] Open
Abstract
Endothelial progenitor cells/endothelial cells (EPCs/ECs) have great potential to treat pathological conditions such as cardiac infarction, muscle ischemia, and bone fractures, but isolation of EPC/ECs from existing cell sources is challenging due to their low EC frequency. We have isolated endothelial progenitor (EP)-like cells from rat oral mucosa and characterized their yield, immunophenotype, growth, and in vivo angiogenic potential. The frequency of EP-like cells derived from oral mucosa is thousands of folds higher than EPCs derived from donor-match bone marrow samples. EP-like cells from oral mucosa were positive for EC markers CD31, VE-Cadherin, and VEGFR2. Oral mucosa-derived EP-like cells displayed robust uptake of acetylated low-density lipoprotein and formed stable capillary networks in Matrigel. Subcutaneously implanted oral mucosa-derived EP-like cells anastomosed with host blood vessels, implicating their ability to elicit angiogenesis. Similar to endothelial colony-forming cells, EP-like cells from oral mucosa have a significantly higher proliferative rate than human umbilical vein endothelial cells. These findings identify a putative EPC source that is easily accessible in the oral cavity, potentially from discarded tissue specimens, and yet with robust yield and potency for angiogenesis in tissue and organ regeneration.
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Affiliation(s)
- Jian Zhou
- 1 Center for Craniofacial Regeneration, Columbia University Medical Center , New York, New York.,2 Department of General Dentistry, Capital Medical University School of Stomatology , Beijing, China
| | - Jason H Rogers
- 3 Department of Internal Medicine and the Cancer Research and Treatment Center, University of New Mexico Health Science Center , Albuquerque, New Mexico
| | - Scott H Lee
- 4 Pratt School of Engineering, Duke University , Durham, North Carolina
| | - DongMing Sun
- 5 W. M. Keck Center for Collaborative Neuroscience, Rutgers University , New Brunswick, New Jersey
| | - Hai Yao
- 6 Clemson-MUSC Bioengineering Program , Department of Craniofacial Biology, Charleston, South Carolina
| | - Jeremy J Mao
- 1 Center for Craniofacial Regeneration, Columbia University Medical Center , New York, New York
| | - Kimi Y Kong
- 1 Center for Craniofacial Regeneration, Columbia University Medical Center , New York, New York.,7 Hematology/Oncology Division, Department of Medicine, University of Florida , Gainesville, Florida
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Niibe K, Zhang M, Nakazawa K, Morikawa S, Nakagawa T, Matsuzaki Y, Egusa H. The potential of enriched mesenchymal stem cells with neural crest cell phenotypes as a cell source for regenerative dentistry. JAPANESE DENTAL SCIENCE REVIEW 2016; 53:25-33. [PMID: 28479933 PMCID: PMC5405184 DOI: 10.1016/j.jdsr.2016.09.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 08/30/2016] [Accepted: 09/16/2016] [Indexed: 01/14/2023] Open
Abstract
Effective regenerative treatments for periodontal tissue defects have recently been demonstrated using mesenchymal stromal/stem cells (MSCs). Furthermore, current bioengineering techniques have enabled de novo fabrication of tooth-perio dental units in mice. These cutting-edge technologies are expected to address unmet needs within regenerative dentistry. However, to achieve efficient and stable treatment outcomes, preparation of an appropriate stem cell source is essential. Many researchers are investigating the use of adult stem cells for regenerative dentistry; bone marrow-derived MSCs (BM-MSCs) are particularly promising and presently used clinically. However, current BM-MSC isolation techniques result in a heterogeneous, non-reproducible cell population because of a lack of identified distinct BM-MSC surface markers. Recently, specific subsets of cell surface markers for BM-MSCs have been reported in mice (PDGFRα+ and Sca-1+) and humans (LNGFR+, THY-1+ and VCAM-1+), facilitating the isolation of unique enriched BM-MSCs (so-called “purified MSCs”). Notably, the enriched BM-MSC population contains neural crest-derived cells, which can differentiate into cells of neural crest- and mesenchymal lineages. In this review, characteristics of the enriched BM-MSCs are outlined with a focus on their potential application within future regenerative dentistry.
