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Xu S, Wei J, Liu Y, Zhang L, Duan M, Li J, Niu Z, Pu X, Huang M, Chen H, Zhou X, Xie J. PDGF-AA guides cell crosstalk between human dental pulp stem cells in vitro via the PDGFR-α/PI3K/Akt axis. Int Endod J 2024; 57:549-565. [PMID: 38332717 DOI: 10.1111/iej.14038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 01/24/2024] [Accepted: 01/25/2024] [Indexed: 02/10/2024]
Abstract
AIM To explore the influence of PDGF-AA on cell communication between human dental pulp stem cells (DPSCs) by characterizing gap junction intercellular communication (GJIC) and its potential biomechanical mechanism. METHODOLOGY Quantitative real-time PCR was used to measure connexin family member expression in DPSCs. Cell migration and CCK-8 assays were utilized to examine the influence of PDGF-AA on DPSC migration and proliferation. A scrape loading/dye transfer assay was applied to evaluate GJIC triggered by PDGF-AA, a PI3K/Akt signalling pathway blocker (LY294002) and a PDGFR-α blocker (AG1296). Western blotting and immunofluorescence were used to test the expression and distribution of the Cx43 and p-Akt proteins in DPSCs. Scanning electron microscopy (SEM) and immunofluorescence were used to observe the morphology of GJIC in DPSCs. RESULTS PDGF-AA promoted gap junction formation and intercellular communication between human dental pulp stem cells. PDGF-AA upregulates the expression of Cx43 to enhance gap junction formation and intercellular communication. PDGF-AA binds to PDGFR-α and activates PI3K/Akt signalling to regulate cell communication. CONCLUSIONS This research demonstrated that PDGF-AA can enhance Cx43-mediated GJIC in DPSCs via the PDGFR-α/PI3K/Akt axis, which provides new cues for dental pulp regeneration from the perspective of intercellular communication.
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Affiliation(s)
- Siqun Xu
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Jieya Wei
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Yang Liu
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Li Zhang
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Mengmeng Duan
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Jiazhou Li
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Zhixing Niu
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Xiaohua Pu
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Minglei Huang
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Hao Chen
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Xuedong Zhou
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Jing Xie
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
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Alharbi TM, Thabet AM, Alabbadi SH, Alhazmi MY, Khan HF, AlRasheed MA, Al-Twalbeh NA, Alsuhaim AS, Alqahtani NS. Unlocking the Potential of Cellular Guidance in Endodontics: Advancing the Process of Pulp Regeneration and Beyond. Cureus 2024; 16:e51651. [PMID: 38318576 PMCID: PMC10839349 DOI: 10.7759/cureus.51651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/04/2024] [Indexed: 02/07/2024] Open
Abstract
Regenerative endodontics represents a paradigm shift in dental therapy, with the potential to not only restore damaged dental tissues but also to preserve the vitality of teeth. At the heart of this innovative approach is cell homing, a technique that harnesses the body's own healing mechanisms by recruiting endogenous stem cells to the site of dental injury for effective tissue regeneration. This review delves into the intricate processes of cell homing in the context of regenerative endodontics, particularly focusing on its application in immature teeth with open apices. It examines the role of bioactive molecules, scaffolds, and growth factors in orchestrating cell migration and differentiation within the root canal space. In addition, the review addresses the current limitations in clinical practice, such as the challenges in completely regenerating the pulp-dentin complex and the unpredictability in long-term outcomes. It also explores future possibilities, including the potential for more refined and effective regenerative strategies. By providing a comprehensive overview of the current state of cell homing in regenerative endodontics, this article aims to contribute to the ongoing development of advanced therapeutic techniques that could revolutionize endodontic treatment and improve patient care.
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Affiliation(s)
- Tariq M Alharbi
- Endodontics, King Fahad General Hospital, Medina, SAU
- Endodontics, Speciality Dental Center, Medina, SAU
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Hazrati P, Mirtaleb MH, Boroojeni HSH, Koma AAY, Nokhbatolfoghahaei H. Current Trends, Advances, and Challenges of Tissue Engineering-Based Approaches of Tooth Regeneration: A Review of the Literature. Curr Stem Cell Res Ther 2024; 19:473-496. [PMID: 35984017 DOI: 10.2174/1574888x17666220818103228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/17/2022] [Accepted: 06/01/2022] [Indexed: 11/22/2022]
Abstract
INTRODUCTION Tooth loss is a significant health issue. Currently, this situation is often treated with the use of synthetic materials such as implants and prostheses. However, these treatment modalities do not fully meet patients' biological and mechanical needs and have limited longevity. Regenerative medicine focuses on the restoration of patients' natural tissues via tissue engineering techniques instead of rehabilitating with artificial appliances. Therefore, a tissue-engineered tooth regeneration strategy seems like a promising option to treat tooth loss. OBJECTIVE This review aims to demonstrate recent advances in tooth regeneration strategies and discoveries about underlying mechanisms and pathways of tooth formation. RESULTS AND DISCUSSION Whole tooth regeneration, tooth root formation, and dentin-pulp organoid generation have been achieved by using different seed cells and various materials for scaffold production. Bioactive agents are critical elements for the induction of cells into odontoblast or ameloblast lineage. Some substantial pathways enrolled in tooth development have been figured out, helping researchers design their experiments more effectively and aligned with the natural process of tooth formation. CONCLUSION According to current knowledge, tooth regeneration is possible in case of proper selection of stem cells, appropriate design and manufacturing of a biocompatible scaffold, and meticulous application of bioactive agents for odontogenic induction. Understanding innate odontogenesis pathways play a crucial role in accurately planning regenerative therapeutic interventions in order to reproduce teeth.
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Affiliation(s)
- Parham Hazrati
- School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Helia Sadat Haeri Boroojeni
- Oral and Maxillofacial Surgery Department, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Hanieh Nokhbatolfoghahaei
- Dental Research Center, Research Institute of Dental Sciences, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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4
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Wei H, Du S, Parksong J, Pasolli HA, Matte-Martone C, Regot S, Gonzalez LE, Xin T, Greco V. Organ function is preserved despite reorganization of niche architecture in the hair follicle. Cell Stem Cell 2023; 30:962-972.e6. [PMID: 37419106 PMCID: PMC10362479 DOI: 10.1016/j.stem.2023.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 05/01/2023] [Accepted: 06/07/2023] [Indexed: 07/09/2023]
Abstract
The ability of stem cells to build and replenish tissues depends on support from their niche. Although niche architecture varies across organs, its functional importance is unclear. During hair follicle growth, multipotent epithelial progenitors build hair via crosstalk with their remodeling fibroblast niche, the dermal papilla, providing a powerful model to functionally interrogate niche architecture. Through mouse intravital imaging, we show that dermal papilla fibroblasts remodel individually and collectively to form a morphologically polarized, structurally robust niche. Asymmetric TGF-β signaling precedes morphological niche polarity, and loss of TGF-β signaling in dermal papilla fibroblasts leads them to progressively lose their stereotypic architecture, instead surrounding the epithelium. The reorganized niche induces the redistribution of multipotent progenitors but nevertheless supports their proliferation and differentiation. However, the differentiated lineages and hairs produced by progenitors are shorter. Overall, our results reveal that niche architecture optimizes organ efficiency but is not absolutely essential for organ function.
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Affiliation(s)
- Haoyang Wei
- Department of Genetics, Yale School of Medicine, New Haven, CT 06510, USA
| | - Shuangshuang Du
- Department of Genetics, Yale School of Medicine, New Haven, CT 06510, USA
| | - Jeeun Parksong
- Departments of Cell Biology and Pathology, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
| | - H Amalia Pasolli
- Electron Microscopy Resource Center, The Rockefeller University, New York, NY 10065, USA
| | | | - Sergi Regot
- Department of Molecular Biology and Genetics, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
| | - Lauren E Gonzalez
- Department of Genetics, Yale School of Medicine, New Haven, CT 06510, USA
| | - Tianchi Xin
- Department of Genetics, Yale School of Medicine, New Haven, CT 06510, USA.
| | - Valentina Greco
- Department of Genetics, Yale School of Medicine, New Haven, CT 06510, USA; Departments of Cell Biology and Dermatology, Yale Stem Cell Center, Yale Cancer Center, Yale School of Medicine, New Haven, CT 06510, USA.