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Affiliation(s)
- Kunimichi Niibe
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Maolin Zhang
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Kosuke Nakazawa
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Satoru Morikawa
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Taneaki Nakagawa
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Yumi Matsuzaki
- Department of Cancer Biology, Faculty of Medicine, Shimane University, 89-1 Enya-cho Izumo, Shimane 693-8501, Japan
| | - Hiroshi Egusa
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan.,Center for Advanced Stem Cell and Regenerative Research, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
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Aurrekoetxea M, Irastorza I, García-Gallastegui P, Jiménez-Rojo L, Nakamura T, Yamada Y, Ibarretxe G, Unda FJ. Wnt/β-Catenin Regulates the Activity of Epiprofin/Sp6, SHH, FGF, and BMP to Coordinate the Stages of Odontogenesis. Front Cell Dev Biol 2016; 4:25. [PMID: 27066482 PMCID: PMC4811915 DOI: 10.3389/fcell.2016.00025] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Accepted: 03/14/2016] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND We used an in vitro tooth development model to investigate the effects of overactivation of the Wnt/β-catenin pathway during odontogenesis by bromoindirubin oxime reagent (BIO), a specific inhibitor of GSK-3 activity. RESULTS Overactivating the Wnt/β-catenin pathway at tooth initiation upregulated and ectopically expressed the epithelial markers Sonic Hedgehog (Shh), Epiprofin (Epfn), and Fibroblast growth factor8 (Fgf8), which are involved in the delimitation of odontogenic fields in the oral ectoderm. This result indicated an ectopic extension of the odontogenic potential. During tooth morphogenesis, Fibroblast growth factor4 (Fgf4), Fibroblast growth factor10 (Fgf10), Muscle segment homeobox 1 (Msx-1), Bone Morphogenetic protein 4 (Bmp4), and Dickkopf WNT signaling pathway inhibitor 1 (Dkk-1) were overexpressed in first molars cultured with BIO. Conversely, the expression levels of Wingless integration site 10b (Wnt-10b) and Shh were reduced. Additionally, the odontoblast differentiation markers Nestin and Epfn showed ectopic overexpression in the dental mesenchyme of BIO-treated molars. Moreover, alkaline phosphatase activity increased in the dental mesenchyme, again suggesting aberrant, ectopic mesenchymal cell differentiation. Finally, Bmp4 downregulated Epfn expression during dental morphogenesis. CONCLUSIONS We suggest the presence of a positive feedback loop wherein Epfn and β-catenin activate each other. The balance of the expression of these two molecules is essential for proper tooth development. We propose a possible link between Wnt, Bmp, and Epfn that would critically determine the correct patterning of dental cusps and the differentiation of odontoblasts and ameloblasts.
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Affiliation(s)
- Maitane Aurrekoetxea
- Department of Cell Biology and Histology, Faculty of Medicine and Dentistry, University of the Basque Country UPV/EHU Leioa, Spain
| | - Igor Irastorza
- Department of Cell Biology and Histology, Faculty of Medicine and Dentistry, University of the Basque Country UPV/EHU Leioa, Spain
| | - Patricia García-Gallastegui
- Department of Cell Biology and Histology, Faculty of Medicine and Dentistry, University of the Basque Country UPV/EHU Leioa, Spain
| | - Lucia Jiménez-Rojo
- Center of Dental Medicine, Institute of Oral Biology, University of Zurich Zurich, Switzerland
| | - Takashi Nakamura
- Division of Molecular Pharmacology and Cell Biophysics, Department of Oral Biology, Graduate School of Dentistry, Tohoku University Sendai, Japan
| | - Yoshihiko Yamada
- Laboratory of Cell and Developmental Biology, National Institute of Dental and Craniofacial Research, National Institutes of Health Bethesda, MD, USA
| | - Gaskon Ibarretxe
- Department of Cell Biology and Histology, Faculty of Medicine and Dentistry, University of the Basque Country UPV/EHU Leioa, Spain
| | - Fernando J Unda
- Department of Cell Biology and Histology, Faculty of Medicine and Dentistry, University of the Basque Country UPV/EHU Leioa, Spain
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Zheng Y, Jia L, Liu P, Yang D, Hu W, Chen S, Zhao Y, Cai J, Pei D, Ge L, Wei S. Insight into the maintenance of odontogenic potential in mouse dental mesenchymal cells based on transcriptomic analysis. PeerJ 2016; 4:e1684. [PMID: 26925321 PMCID: PMC4768683 DOI: 10.7717/peerj.1684] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 01/21/2016] [Indexed: 12/17/2022] Open
Abstract
Background. Mouse dental mesenchymal cells (mDMCs) from tooth germs of cap or later stages are frequently used in the context of developmental biology or whole-tooth regeneration due to their odontogenic potential. In vitro-expanded mDMCs serve as an alternative cell source considering the difficulty in obtaining primary mDMCs; however, cultured mDMCs fail to support tooth development as a result of functional failures of specific genes or pathways. The goal of this study was to identify the genes that maintain the odontogenic potential of mDMCs in culture. Methods. We examined the odontogenic potential of freshly isolated versus cultured mDMCs from the lower first molars of embryonic day 14.5 mice. The transcriptome of mDMCs was detected using RNA sequencing and the data were validated by qRT-PCR. Differential expression analysis and pathway analysis were conducted to identify the genes that contribute to the loss of odontogenic potential. Results. Cultured mDMCs failed to develop into well-structured tooth when they were recombined with dental epithelium. Compared with freshly isolated mDMCs, we found that 1,004 genes were upregulated and 948 were downregulated in cultured mDMCs. The differentially expressed genes were clustered in the biological processes and signaling pathways associated with tooth development. Following in vitro culture, genes encoding a wide array of components of MAPK, TGF-β/BMP, and Wnt pathways were significantly downregulated. Moreover, the activities of Bdnf, Vegfα, Bmp2, and Bmp7 were significantly inhibited in cultured mDMCs. Supplementation of VEGFα, BMP2, and BMP7 restored the expression of a subset of downregulated genes and induced mDMCs to form dentin-like structures in vivo. Conclusions.Vegfα, Bmp2, and Bmp7 play a role in the maintenance of odontogenic potential in mDMCs.
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Affiliation(s)
- Yunfei Zheng
- Department of Oral and Maxillofacial Surgery, Laboratory of Interdisciplinary Studies, Peking University School and Hospital of Stomatology, Beijing, China.,Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
| | - Lingfei Jia
- Department of Oral and Maxillofacial Surgery, Laboratory of Interdisciplinary Studies, Peking University School and Hospital of Stomatology, Beijing, China.,Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China.,Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
| | - Pengfei Liu
- Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Dandan Yang
- Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,Experimental Center of Pathogenobiology Immunology, Cytobiology and Genetic, College of Basic Medical Sciences of Jilin University, Jilin, China
| | - Waner Hu
- Department of Oral and Maxillofacial Surgery, Laboratory of Interdisciplinary Studies, Peking University School and Hospital of Stomatology, Beijing, China
| | - Shubin Chen
- Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Yuming Zhao
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
| | - Jinglei Cai
- Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Duanqing Pei
- Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Lihong Ge
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
| | - Shicheng Wei
- Department of Oral and Maxillofacial Surgery, Laboratory of Interdisciplinary Studies, Peking University School and Hospital of Stomatology, Beijing, China.,Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
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22
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Zhou C, Yang G, Chen M, Wang C, He L, Xiang L, Chen D, Ling J, Mao JJ. Lhx8 mediated Wnt and TGFβ pathways in tooth development and regeneration. Biomaterials 2015; 63:35-46. [PMID: 26081866 DOI: 10.1016/j.biomaterials.2015.06.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 05/31/2015] [Accepted: 06/01/2015] [Indexed: 12/11/2022]
Abstract
LIM homeobox 8 (Lhx8) is a highly conserved transcriptional factor with recently illustrated roles in cholinergic and GABAergic differentiation, and is expressed in neural crest derived craniofacial tissues during development. However, Lhx8 functions and signaling pathways are largely elusive. Here we showed that Lhx8 regulates dental mesenchyme differentiation and function via Wnt and TGFβ pathways. Lhx8 expression was restricted to dental mesenchyme from E11.5 to a peak at E14.5, and absent in dental epithelium. By reconstituting dental epithelium and mesenchyme in an E16.5 tooth organ, Lhx8 knockdown accelerated dental mesenchyme differentiation; conversely, Lhx8 overexpression attenuated dentin formation. Lhx8 overexpressed adult human dental pulp stem/progenitor cells in β-tricalcium phosphate cubes attenuated mineralized matrix production in vivo. Gene profiling revealed that postnatal dental pulp stem/progenitor cells upon Lhx8 overexpression modified matrix related gene expression including Dspp, Cola1 and osteocalcin. Lhx8 transcriptionally activated Wnt and TGFβ pathways, and its attenuation upregulated multiple dentinogenesis genes. Together, Lhx8 regulates dentin development and regeneration by fine-turning Wnt and TGFβ signaling.