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5
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Choi MJ, You TM, Jang YJ. Galectin-3 Plays an Important Role in BMP7-Induced Cementoblastic Differentiation of Human Periodontal Ligament Cells by Interacting with Extracellular Components. Stem Cells Int 2023; 2023:5924286. [PMID: 37396953 PMCID: PMC10313471 DOI: 10.1155/2023/5924286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 05/01/2023] [Accepted: 06/10/2023] [Indexed: 07/04/2023] Open
Abstract
Human periodontal ligament stem cells (hPDLSCs) contain multipotent postnatal stem cells that differentiate into PDL progenitors, osteoblasts, and cementoblasts. Previously, we obtained cementoblast-like cells from hPDLSCs using bone morphogenetic protein 7 (BMP7) treatment. Differentiation into appropriate progenitor cells requires interactions and changes between stem or progenitor cells and their so-called environment niches, and cell surface markers play an important role. However, cementoblast-specific cell surface markers have not yet been fully studied. Through decoy immunization with intact cementoblasts, we developed a series of monoclonal antibodies against cementoblast-specific membrane/extracellular matrix (ECM) molecules. One of these antibodies, the anti-CM3 antibody, recognized an approximate 30 kDa protein in a mouse cementoblast cell line, and the CM3 antigenic molecule accumulated in the cementum region of human tooth roots. Using mass spectrometric analysis, we found that the antigenic molecules recognized by the anti-CM3 antibody were galectin-3. As cementoblastic differentiation progressed, the expression of galectin-3 increased, and it localized at the cell surface. Inhibition of galectin-3 via siRNA and a specific inhibitor showed the complete blockage of cementoblastic differentiation and mineralization. In contrast, ectopic expression of galectin-3 induced cementoblastic differentiation. Galectin-3 interacted with laminin α2 and BMP7, and these interactions were diminished by galectin-3 inhibitors. These results suggested that galectin-3 participates in binding to the ECM component and trapping BMP7 to induce, in a sustained fashion, the upregulation of cementoblastic differentiation. Finally, galectin-3 could be a potential cementoblast-specific cell surface marker, with functional importance in cell-to-ECM interactions.
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Affiliation(s)
- Min-Jeong Choi
- Department of Nanobiomedical Science and BK21 FOUR NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 31116, Republic of Korea
| | - Tae Min You
- Department of Advanced General Dentistry, School of Dentistry, Dankook University, Cheonan 31116, Republic of Korea
| | - Young-Joo Jang
- Department of Nanobiomedical Science and BK21 FOUR NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 31116, Republic of Korea
- Department of Oral Biochemistry, School of Dentistry, Dankook University, Cheonan 31116, Republic of Korea
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Iwayama T, Sakashita H, Takedachi M, Murakami S. Periodontal tissue stem cells and mesenchymal stem cells in the periodontal ligament. JAPANESE DENTAL SCIENCE REVIEW 2022; 58:172-178. [PMID: 35607404 PMCID: PMC9123259 DOI: 10.1016/j.jdsr.2022.04.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 04/21/2022] [Accepted: 04/26/2022] [Indexed: 12/24/2022] Open
Abstract
Periodontal tissue stem cells, which play a crucial role in maintaining the homeostasis of periodontal tissues, are found in the periodontal ligament (PDL). These cells have long been referred to as mesenchymal stem/stromal cells (MSCs), and their clinical applications have been extensively studied. However, tissue stem cells in the PDL have not been thoroughly investigated, and they may be different from MSCs. Recent advances in stem cell biology, such as genetic lineage tracing, identification of label-retaining cells, and single-cell transcriptome analysis, have made it possible to analyze tissue stem cells in the PDL in vivo. In this review, we summarize recent findings on these stem cell populations in PDL and discuss future research directions toward developing periodontal regenerative therapy.
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7
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Iwayama T, Iwashita M, Miyashita K, Sakashita H, Matsumoto S, Tomita K, Bhongsatiern P, Kitayama T, Ikegami K, Shimbo T, Tamai K, Murayama MA, Ogawa S, Iwakura Y, Yamada S, Olson LE, Takedachi M, Murakami S. Plap-1 lineage tracing and single-cell transcriptomics reveal cellular dynamics in the periodontal ligament. Development 2022; 149:277273. [DOI: 10.1242/dev.201203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 09/05/2022] [Indexed: 01/25/2023]
Abstract
ABSTRACT
Periodontal tissue supports teeth in the alveolar bone socket via fibrous attachment of the periodontal ligament (PDL). The PDL contains periodontal fibroblasts and stem/progenitor cells, collectively known as PDL cells (PDLCs), on top of osteoblasts and cementoblasts on the surface of alveolar bone and cementum, respectively. However, the characteristics and lineage hierarchy of each cell type remain poorly defined. This study identified periodontal ligament associated protein-1 (Plap-1) as a PDL-specific extracellular matrix protein. We generated knock-in mice expressing CreERT2 and GFP specifically in Plap-1-positive PDLCs. Genetic lineage tracing confirmed the long-standing hypothesis that PDLCs differentiate into osteoblasts and cementoblasts. A PDL single-cell atlas defined cementoblasts and osteoblasts as Plap-1−Ibsp+Sparcl1+ and Plap-1−Ibsp+Col11a2+, respectively. Other populations, such as Nes+ mural cells, S100B+ Schwann cells, and other non-stromal cells, were also identified. RNA velocity analysis suggested that a Plap-1highLy6a+ cell population was the source of PDLCs. Lineage tracing of Plap-1+ PDLCs during periodontal injury showed periodontal tissue regeneration by PDLCs. Our study defines diverse cell populations in PDL and clarifies the role of PDLCs in periodontal tissue homeostasis and repair.
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Affiliation(s)
- Tomoaki Iwayama
- Osaka University Graduate School of Dentistry 1 Department of Periodontology , , Suita, Osaka 565-0871 , Japan
| | - Mizuho Iwashita
- Osaka University Graduate School of Dentistry 1 Department of Periodontology , , Suita, Osaka 565-0871 , Japan
| | | | - Hiromi Sakashita
- Osaka University Graduate School of Dentistry 1 Department of Periodontology , , Suita, Osaka 565-0871 , Japan
- StemRIM Institute of Regeneration-Inducing Medicine, Osaka University 3 , Suita 565-0871 , Japan
| | - Shuji Matsumoto
- Osaka University Graduate School of Dentistry 1 Department of Periodontology , , Suita, Osaka 565-0871 , Japan
| | - Kiwako Tomita
- Osaka University Graduate School of Dentistry 1 Department of Periodontology , , Suita, Osaka 565-0871 , Japan
| | - Phan Bhongsatiern
- Osaka University Graduate School of Dentistry 1 Department of Periodontology , , Suita, Osaka 565-0871 , Japan
| | - Tomomi Kitayama
- StemRIM Inc. 2 , Ibaraki, Osaka 567-0085 , Japan
- Osaka University Graduate School of Medicine 4 Department of Stem Cell Therapy Science , , Osaka 565-0871 , Japan
| | | | - Takashi Shimbo
- StemRIM Institute of Regeneration-Inducing Medicine, Osaka University 3 , Suita 565-0871 , Japan
- Osaka University Graduate School of Medicine 4 Department of Stem Cell Therapy Science , , Osaka 565-0871 , Japan
| | - Katsuto Tamai
- Osaka University Graduate School of Medicine 4 Department of Stem Cell Therapy Science , , Osaka 565-0871 , Japan
| | - Masanori A. Murayama
- Research Institute for Biomedical Sciences, Tokyo University of Science 5 , Noda, Chiba 278-8510 , Japan
| | - Shuhei Ogawa
- Research Institute for Biomedical Sciences, Tokyo University of Science 5 , Noda, Chiba 278-8510 , Japan
| | - Yoichiro Iwakura
- Research Institute for Biomedical Sciences, Tokyo University of Science 5 , Noda, Chiba 278-8510 , Japan
| | - Satoru Yamada
- Tohoku University Graduate School of Dentistry 6 Department of Periodontology and Endodontology , , Sendai, Miyagi 980-8575 , Japan
| | - Lorin E. Olson
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation 7 , Oklahoma City, OK 73104 , USA
| | - Masahide Takedachi
- Osaka University Graduate School of Dentistry 1 Department of Periodontology , , Suita, Osaka 565-0871 , Japan
| | - Shinya Murakami
- Osaka University Graduate School of Dentistry 1 Department of Periodontology , , Suita, Osaka 565-0871 , Japan
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8
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Weng Y, Wang H, Wu D, Xu S, Chen X, Huang J, Feng Y, Li L, Wang Z. A novel lineage of osteoprogenitor cells with dual epithelial and mesenchymal properties govern maxillofacial bone homeostasis and regeneration after MSFL. Cell Res 2022; 32:814-830. [PMID: 35821090 PMCID: PMC9436969 DOI: 10.1038/s41422-022-00687-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 06/10/2022] [Indexed: 12/12/2022] Open
Abstract
Bone regeneration originates from proliferation and differentiation of osteoprogenitors via either endochondral or intramembranous ossification; and the regeneration capacities decline with age and estrogen loss. Maxillary sinus floor lifting (MSFL) is a commonly used surgical procedure for guiding bone regeneration in maxilla. Radiographic analysis of 1210 clinical cases of maxilla bone regeneration after MSFL revealed that the intrasinus osteogenic efficacy was independent of age and gender, however; and this might be related to the Schneiderian membrane that lines the sinus cavity. In view of the particularity of this biological process, our present study aimed to elucidate the underlying mechanism of MSFL-induced bone regeneration. We first established a murine model to simulate the clinical MSFL. By single-cell RNA-sequencing and flow cytometry-based bulk RNA-sequencing, we identified a novel Krt14+Ctsk+ subset of cells that display both epithelial and mesenchymal properties and the transcriptomic feature of osteoprogenitors. Dual recombinases-mediated lineage tracing and loss-of-function analyses showed that these Krt14+Ctsk+ progenitors contribute to both MSFL-induced osteogenesis and physiological bone homeostasis by differentiating into Krt14-Ctsk+ descendants which show robust osteogenic capacity. In addition, we detected a similar population of Krt14+Ctsk+ cells in human samples of Schneiderian membrane, which show a highly similar osteogenic potential and transcriptomic feature to the corresponding cells in mice. The identification of this Krt14+Ctsk+ population, featured by osteoprogenitor characteristics and dual epithelial-mesenchymal properties, provides new insight into the understanding of bone regeneration and may open more possibilities for clinical applications.
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Affiliation(s)
- Yuteng Weng
- Department of Oral Implantology & Department of Oral and Maxillofacial Surgery, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Haicheng Wang
- Department of Oral Implantology & Department of Oral and Maxillofacial Surgery, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Di Wu
- Department of Oral Implantology & Department of Oral and Maxillofacial Surgery, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Shuyu Xu
- Department of Oral Implantology & Department of Oral and Maxillofacial Surgery, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Xiaofan Chen
- Department of Oral Implantology & Department of Oral and Maxillofacial Surgery, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Jie Huang
- Department of Oral Implantology & Department of Oral and Maxillofacial Surgery, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Yanhuizhi Feng
- Department of Oral Implantology & Department of Oral and Maxillofacial Surgery, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Lin Li
- Department of Oral Implantology & Department of Oral and Maxillofacial Surgery, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Zuolin Wang
- Department of Oral Implantology & Department of Oral and Maxillofacial Surgery, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China.
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9
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Jing D, Chen Z, Men Y, Yi Y, Wang Y, Wang J, Yi J, Wan L, Shen B, Feng JQ, Zhao Z, Zhao H, Li C. Response of Gli1 + Suture Stem Cells to Mechanical Force Upon Suture Expansion. J Bone Miner Res 2022; 37:1307-1320. [PMID: 35443291 DOI: 10.1002/jbmr.4561] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 01/30/2022] [Accepted: 03/21/2022] [Indexed: 02/05/2023]
Abstract
Normal development of craniofacial sutures is crucial for cranial and facial growth in all three dimensions. These sutures provide a unique niche for suture stem cells (SuSCs), which are indispensable for homeostasis, damage repair, as well as stress balance. Expansion appliances are now routinely used to treat underdevelopment of the skull and maxilla, stimulating the craniofacial sutures through distraction osteogenesis. However, various treatment challenges exist due to a lack of full understanding of the mechanism through which mechanical forces stimulate suture and bone remodeling. To address this issue, we first identified crucial steps in the cycle of suture and bone remodeling based on the established standard suture expansion model. Observed spatiotemporal morphological changes revealed that the remodeling cycle is approximately 3 to 4 weeks, with collagen restoration proceeding more rapidly. Next, we traced the fate of the Gli1+ SuSCs lineage upon application of tensile force in three dimensions. SuSCs were rapidly activated and greatly contributed to bone remodeling within 1 month. Furthermore, we confirmed the presence of Wnt activity within Gli1+ SuSCs based on the high co-expression ratio of Gli1+ cells and Axin2+ cells, which also indicated the homogeneity and heterogeneity of two cell groups. Because Wnt signaling in the sutures is highly upregulated upon tensile force loading, conditional knockout of β-catenin largely restricted the activation of Gli1+ SuSCs and suppressed bone remodeling under physiological and expansion conditions. Thus, we concluded that Gli1+ SuSCs play essential roles in suture and bone remodeling stimulated by mechanical force and that Wnt signaling is crucial to this process. © 2022 American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Dian Jing
- Department of Orthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai, China.,State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Zexi Chen
- Chinese Institute for Brain Research, Beijing, China.,Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
| | - Yi Men
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yating Yi
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuhong Wang
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China
| | - Jun Wang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jianru Yi
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Lingyun Wan
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Bo Shen
- National Institute of Biological Sciences, Beijing, China.,Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, China
| | - Jian Q Feng
- Department of Biomedical Sciences, College of Dentistry, Texas A&M University, Dallas, TX, USA
| | - Zhihe Zhao
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Hu Zhao
- Chinese Institute for Brain Research, Beijing, China
| | - Chaoyuan Li
- Department of Implantology, School and Hospital of Stomatology, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Tongji University, Shanghai, China
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10
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Transcriptome Profile of Membrane and Extracellular Matrix Components in Ligament-Fibroblastic Progenitors and Cementoblasts Differentiated from Human Periodontal Ligament Cells. Genes (Basel) 2022; 13:genes13040659. [PMID: 35456465 PMCID: PMC9031187 DOI: 10.3390/genes13040659] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/05/2022] [Accepted: 04/06/2022] [Indexed: 02/04/2023] Open
Abstract
Ligament-fibroblastic cells and cementoblasts, two types of progenitor cells that differentiate from periodontal ligament stem cells (hPDLSCs), are responsible for the formation of the adhesive tissues in the tooth root. Since one of the factors that determines the fate of stem cell differentiation is the change in the microenvironment of the stem/progenitor cells, this study attempted to compare and analyze the molecular differences in the membrane and ECM of the two progenitor cells. Single cells derived from hPDLSCs were treated with TGF-β1 and BMP7 to obtain ligament-fibroblastic and cementoblastic cells, respectively. The transcriptome profiles of three independent replicates of each progenitor were evaluated using next-generation sequencing. The representative differentially expressed genes (DEGs) were verified by qRT-PCR, Western blot analysis, and immunohistochemistry. Among a total of 2245 DEGs identified, 142 and 114 DEGs related to ECM and cell membrane molecules were upregulated in ligament-fibroblastic and cementoblast-like cells, respectively. The major types of integrin and cadherin were found to be different between the two progenitor cells. In addition, the representative core proteins for each glycosaminoglycan-specific proteoglycan class were different between the two progenitors. This study provides a detailed understanding of cell–cell and cell–ECM interactions through the specific components of the membrane and ECM for ligament-fibroblastic and cementoblastic differentiation of hPDLSCs.
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11
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Wang M, Li J, Ye Y, Chen D, Song J. SHED‐derived exosomes improve the repair capacity and osteogenesis potential of hPDLCs. Oral Dis 2022; 29:1692-1705. [PMID: 35152542 DOI: 10.1111/odi.14153] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 09/10/2021] [Accepted: 10/29/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Exosomes secreted by stem cells are recognized as a critical component in tissue regeneration during stem cell-based therapy. Considering the limited sources and bone regeneration efficiency of human periodontal ligament cells (hPDLCs), we explored whether exosomes secreted by stem cells from human exfoliated deciduous teeth (SHED-exo) could improve the pluripotency and regenerative potential of hPDLCs. METHODS AND MATERIALS In hPDLCs, cell proliferation, migration, cell cycle, apoptosis, and osteogenic differentiation were detected after cells were exposed to SHED-exo (SHED-exo group), blank (control group), or control supernatant without exo (Csup group), via CCK-8, scratch analysis, flow cytometric, real-time PCR, and so on. Exosomes sequencing was performed to compare and analyze miRNAs contented in SHED-exo and hPDLC-exo. RESULTS As compared to control or Csup, SHED-exo significantly increased migration, apoptosis, and proliferation, promoted cell cycle transition from G1 to S phase in hPDLCs, and enhanced Runx2 expression and mineralization. In addition, it may be explained by the significant differences in miRNA contented in SHED-exo and hPDLC-exo. CONCLUSION Exosomes from SHED can improve cell proliferation, migration, cell cycle, apoptosis, and osteogenic differentiation of hPDLCs, which highlights the therapeutic value of this bioactive component in the regeneration of periodontal tissues using hPDLCs in clinical practice.