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Affiliation(s)
- Chen Zhou
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, 56 Lingyuanxi Road, Guangzhou 510055, China; Center for Craniofacial Regeneration, Columbia University Medical Center, 630 W. 168 St. - PH7E - CDM, New York, NY 10032, USA
| | - Guodong Yang
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, 56 Lingyuanxi Road, Guangzhou 510055, China
| | - Mo Chen
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, 56 Lingyuanxi Road, Guangzhou 510055, China
| | - Chenglin Wang
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, 56 Lingyuanxi Road, Guangzhou 510055, China
| | - Ling He
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, 56 Lingyuanxi Road, Guangzhou 510055, China; Center for Craniofacial Regeneration, Columbia University Medical Center, 630 W. 168 St. - PH7E - CDM, New York, NY 10032, USA
| | - Lusai Xiang
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, 56 Lingyuanxi Road, Guangzhou 510055, China; Center for Craniofacial Regeneration, Columbia University Medical Center, 630 W. 168 St. - PH7E - CDM, New York, NY 10032, USA
| | - Danying Chen
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, 56 Lingyuanxi Road, Guangzhou 510055, China
| | - Junqi Ling
- Center for Craniofacial Regeneration, Columbia University Medical Center, 630 W. 168 St. - PH7E - CDM, New York, NY 10032, USA.
| | - Jeremy J Mao
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, 56 Lingyuanxi Road, Guangzhou 510055, China.
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BMP7 and EREG Contribute to the Inductive Potential of Dental Mesenchyme. Sci Rep 2015; 5:9903. [PMID: 25952286 PMCID: PMC4424660 DOI: 10.1038/srep09903] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 03/17/2015] [Indexed: 02/05/2023] Open
Abstract
Odontogenesis is accomplished by reciprocal signaling between the epithelial and mesenchymal compartments. It is generally accepted that the inductive mesenchyme is capable of inducing the odontogenic commitment of both dental and non-dental epithelial cells. However, the duration of this signal in the developing dental mesenchyme and whether adult dental pulp tissue maintains its inductive capability remain unclear. This study investigated the contribution of growth factors to regulating the inductive potential of the dental mesenchyme. Human oral epithelial cells (OEs) were co-cultured with either human dental mesenchymal/papilla cells (FDPCs) or human dental pulp cells (ADPCs) under 2-dimensional or 3-dimensional conditions. Odontogenic-associated genes and proteins were detected by qPCR and immunofluorescence, respectively, and significant differences were observed between the two co-culture systems. The BMP7 and EREG expression levels in FDPCs were significantly higher than in ADPCs, as indicated by human growth factor PCR arrays and immunofluorescence analyses. OEs co-cultured with ADPCs supplemented with BMP7 and EREG expressed ameloblastic differentiation genes. Our study suggests that BMP7 and EREG expression in late bell-stage human dental papilla contributes to the inductive potential of dental mesenchyme. Furthermore, adult dental pulp cells supplemented with these two growth factors re-established the inductive potential of postnatal dental pulp tissue.
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Zheng Y, Chen M, He L, Marão HF, Sun DM, Zhou J, Kim SG, Song S, Wang SL, Mao JJ. Mesenchymal dental pulp cells attenuate dentin resorption in homeostasis. J Dent Res 2015; 94:821-7. [PMID: 25762594 DOI: 10.1177/0022034515575347] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Dentin in permanent teeth rarely undergoes resorption in development, homeostasis, or aging, in contrast to bone that undergoes periodic resorption/remodeling. The authors hypothesized that cells in the mesenchymal compartment of dental pulp attenuate osteoclastogenesis. Mononucleated and adherent cells from donor-matched rat dental pulp (dental pulp cells [DPCs]) and alveolar bone (alveolar bone cells [ABCs]) were isolated and separately cocultured with primary rat splenocytes. Primary splenocytes readily aggregated and formed osteoclast-like cells in chemically defined osteoclastogenesis medium with 20 ng/mL of macrophage colony-stimulating factor (M-CSF) and 50 ng/mL of receptor activator of nuclear factor κB ligand (RANKL). Strikingly, DPCs attenuated osteoclastogenesis when cocultured with primary splenocytes, whereas ABCs slightly but significantly promoted osteoclastogenesis. DPCs yielded ~20-fold lower RANKL expression but >2-fold higher osteoprotegerin (OPG) expression than donor-matched ABCs, yielding a RANKL/OPG ratio of 41:1 (ABCs:DPCs). Vitamin D3 significantly promoted RANKL expression in ABCs and OPG in DPCs. In vivo, rat maxillary incisors were atraumatically extracted (without any tooth fractures), followed by retrograde pulpectomy to remove DPCs and immediate replantation into the extraction sockets to allow repopulation of the surgically treated root canal with periodontal and alveolar bone-derived cells. After 8 wk, multiple dentin/root resorption lacunae were present in root dentin with robust RANKL and OPG expression. There were areas of dentin resoprtion alternating with areas of osteodentin formation in root dentin surface in the observed 8 wk. These findings suggest that DPCs of the mesenchymal compartment have an innate ability to attenuate osteoclastogenesis and that this innate ability may be responsible for the absence of dentin resorption in homeostasis. Mesenchymal attenuation of dentin resorption may have implications in internal resorption in the root canal, pulp/dentin regeneration, and root resorption in orthodontic tooth movement.