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Affiliation(s)
- Menghong Wang
- College of Stomatology Chongqing Medical University Chongqing China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences Chongqing China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education Chongqing China
| | - Jie Li
- College of Stomatology Chongqing Medical University Chongqing China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences Chongqing China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education Chongqing China
| | - Yanyan Ye
- Army Medical University Chongqing China
| | - Duanjing Chen
- College of Stomatology Chongqing Medical University Chongqing China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences Chongqing China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education Chongqing China
| | - Jinlin Song
- College of Stomatology Chongqing Medical University Chongqing China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences Chongqing China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education Chongqing China
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12
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Li J, Ju Y, Liu S, Fu Y, Zhao S. Exosomes derived from lipopolysaccharide-preconditioned human dental pulp stem cells regulate Schwann cell migration and differentiation. Connect Tissue Res 2021; 62:277-286. [PMID: 31769319 DOI: 10.1080/03008207.2019.1694010] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Purpose: Schwann cells (SCs) are the main source of odontoblasts. They can migrate to the sites of injury and differentiate into odontoblasts during tooth development and regeneration. However, the molecular mechanisms by which SCs repair dental damage remain to be fully elucidated. In addition, exosomes play a crucial role in regulating cell-cell interaction. Hence, we aim to explore the biological function of exosomes secreted by human dental pulp stem cells (hDPSCs) and their effect on SCs.Materials and Methods: Exosomes were extracted from the supernatant of hDPSCs (exo) and LPS- preconditioned hDPSCs (LPS-exo), respectively. Following the evaluation of specific surface proteins and exosomes size and morphology, SCs were treated with exo and LPS-exo, and we examined SCs proliferation, migration, and odontogenic differentiation in vitro.Results: Exosomes had the capacity to regulate SCs proliferation and migration. Furthermore, exosomes from both groups stimulated SCs to produce dentin sialoprotein and undergo mineralization; however, LPS-exo had a better ability to modulate SCs migration and odontogenic differentiation compared with exo.Conclusions: Exosomes from hDPSCs, especially from LPS- preconditioned hDPSCs, can promote the proliferation, migration and odontogenic differentiation of SCs. LPS might change the hDPSCs' intercellular signals, which might mediate the odontogenic differentiation of SCs, transmitting in the manner of "exosomes".
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Affiliation(s)
- Jiabei Li
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - Yanqin Ju
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - Shangfeng Liu
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - Yunyu Fu
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - Shouliang Zhao
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, P. R. China
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13
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A Cell-Based Approach to Dental Pulp Regeneration Using Mesenchymal Stem Cells: A Scoping Review. Int J Mol Sci 2021; 22:ijms22094357. [PMID: 33921924 PMCID: PMC8122243 DOI: 10.3390/ijms22094357] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/18/2021] [Accepted: 04/20/2021] [Indexed: 02/07/2023] Open
Abstract
Despite the recent explosion of investigations on dental pulp regeneration using various tissue engineering strategies, the translation of the findings from such studies into therapeutic applications has not been properly achieved. The purpose of this scoping review was to systematically review the efficacy of mesenchymal stem cell transplantation for dental pulp regeneration. A literature search was conducted using five electronic databases from their inception to January 2021 and supplemented by hand searches. A total of 17 studies, including two clinical trials and 15 animal studies using orthotopic pulp regeneration models, were included for the review. The risk of bias for the individual studies was assessed. This scoping review demonstrated that the regeneration of vascularized pulp-like tissue was achieved using the stem cell transplantation strategy in animal models. Autologous cell transplantation in two clinical studies also successfully regenerated vascularized vital tissue. Dental pulp stem cell subpopulations, such as mobilized dental pulp stem cells, injectable scaffolds such as atelocollagen, and a granulocyte-colony forming factor, were the most commonly used for pulp regeneration. The overall risk of bias was unclear for animal studies and was moderate or judged to raise some concerns for clinical studies. More high-quality clinical studies are needed to further determine the safety and efficacy of the stem cell transplantation strategy for dental pulp regeneration.
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14
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Huang S, Jin M, Su N, Chen L. New insights on the reparative cells in bone regeneration and repair. Biol Rev Camb Philos Soc 2020; 96:357-375. [PMID: 33051970 DOI: 10.1111/brv.12659] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 10/06/2020] [Accepted: 10/07/2020] [Indexed: 12/14/2022]
Abstract
Bone possesses a remarkable repair capacity to regenerate completely without scar tissue formation. This unique characteristic, expressed during bone development, maintenance and injury (fracture) healing, is performed by the reparative cells including skeletal stem cells (SSCs) and their descendants. However, the identity and functional roles of SSCs remain controversial due to technological difficulties and the heterogeneity and plasticity of SSCs. Moreover, for many years, there has been a biased view that bone marrow is the main cell source for bone repair. Together, these limitations have greatly hampered our understanding of these important cell populations and their potential applications in the treatment of fractures and skeletal diseases. Here, we reanalyse and summarize current understanding of the reparative cells in bone regeneration and repair and outline recent progress in this area, with a particular emphasis on the temporal and spatial process of fracture healing, the sources of reparative cells, an updated definition of SSCs, and markers of skeletal stem/progenitor cells contributing to the repair of craniofacial and long bones, as well as the debate between SSCs and pericytes. Finally, we also discuss the existing problems, emerging novel technologies and future research directions in this field.
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Affiliation(s)
- Shuo Huang
- Department of Wound Repair and Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University (Third Military Medical University), 10 Changjiang zhi Road, Yuzhong District, Chongqing, China
| | - Min Jin
- Department of Wound Repair and Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University (Third Military Medical University), 10 Changjiang zhi Road, Yuzhong District, Chongqing, China
| | - Nan Su
- Department of Wound Repair and Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University (Third Military Medical University), 10 Changjiang zhi Road, Yuzhong District, Chongqing, China
| | - Lin Chen
- Department of Wound Repair and Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University (Third Military Medical University), 10 Changjiang zhi Road, Yuzhong District, Chongqing, China
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15
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Qi X, Xiao Q, Sheng R, Jiang S, Yuan Q, Liu W. Endogenous GDF11 regulates odontogenic differentiation of dental pulp stem cells. J Cell Mol Med 2020; 24:11457-11464. [PMID: 32845070 PMCID: PMC7576269 DOI: 10.1111/jcmm.15754] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 05/27/2020] [Accepted: 08/03/2020] [Indexed: 02/05/2023] Open
Abstract
Dental stem cell‐based tooth regeneration is the futuristic treatment for missing teeth. Growth differentiation factor 11 (GDF11), a novel member of the TGF‐beta superfamily, has been reported to play a critical role in regulating stem cell differentiation. However, the role of endogenous GDF11 during dental stem cell differentiation remains unknown. Here, we have shown that GDF11 was highly expressed in dental pulp tissues in both mouse and human. Knockdown of endogenous GDF11 in human dental pulp stem cells (hDPSCs) led to comparable proliferation and migration but attenuated odontogenic differentiation as evidenced by alkaline phosphatase and Alizarin Red S staining. In addition, transcriptional levels of odontogenic‐related genes were significantly down‐regulated according to real‐time polymerase chain reaction. Mechanistically, we performed RNA sequencing analysis and found that silencing of endogenous GDF11 compromised the process of ossification and osteoblast differentiation, especially down‐regulated transcription expression of Wnt pathway‐specific genes. Immunofluorescence staining also showed diminished β‐catenin expression and nuclei accumulation after knockdown of endogenous GDF11 in hDPSCs. In summary, our results suggested that endogenous GDF11 positively regulate odontogenic differentiation of hDPSCs through canonical Wnt/β‐catenin signalling pathway.
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Affiliation(s)
- Xingying Qi
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qingyue Xiao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Rui Sheng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Shuang Jiang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Quan Yuan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Weiqing Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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16
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Zhang D, Zhang S, Wang J, Li Q, Xue H, Sheng R, Xiong Q, Qi X, Wen J, Fan Y, Zhou B, Yuan Q. LepR-Expressing Stem Cells Are Essential for Alveolar Bone Regeneration. J Dent Res 2020; 99:1279-1286. [PMID: 32585118 DOI: 10.1177/0022034520932834] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Stem cells play a critical role in bone regeneration. Multiple populations of skeletal stem cells have been identified in long bone, while their identity and functions in alveolar bone remain unclear. Here, we identified a quiescent leptin receptor–expressing (LepR+) cell population that contributed to intramembranous bone formation. Interestingly, these LepR+ cells became activated in response to tooth extraction and generated the majority of the newly formed bone in extraction sockets. In addition, genetic ablation of LepR+ cells attenuated extraction socket healing. The parabiosis experiments revealed that the LepR+ cells in the healing sockets were derived from resident tissue rather than peripheral blood circulation. Further studies on the mechanism suggested that these LepR+ cells were responsive to parathyroid hormone/parathyroid hormone 1 receptor (PTH/PTH1R) signaling. Collectively, we demonstrate that LepR+ cells, a postnatal skeletal stem cell population, are essential for alveolar bone regeneration of extraction sockets.