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Affiliation(s)
- Y Zheng
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA Department of Endodontics, Capital Medical University School of Stomatology, Beijing, China
| | - M Chen
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - L He
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - H F Marão
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - D M Sun
- Department of Neuroscience, Rutgers University, Piscataway, NJ, USA
| | - J Zhou
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - S G Kim
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - S Song
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - S L Wang
- Department of Endodontics, Capital Medical University School of Stomatology, Beijing, China
| | - J J Mao
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
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Babajko S, de La Dure-Molla M, Jedeon K, Berdal A. MSX2 in ameloblast cell fate and activity. Front Physiol 2015; 5:510. [PMID: 25601840 PMCID: PMC4283505 DOI: 10.3389/fphys.2014.00510] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Accepted: 12/08/2014] [Indexed: 11/29/2022] Open
Abstract
While many effectors have been identified in enamel matrix and cells via genetic studies, physiological networks underlying their expression levels and thus the natural spectrum of enamel thickness and degree of mineralization are now just emerging. Several transcription factors are candidates for enamel gene expression regulation and thus the control of enamel quality. Some of these factors, such as MSX2, are mainly confined to the dental epithelium. MSX2 homeoprotein controls several stages of the ameloblast life cycle. This chapter introduces MSX2 and its target genes in the ameloblast and provides an overview of knowledge regarding its effects in vivo in transgenic mouse models. Currently available in vitro data on the role of MSX2 as a transcription factor and its links to other players in ameloblast gene regulation are considered. MSX2 modulations are relevant to the interplay between developmental, hormonal and environmental pathways and in vivo investigations, notably in the rodent incisor, have provided insight into dental physiology. Indeed, in vivo models are particularly promising for investigating enamel formation and MSX2 function in ameloblast cell fate. MSX2 may be central to the temporal-spatial restriction of enamel protein production by the dental epithelium and thus regulation of enamel quality (thickness and mineralization level) under physiological and pathological conditions. Studies on MSX2 show that amelogenesis is not an isolated process but is part of the more general physiology of coordinated dental-bone complex growth.
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Affiliation(s)
- Sylvie Babajko
- Laboratory of Molecular Oral Pathophysiology, Centre de Recherche des Cordeliers, Institut National de la Santé et de la Recherche Médicale, UMRS 1138 Paris, France ; Laboratory of Molecular Oral Pathophysiology, Centre de Recherche des Cordeliers, Université Paris-Descartes Paris, France ; Laboratory of Molecular Oral Pathophysiology, Centre de Recherche des Cordeliers, Université Pierre et Marie Curie-Paris Paris, France ; Laboratory of Molecular Oral Pathophysiology, Centre de Recherche des Cordeliers, Université Paris-Diderot Paris, France
| | - Muriel de La Dure-Molla
- Laboratory of Molecular Oral Pathophysiology, Centre de Recherche des Cordeliers, Institut National de la Santé et de la Recherche Médicale, UMRS 1138 Paris, France ; Laboratory of Molecular Oral Pathophysiology, Centre de Recherche des Cordeliers, Université Paris-Descartes Paris, France ; Laboratory of Molecular Oral Pathophysiology, Centre de Recherche des Cordeliers, Université Pierre et Marie Curie-Paris Paris, France ; Laboratory of Molecular Oral Pathophysiology, Centre de Recherche des Cordeliers, Université Paris-Diderot Paris, France ; Centre de Référence des Maladies Rares de la Face et de la Cavité Buccale MAFACE, Hôpital Rothschild Paris, France
| | - Katia Jedeon