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Affiliation(s)
- D. Zhang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - S. Zhang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - J. Wang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Periodontology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Q. Li
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - H. Xue
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - R. Sheng
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Q. Xiong
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X. Qi
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - J. Wen
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y. Fan
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - B.O. Zhou
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences; University of Chinese Academy of Sciences, Shanghai, China
| | - Q. Yuan
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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17
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Li L, Fang J, Liu Y, Xiao L. LncRNA LOC100506178 promotes osteogenic differentiation via regulating miR-214-5p-BMP2 axis in human bone marrow mesenchymal stem cells. PeerJ 2020; 8:e8909. [PMID: 32328347 PMCID: PMC7166045 DOI: 10.7717/peerj.8909] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 03/14/2020] [Indexed: 02/05/2023] Open
Abstract
Osteogenic differentiation is an important role in dental implantation. Long no coding RNAs (lncRNAs) are a novel class of noncoding RNAs that have significant effects in a variety of diseases. However, the function and mechanisms of LOC100506178 in osteogenic differentiation and migration of bone morphogenetic protein 2 (BMP2)-induced osteogenic differentiation of human bone marrow mesenchymalstem cells (hBMSCs) remain largely unclear. BMP2 was used to induce osteogenic differentiation of hBMSCs. Quantitative real time PCR (qRT-PCR) was used to examine the expression of LOC100506178, miR-214-5p, Runt-related transcription factor 2 (RUNX2), Osterix (Osx), and Alkaline Phosphatase (ALP) in BMP2-induced osteogenic differentiation of hBMSCs. The function of LOC100506178 and miR-214-5p was explored in vitro using Alizarin Red S Staining, ALP activity, as well as in vivo ectopic bone formation. Luciferase reporter assay was performed to assess the association between LOC100506178 and miR-214-5p, as well as miR-214-5p and BMP2. The miR-214-5p sponging potential of LOC100506178 was evaluated by RNA immunoprecipitation. In the present study, the expression of LOC100506178 was found to be increased in BMP2-induced osteogenic differentiation of hBMSCs, accompanied with decreased miR-214-5p expression and increased RUNX2, Osx and ALP expression. LOC100506178 significantly induced, while miR-214-5p suppressed the BMP2-induced osteogenic differentiation of hBMSCs. Mechanistically, LOC100506178 was directly bound to miR-214-5p and miR-214-5p targeted the 3′-untranslated region of BMP2 to negatively regulate its expression. In conclusion, our data indicate a novel molecular pathway LOC100506178/miR-214-5p/BMP2 in relation to hBMSCs differentiation into osteoblasts, which may facilitate bone anabolism.
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Affiliation(s)
- Lina Li
- Geriatric & VIP Department, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, China
| | - Jie Fang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yi Liu
- Department of Stomatology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, China
| | - Li Xiao
- Department of Stomatology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, China
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18
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Gao X, Qin W, Chen L, Fan W, Ma T, Schneider A, Yang M, Obianom ON, Chen J, Weir MD, Shu Y, Zhao L, Lin Z, Xu HHK. Effects of Targeted Delivery of Metformin and Dental Pulp Stem Cells on Osteogenesis via Demineralized Dentin Matrix under High Glucose Conditions. ACS Biomater Sci Eng 2020; 6:2346-2356. [PMID: 33455311 DOI: 10.1021/acsbiomaterials.0c00124] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
High glucose condition inhibited osteoblast differentiation could be a main mechanism contributing to the decreased bone repair associated with diabetes. Metformin, a widely prescribed antidiabetic drug, was shown to have osteogenic properties in our previous study. Transplanted mesenchymal stromal cells (MSCs) may differentiate into osteoblasts and promote bone regeneration. Our study aimed to combine the benefits of metformin and MSCs transplantation on osteogenesis in high glucose conditions. We developed demineralized dentin matrix (DDM) as a carrier to target deliver metformin and dental pulp-derived MSCs (DPSCs). We collected clinically discarded teeth, isolated DPSCs from the dental pulp, and prepared the DDM from the dentin. The DDM was observed by scanning electron microscopy and was found to have well-distributed tubes. Then, metformin was loaded into the DDM to form the DDM-Met complex (DDM-Met); DDM-Met released metformin at a favorable concentration. The DPSCs seeded with the DDM-Met in a high glucose medium showed satisfactory attachment and viability together with increased mineralization and upregulated osteogenesis-related genes, including alkaline phosphatase (ALP), osteocalcin (OCN), runt-related transcription factor 2 (Runx2), and osteopontin (OPN). A possible mechanism of the enhanced osteogenic differentiation of DPSCs was explored, and the adenosine 5'-monophosphate (AMP)-activated protein kinase (AMPK) pathway was found to play a role in the enhancement of osteogenesis. DDM-Met appeared to be a successful metformin and DPSC carrier that allowed for the local delivery of metformin and DPSCs in high glucose conditions. DDM-Met-DPSC construct has promising prospects to promote osteogenesis and enhance the much-needed diabetic bone regeneration.
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Affiliation(s)
- Xianling Gao
- Guanghua School of Stomatology, Sun Yat-sen University & Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, P. R. China.,Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, Maryland 21201, United States
| | - Wei Qin
- Guanghua School of Stomatology, Sun Yat-sen University & Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, P. R. China.,Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, Maryland 21201, United States
| | - Lingling Chen
- Guanghua School of Stomatology, Sun Yat-sen University & Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, P. R. China
| | - Wenguo Fan
- Guanghua School of Stomatology, Sun Yat-sen University & Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, P. R. China
| | - Tao Ma
- Department of Oncology and Diagnostic Sciences, University of Maryland School of Dentistry, Baltimore, Maryland 21201, United States
| | - Abraham Schneider
- Department of Oncology and Diagnostic Sciences, University of Maryland School of Dentistry, Baltimore, Maryland 21201, United States
| | - Mengyao Yang
- Guanghua School of Stomatology, Sun Yat-sen University & Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, P. R. China
| | - Obinna N Obianom
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Maryland, Baltimore, Maryland 21201, United States
| | - Jiayao Chen
- Guanghua School of Stomatology, Sun Yat-sen University & Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, P. R. China
| | - Michael D Weir
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, Maryland 21201, United States
| | - Yan Shu
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Maryland, Baltimore, Maryland 21201, United States
| | - Liang Zhao
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, Maryland 21201, United States.,Department of Orthopedic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Zhengmei Lin
- Guanghua School of Stomatology, Sun Yat-sen University & Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, P. R. China
| | - Hockin H K Xu
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, Maryland 21201, United States.,Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine, Baltimore, Maryland 21201, United States.,Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, Maryland 21201, United States
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19
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Tissue Engineering Approaches for Enamel, Dentin, and Pulp Regeneration: An Update. Stem Cells Int 2020; 2020:5734539. [PMID: 32184832 PMCID: PMC7060883 DOI: 10.1155/2020/5734539] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 01/07/2020] [Indexed: 12/12/2022] Open
Abstract
Stem/progenitor cells are undifferentiated cells characterized by their exclusive ability for self-renewal and multilineage differentiation potential. In recent years, researchers and investigations explored the prospect of employing stem/progenitor cell therapy in regenerative medicine, especially stem/progenitor cells originating from the oral tissues. In this context, the regeneration of the lost dental tissues including enamel, dentin, and the dental pulp are pivotal targets for stem/progenitor cell therapy. The present review elaborates on the different sources of stem/progenitor cells and their potential clinical applications to regenerate enamel, dentin, and the dental pulpal tissues.