- Laboratory of Molecular Oral Pathophysiology, Centre de Recherche des Cordeliers, Institut National de la Santé et de la Recherche Médicale, UMRS 1138 Paris, France ; Laboratory of Molecular Oral Pathophysiology, Centre de Recherche des Cordeliers, Université Paris-Descartes Paris, France ; Laboratory of Molecular Oral Pathophysiology, Centre de Recherche des Cordeliers, Université Pierre et Marie Curie-Paris Paris, France ; Laboratory of Molecular Oral Pathophysiology, Centre de Recherche des Cordeliers, Université Paris-Diderot Paris, France
| | - Ariane Berdal
- Laboratory of Molecular Oral Pathophysiology, Centre de Recherche des Cordeliers, Institut National de la Santé et de la Recherche Médicale, UMRS 1138 Paris, France ; Laboratory of Molecular Oral Pathophysiology, Centre de Recherche des Cordeliers, Université Paris-Descartes Paris, France ; Laboratory of Molecular Oral Pathophysiology, Centre de Recherche des Cordeliers, Université Pierre et Marie Curie-Paris Paris, France ; Laboratory of Molecular Oral Pathophysiology, Centre de Recherche des Cordeliers, Université Paris-Diderot Paris, France ; Centre de Référence des Maladies Rares de la Face et de la Cavité Buccale MAFACE, Hôpital Rothschild Paris, France
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Xiang L, Chen M, He L, Cai B, Du Y, Zhang X, Zhou C, Wang C, Mao JJ, Ling J. Wnt5a regulates dental follicle stem/progenitor cells of the periodontium. Stem Cell Res Ther 2014; 5:135. [PMID: 25510849 PMCID: PMC4446079 DOI: 10.1186/scrt525] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Accepted: 11/18/2014] [Indexed: 12/20/2022] Open
Abstract
Introduction Dental follicle gives rise to one or several tissues of the periodontium including the periodontal ligament, cementum and/or alveolar bone. Whether Wnt5a is expressed in the postnatal periodontium or regulates dental follicle stem/progenitor cells is unknown. Methods Dental follicle stem/progenitor cells were isolated from postnatal day 1 (p1) to p11 from rat mandibular first molars. Immunolocalization mapped Wnt5a expression in the alveolar bone, periodontal ligament, and the developing ameloblast and odontoblast layers. Mononucleated and adherent cells were isolated from p7 dental follicle. Wnt5a was overexpressed in dental follicle stem/progenitor cells to study their proliferation, osteogenic differentiation and migration behavior, with subpopulations of native dental follicle stem/progenitor cells as controls, using real-time PCR (Taqman), Lenti-viral transfection, Western blotting and immunofluorescence. Results Wnt5a was expressed consistently in p1 to p11 rat peridontium. Native, p7 dental follicle stem/progenitor cells had modest ability to mineralize in the tested 14 days. Even in chemically defined osteogenesis medium, dental follicle stem/progenitor cells only showed modest mineralization. Upon addition of 300 ng/mL Wnt5a protein in osteogenesis medium, dental follicle stem/progenitor cells displayed mineralization that was still unremarkable. Chemically induced or Wnt5a-induced mineralization of dental follicle cells only occurred sparsely. Combination of Wnt5a with 100 ng/mL BMP2 finally prompted dental follicle stem/progenitor cells to produce robust mineralization with elevated expression of Runx2, alkaline phosphatase, collagen 1α1 and osteocalcin. Thus, native dental follicle stem/progenitor cells or some of their fractions may be somewhat modest in mineralization. Strikingly, Wnt5a protein significantly augmented RANKL ligand, suggesting putative regulatory roles of dental follicle stem/progenitor cells for the monocyte/osteoclast lineage and potential involvement in alveolar bone remodeling and/or resorption. P-Jnk1/2 was activated in Wnt5a overexpressed dental follicle cells; conversely, exposure to SP600125, a c-Jun N-terminal kinase (JNK) inhibitor attenuated Runx2, collagen 1α1 and osteocalcin expression either in the presence or absence of Wnt5a. Wnt5a overexpression in dental follicle stem/progenitor cells significantly reduced their proliferation rates, but robustly augmented their migration capacity. Conclusions These findings provide a glimpse of Wnt5a’s putative roles in dental follicle stem/progenitor cells and the periodontium with implications in periodontal disease, tooth eruption, dental implant bone healing and orthodontic tooth movement.
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