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20
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Ono R, Koike N, Inokawa H, Tsuchiya Y, Umemura Y, Yamamoto T, Kanamura N, Yagita K. Incremental Growth Lines in Mouse Molar Dentin Represent 8-hr Ultradian Rhythm. Acta Histochem Cytochem 2019; 52:93-99. [PMID: 32001947 PMCID: PMC6983372 DOI: 10.1267/ahc.19017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 11/05/2019] [Indexed: 12/16/2022] Open
Abstract
Rhythmic incremental growth lines occur in dental hard tissues of vertebrates, and dentinogenesis in rodent incisors is suggested to be controlled by the 24-hr circadian clock. Rodent incisors continue to grow throughout the animal’s life; however, similar to human teeth, rodent molars stop growing after crown formation. This similarity suggests that the mouse molar is an excellent model to understand the molecular mechanisms underlying growth of human teeth. However, not much is known about the rhythmic dentinogenesis in mouse molars. Here, we investigated the incremental growth lines in mouse molar dentin using tetracycline as the growth marker. The incremental growth lines were observed to be generated at approximately 8-hr intervals in wild-type mice housed under 12:12 hr light-dark conditions. Moreover, the 8-hr rhythmic increments persisted in the wild-type and Bmal1−/− mice housed in constant darkness, where Bmal1−/− mice become behaviorally arrhythmic. These results revealed that the dentinogenesis in mouse molars underlie the ultradian rhythms with around 8-hr periodicity. Further, the circadian clock does not seem to be involved in this process, providing new insight into the mechanisms involved in the tooth growth.
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Affiliation(s)
- Ryutaro Ono
- Department of Physiology and Systems Bioscience, Graduate School of Medicine, Kyoto Prefectural University of Medicine
- Department of Dental Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine
| | - Nobuya Koike
- Department of Physiology and Systems Bioscience, Graduate School of Medicine, Kyoto Prefectural University of Medicine
| | - Hitoshi Inokawa
- Department of Physiology and Systems Bioscience, Graduate School of Medicine, Kyoto Prefectural University of Medicine
| | - Yoshiki Tsuchiya
- Department of Physiology and Systems Bioscience, Graduate School of Medicine, Kyoto Prefectural University of Medicine
| | - Yasuhiro Umemura
- Department of Physiology and Systems Bioscience, Graduate School of Medicine, Kyoto Prefectural University of Medicine
| | - Toshiro Yamamoto
- Department of Dental Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine
| | - Narisato Kanamura
- Department of Dental Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine
| | - Kazuhiro Yagita
- Department of Physiology and Systems Bioscience, Graduate School of Medicine, Kyoto Prefectural University of Medicine
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21
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Is There a Noninvasive Source of MSCs Isolated with GMP Methods with Better Osteogenic Potential? Stem Cells Int 2019; 2019:7951696. [PMID: 31781247 PMCID: PMC6875366 DOI: 10.1155/2019/7951696] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 08/11/2019] [Accepted: 09/11/2019] [Indexed: 12/31/2022] Open
Abstract
Background A new trend in the treatment for alveolar clefts in patients with cleft lip and palate involves the use of bone tissue engineering strategies to reduce or eliminate the morbidity associated with autologous bone grafting. The use of mesenchymal stem cells—autologous cells obtained from tissues such as bone marrow and fat—combined with various biomaterials has been proposed as a viable option for use in cleft patients. However, invasive procedures are necessary to obtain the mesenchymal stem cells from these two sources. To eliminate donor site morbidity, noninvasive stem cell sources such as the umbilical cord, orbicularis oris muscle, and deciduous dental pulp have been studied for use in alveolar cleft bone tissue engineering. In this study, we evaluate the osteogenic potential of these various stem cell types. Methods Ten cellular strains obtained from each different source (umbilical cord, orbicularis oris muscle, or deciduous dental pulp) were induced to osteogenic differentiation in vitro, and the bone matrix deposition of each primary culture was quantified. To evaluate whether greater osteogenic potential of the established mesenchymal stem cell strains was associated with an increase in the expression profile of neural crest genes, real-time qPCR was performed on the following genes: SRY-box 9, SRY-box 10, nerve growth factor receptor, transcription factor AP-2 alpha, and paired box 3. Results The mesenchymal stem cells obtained from deciduous dental pulp and orbicularis oris muscle demonstrated increased osteogenic potential with significantly more extracellular bone matrix deposition when compared to primary cultures obtained from the umbilical cord after twenty-one days in culture (p = 0.007 and p = 0.005, respectively). The paired box 3 gene was more highly expressed in the MSCs obtained from deciduous dental pulp and orbicularis oris muscle than in those obtained from the umbilical cord. Conclusion These results suggest that deciduous dental pulp and orbicularis oris muscle stem cells demonstrate superior osteogenic differentiation potential relative to umbilical cord-derived stem cells and that this increased potential is related to their neural crest origins. Based on these observations, and the distinct translational advantage of incorporating stem cells from noninvasive tissue sources into tissue engineering protocols, greater study of these specific cell lines in the setting of alveolar cleft repair is indicated.
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22
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Ramenzoni LL, Russo G, Moccia MD, Attin T, Schmidlin PR. Periodontal bacterial supernatants modify differentiation, migration and inflammatory cytokine expression in human periodontal ligament stem cells. PLoS One 2019; 14:e0219181. [PMID: 31269072 PMCID: PMC6609032 DOI: 10.1371/journal.pone.0219181] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 06/18/2019] [Indexed: 12/17/2022] Open
Abstract
Periodontal ligament stem cells (PDLSC) play an important role in periodontal tissue homeostasis/turnover and could be applied in cell-based periodontal regenerative therapy. Bacterial supernatants secreted from diverse periodontal bacteria induce the production of cytokines that contribute to local periodontal tissue destruction. However, little is known about the impact of whole bacterial toxins on the biological behavior of PDLSC. Therefore this study investigated whether proliferation, migration, inflammatory cytokines expression and transcriptional profile would be affected by exposure to endotoxins from bacterial species found in the subgingival plaque. PDLSC were cultured with the following bacterial supernatants: S. mutans, S. anginosus, P. intermedia, F. nucleatum, P. gingivalis and T. denticola. These supernatants were prepared in dilutions of 1:1000, 1:500, 1:300 and 1:50. Using quantitative RT-PCR, gene expression of selected inflammatory cytokines (IL-6, IL-8 and IL-1β) and cell-surface receptors (TLR2, TLR4) showed upregulation of ≈2.0- to 3.0-fold, when exposed to P. intermedia, F. nucleatum, P. gingivalis and T. denticola. However, supernatants did not affect proliferation (MTT) and migration (wound scratch assays) of PDLSC. Next generation RNA sequencing confirmed modified lineage commitment of PDLSC by stimulating chondrogenesis, adipogenesis and inhibition of osteogenesis under P. gingivalis supernatant treatment compared to control. Taken together, this study shows stem cell immunomodulatory response to different periodontal bacteria supernatant and suggests that stem cell transcriptional capacity, migration/proliferation and osteogenesis may differ in the presence of those pathogens. These results bring into question stem cell contribution to periodontal tissue regeneration and onset of inflammation.
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Affiliation(s)
- Liza L. Ramenzoni
- Clinic of Conservative and Preventive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
- Laboratory of Applied Periodontal and Peri-implantitis Sciences, Clinic of Conservative and Preventive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Giancarlo Russo
- Functional Genomics Center Zurich, ETH, University of Zurich, Zurich, Switzerland
| | - Maria D. Moccia
- Functional Genomics Center Zurich, ETH, University of Zurich, Zurich, Switzerland
| | - Thomas Attin
- Clinic of Conservative and Preventive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Patrick R. Schmidlin
- Clinic of Conservative and Preventive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
- Laboratory of Applied Periodontal and Peri-implantitis Sciences, Clinic of Conservative and Preventive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
- * E-mail:
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23
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New Insights on Properties and Spatial Distributions of Skeletal Stem Cells. Stem Cells Int 2019; 2019:9026729. [PMID: 31281389 PMCID: PMC6589297 DOI: 10.1155/2019/9026729] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 05/13/2019] [Indexed: 02/06/2023] Open
Abstract
Skeletal stem cells (SSCs) are postnatal self-renewing, multipotent, and skeletal lineage-committed progenitors that are capable of giving rise to cartilage, bone, and bone marrow stroma including marrow adipocytes and stromal cells in vitro and in an exogenous environment after transplantation in vivo. Identifying and isolating defined SSCs as well as illuminating their spatiotemporal properties contribute to our understating of skeletal biology and pathology. In this review, we revisit skeletal stem cells identified most recently and systematically discuss their origin and distributions.
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24
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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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25
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Jafar H, Abuarqoub D, Ababneh N, Hasan M, Al-Sotari S, Aslam N, Kailani M, Ammoush M, Shraideh Z, Awidi A. hPL promotes osteogenic differentiation of stem cells in 3D scaffolds. PLoS One 2019; 14:e0215667. [PMID: 31063489 PMCID: PMC6504042 DOI: 10.1371/journal.pone.0215667] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 04/05/2019] [Indexed: 01/09/2023] Open
Abstract
Human platelet lysate (hPL) has been considered as the preferred supplement for the xeno-free stem cell culture for many years. However, the biological effect of hPL on the proliferation and differentiation of dental stem cells combined with the use of medical grade synthetic biomaterial is still under investigation. Thus, the optimal scaffold composition, cell type and specific growth conditions, yet need to be formulated. In this study, we aimed to investigate the regenerative potential of dental stem cells seeded on synthetic scaffolds and maintained in osteogenic media supplemented with either hPL or xeno-derived fetal bovine serum (FBS). Two types of dental stem cells were isolated from human impacted third molars and intact teeth; stem cells of apical papilla (SCAP) and periodontal ligament stem cells (PDLSCs). Cells were expanded in cell culture media supplemented with either hPL or FBS. Consequently, proliferative capacity, immunophenotypic characteristics and multilineage differentiation potential of the derived cells were evaluated on monolayer culture (2D) and on synthetic scaffolds fabricated from poly ’lactic-co-glycolic’ acid (PLGA) (3D). The functionality of the induced cells was examined by measuring the concentration of osteogenic markers ALP, OCN and OPN at different time points. Our results indicate that the isolated dental stem cells showed similar mesenchymal characteristics when cultured on hPL or FBS-containing culture media. Scanning electron microscopy (SEM) and H&E staining revealed the proper adherence of the derived cells on the 3D scaffold cultures. Moreover, the increase in the concentration of osteogenic markers proved that hPL was able to produce functional osteoblasts in both culture conditions (2D and 3D), in a way similar to FBS culture. These results reveal that hPL provides a suitable substitute to the animal-derived serum, for the growth and functionality of both SCAP and PDLSCs. Thus the use of hPL, in combination with PLGA scaffolds, can be useful in future clinical trials for dental regeneration.
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Affiliation(s)
- Hanan Jafar
- Cell Therapy Center, The University of Jordan, Amman, Jordan
- School of Medicine, The University of Jordan, Amman, Jordan
| | - Duaa Abuarqoub
- Cell Therapy Center, The University of Jordan, Amman, Jordan
| | - Nidaa Ababneh
- Cell Therapy Center, The University of Jordan, Amman, Jordan
| | - Maram Hasan
- Cell Therapy Center, The University of Jordan, Amman, Jordan
| | | | - Nazneen Aslam
- Cell Therapy Center, The University of Jordan, Amman, Jordan
| | - Mohammed Kailani
- Department of Chemistry, School of Sciences, The University of Jordan, Amman, Jordan
| | - Mohammed Ammoush
- Dental Department, King Hussein Medical Center (KHMC), Royal Medical Service, Amman, Jordan
| | - Ziad Shraideh
- Department of Biological Sciences, School of Sciences, The University of Jordan, Amman, Jordan
| | - Abdalla Awidi
- Cell Therapy Center, The University of Jordan, Amman, Jordan
- School of Medicine, The University of Jordan, Amman, Jordan
- * E-mail:
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26
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Abstract
Deviations from the precisely coordinated programme of human head development can lead to craniofacial and orofacial malformations often including a variety of dental abnormalities too. Although the aetiology is still unknown in many cases, during the last decades different intracellular signalling pathways have been genetically linked to specific disorders. Among these pathways, the RAS/extracellular signal-regulated kinase (ERK) signalling cascade is the focus of this review since it encompasses a large group of genes that when mutated cause some of the most common and severe developmental anomalies in humans. We present the components of the RAS/ERK pathway implicated in craniofacial and orodental disorders through a series of human and animal studies. We attempt to unravel the specific molecular targets downstream of ERK that act on particular cell types and regulate key steps in the associated developmental processes. Finally we point to ambiguities in our current knowledge that need to be clarified before RAS/ERK-targeting therapeutic approaches can be implemented.
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27
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Titanium Surface Properties Influence the Biological Activity and FasL Expression of Craniofacial Stromal Cells. Stem Cells Int 2019; 2019:4670560. [PMID: 30733806 PMCID: PMC6348805 DOI: 10.1155/2019/4670560] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 10/21/2018] [Indexed: 12/31/2022] Open
Abstract
Mesenchymal stromal cells (MSCs) can be easily isolated form craniofacial bones during routine dentistry procedures. Due to their embryological origin from neural crest, they represent a suitable cell population to study cell-biomaterial interaction in the craniofacial field, including osteoinductive/osteointegrative processes. The biological and immunomodulatory properties of MSCs may be influenced by chemistry and topography of implant surfaces. We investigated if and how three different titanium surfaces, machined (MCH), sandblasted with resorbable blasting medium (RBM), and Ca++-nanostructured (NCA), may affect biological activity, osseointegration, and immunomodulatory properties of craniofacial MSCs. Cell proliferation, morphology, osteogenic markers, and FasL were evaluated on MSCs isolated from the mandibular bone after seeding on these three different surfaces. No statistically significant differences in cell proliferation were observed whereas different morphologies and growth patterns were detected for each type of surface. No difference in the expression of osteogenic markers was revealed. Interestingly, FasL expression, involved in the immunomodulatory activity of stem cells, was influenced by surface properties. Particularly, immunofluorescence analysis indicated that FasL expression increased on MCH surface compared to the others confirming the suggested role of FasL in promoting osteogenic differentiation. Titanium surface treatments and topography might reflect different biological behaviours of craniofacial MSCs and influence their osseointegration/immunomodulation properties.
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28
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Mendi A, Ulutürk H, Ataç MS, Yılmaz D. Stem Cells for the Oromaxillofacial Area: Could they be a promising source for regeneration in dentistry? ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1144:101-121. [PMID: 30725365 DOI: 10.1007/5584_2018_327] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Oromaxillofacial tissues (OMT) are composed of tooth and bone, together with nerves and blood vessels. Such a composite material is a huge source for mesenchymal stem cells (MSCs) that can be obtained with ease from extracted teeth, teeth structures and socket blood, flapped gingiva tissue, and mandibular/maxillar bone marrow. They offer a biological answer for restoring damaged dental tissues such as the regeneration of alveolar bone, prevention of pulp tissue defects, and dental structures. Dental tissue-derived mesenchymal stem cells share properties with bone marrow-derived mesenchymal stem cells and there is a considerable potential for these cells to be used in different stem cell-based therapies, such as bone and nerve regeneration. Dental pulp tissue might be a very good source for neurological disorders whereas gingiva-derived mesenchymal stem cells could be a good immune modulatory/suppressive mediators. OMT-MSCs is also promising candidates for regeneration of orofacial tissues from the perspective of developmental fate. Here, we review the fundamental biology and potential for future regeneration strategies of MSCs in oromaxillofacial research.
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Affiliation(s)
- Ayşegül Mendi
- Faculty of Dentistry, Department of Basic Sciences, Gazi University, Ankara, Turkey.
| | - Hacer Ulutürk
- Faculty of Dentistry, Department of Oral and Maxillofacial Surgery, Gazi University, Ankara, Turkey
| | - Mustafa Sancar Ataç
- Faculty of Dentistry, Department of Oral and Maxillofacial Surgery, Gazi University, Ankara, Turkey
| | - Derviş Yılmaz
- Faculty of Dentistry, Department of Oral and Maxillofacial Surgery, Gazi University, Ankara, Turkey
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29
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Zheng J, Nie X, He L, Yoon A, Wu L, Zhang X, Vats M, Schiff M, Xiang L, Tian Z, Ling J, Mao J. Epithelial Cdc42 Deletion Induced Enamel Organ Defects and Cystogenesis. J Dent Res 2018; 97:1346-1354. [PMID: 29874522 PMCID: PMC6199676 DOI: 10.1177/0022034518779546] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Cdc42, a Rho family small GTPase, regulates cytoskeleton organization, vesicle trafficking, and other cellular processes in development and homeostasis. However, Cdc42's roles in prenatal tooth development remain elusive. Here, we investigated Cdc42 functions in mouse enamel organ. Cdc42 showed highly dynamic temporospatial patterns in the developing enamel organ, with robust expression in the outer enamel epithelium, stellate reticulum (SR), and stratum intermedium layers. Strikingly, epithelium-specific Cdc42 deletion resulted in cystic lesions in the enamel organ. Cystic lesions were first noted at embryonic day 15.5 and progressively enlarged during gestation. At birth, cystic lesions occupied the bulk of the entire enamel organ, with intracystic erythrocyte accumulation. Ameloblast differentiation was retarded upon epithelial Cdc42 deletion. Apoptosis occurred in the Cdc42 mutant enamel organ prior to and synchronously with cystogenesis. Transmission electron microscopy examination showed disrupted actin assemblies, aberrant desmosomes, and significantly fewer cell junctions in the SR cells of Cdc42 mutants than littermate controls. Autophagosomes were present in the SR cells of Cdc42 mutants relative to the virtual absence of autophagosome in the SR cells of littermate controls. Epithelium-specific Cdc42 deletion attenuated Wnt/β-catenin and Shh signaling in dental epithelium and induced aberrant Sox2 expression in the secondary enamel knot. These findings suggest that excessive cell death and disrupted cell-cell connections may be among multiple factors responsible for the observed cystic lesions in Cdc42 mutant enamel organs. Taken together, Cdc42 exerts multidimensional and pivotal roles in enamel organ development and is particularly required for cell survival and tooth morphogenesis.
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Affiliation(s)
- J. Zheng
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
- Department of Orthodontics, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - X. Nie
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - L. He
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - A.J. Yoon
- Oral and Maxillofacial Pathology Division, College of Dental Medicine, Columbia University, New York, NY, USA
| | - L. Wu
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Department of Orthodontics, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - X. Zhang
- Departments of Ophthalmology, Pathology, and Cell Biology, Columbia University, New York, NY, USA
| | - M. Vats
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - M.D. Schiff
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - L. Xiang
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
- Department of Orthodontics, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Z. Tian
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - J. Ling
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - J.J. Mao
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
- Department of Pathology and Cell Biology, College of Physicians and Surgeons, Columbia University, New York, NY, USA
- Department of Orthopedic Surgery, College of Physicians and Surgeons, Columbia University, New York, NY, USA
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30
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He L, Kim SG, Gong Q, Zhong J, Wang S, Zhou X, Ye L, Ling J, Mao JJ. Regenerative Endodontics for Adult Patients. J Endod 2018; 43:S57-S64. [PMID: 28844305 DOI: 10.1016/j.joen.2017.06.012] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The goal of endodontics is to save teeth. Since inception, endodontic treatments are performed to obturate disinfected root canals with inert materials such as gutta-percha. Although teeth can be saved after successful endodontic treatments, they are devitalized and therefore susceptible to reinfections and fractures. The American Association of Endodontists (AAE) has made a tremendous effort to revitalize disinfected immature permanent teeth in children and adolescents with diagnoses including pulp necrosis or apical periodontitis. The American Dental Association (ADA) in 2011 issued several clinical codes for regenerative endodontic procedures or apical revascularization in necrotic immature permanent teeth in children and adolescents. These AAE and ADA initiatives have stimulated robust interest in devising a multitude of tissue engineering approaches for dental pulp and dentin regeneration. Can the concept of regenerative endodontics be extended to revitalize mature permanent teeth with diagnoses including irreversible pulpitis and/or pulp necrosis in adults? The present article was written not only to summarize emerging findings to revitalize mature permanent teeth in adult patients but also to identify challenges and strategies that focus on realizing the goal of regenerative endodontics in adults. We further present clinical cases and describe the biological basis of potential regenerative endodontic procedures in adults. This article explores the frequently asked question if regenerative endodontic therapies should be developed for dental pulp and/or dentin regeneration in adults, who consist of the great majority of endodontic patients.
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Affiliation(s)
- Ling He
- Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Columbia University Medical Center, Center for Craniofacial Regeneration, New York, NY
| | - Sahng G Kim
- Division of Endodontics, College of Dental Medicine, Columbia University, New York, New York
| | - Qimei Gong
- Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Columbia University Medical Center, Center for Craniofacial Regeneration, New York, NY
| | - Juan Zhong
- Columbia University Medical Center, Center for Craniofacial Regeneration, New York, NY; State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Sainan Wang
- Columbia University Medical Center, Center for Craniofacial Regeneration, New York, NY; Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Xuedong Zhou
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Ling Ye
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Junqi Ling
- Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China.
| | - Jeremy J Mao
- Columbia University Medical Center, Center for Craniofacial Regeneration, New York, NY.
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Peng W, Deng W, Zhang J, Pei G, Rong Q, Zhu S. Long noncoding RNA ANCR suppresses bone formation of periodontal ligament stem cells via sponging miRNA-758. Biochem Biophys Res Commun 2018; 503:815-821. [PMID: 29913147 DOI: 10.1016/j.bbrc.2018.06.081] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 06/15/2018] [Indexed: 12/14/2022]
Abstract
Long noncoding RNAs (lncRNAs) were proposed to be important regulators influencing various differentiation processes. Yet, the molecular mechanisms of lncRNAs governing osteogenic differentiation of Periodontal Ligament Stem Cells (PDLSCs) remain unclear. Here, PDLSCs were isolated from normal periodontal ligament of human (PDL) whereas P-PDLSCs were isolated from periodontitis affected PDL. Quantitative real-time PCR (qRT-PCR) was performed to examine the relative expression level of lncRNA-ANCR and of Osterix (OSX), Alkaline Phosphatase (ALP) as well as Runt-related transcription factor 2 (RUNX2) in PDLSCs. Gain- and loss-of- function experiments was performed to study the role of lncRNA-ANCR. Alizarin Red staining was used to evaluate the function of lncRNA-ANCR and miRNA-758 on osteogenic differentiation. In addition, via dual luciferase reporter assay and RNA immunoprecipitation the microRNA sponge potential of lncRNA-ANCR was assessed. A luciferase reporter assay identified the correlation between miR-758 and Notch2. Our results showed that the expression of ALP, RUNX2 and OSX were increased whereas lncRNA-ANCR was decreased during the process of differentiation in PDLSCs. Overexpression of lncRNA-ANCR decreased the expression of ALP, RUNX2 and OSX as confirmed by Alizarin red staining. Overexpression of lncRNA-ANCR resulted in reduction of the miR-758 expression level. Furthermore, RNA immunoprecipitation proved that lncRNA-ANCR targets miR-758 directly. The results of dual luciferase reporter assay also demonstrated that miR-758 regulated Notch2 expression by targeting 3'-UTR of Notch2. In conclusion, the novel pathway lncRNA-ANCR/miR-758/Notch2 plays an important role in the process of regulating osteogenic differentiation of PDLSCs.
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Affiliation(s)
- Wei Peng
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, PR China; Guangdong Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, PR China
| | - Wei Deng
- Department of Oral and Maxillofacial Surgery, Hainan General Hospital, Haikou, PR China
| | - Jing Zhang
- Department of Stomatology, Clifford Hospital, Guangzhou University of Chinese Medicine, PR China
| | - Gengwang Pei
- Otolaryngology-Head and Neck Surgery, Sun Yat-sen University, Guangzhou, PR China
| | - Qiong Rong
- Department of Stomatology, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, PR China
| | - Shuangxi Zhu
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, PR China; Guangdong Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, PR China.
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32
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Peng W, Zhu S, Wang J, Chen L, Weng J, Chen S. Lnc-NTF3-5 promotes osteogenic differentiation of maxillary sinus membrane stem cells via sponging miR-93-3p. Clin Implant Dent Relat Res 2018; 20:110-121. [PMID: 29106055 PMCID: PMC5947825 DOI: 10.1111/cid.12553] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 10/03/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND The function and the mechanism of long non-coding RNAs (lncRNAs) on the osteogenic differentiation of maxillary sinus membrane stem cells (MSMSCs) remain largely unknown. MATERIALS AND METHODS The expression of lnc-NTF3-5 and Runt-related transcription factor 2 (RUNX2), Osterix (OSX), and Alkaline Phosphatase (ALP) was examined by quantitative real-time PCR (qRT-PCR) in MSMSCs during the process osteogenic differentiation. Then the function of lnc-NTF3-5 was evaluated by loss- and gain-of-function techniques, as well as qRT-PCR, western blot, and Alizarin Red staining. In addition, the microRNAs (miRNAs) sponge potential of lnc-NTF3-5 was assessed through RNA immunoprecipitation, dual luciferase reporter assay, and in vivo ectopic bone formation. RESULTS Lnc-NTF3-5, RUNX2, OSX, and ALP increased alone with the differentiation. Inhibition of lnc-NTF3-5 decreased the expression of RUNX2, OSX, and ALP both at mRNA and protein levels. Alizarin red staining showed similar trend. In contrast, overexpression of lnc-NTF3-5 presented totally opposite effects. Besides, overexpression of lnc-NTF3-5 could decrease the expression of microRNA-93-3p (miR-93-3p). Enhance miR-93-3p could also inhibit the expression level of lnc-NTF3-5. RNA immunoprecipitation demonstrated that lnc-NTF3-5 is directly bound to miR-93-3p and dual luciferase reporter assay proved that miR-93-3p targets 3' UTR of RUNX2 to regulate its expression. Ultimately, in vivo bone formation study showed that lnc-NTF3-5 and miR-93-3p inhibitor co-transfection group displayed the strongest bone formation. CONCLUSIONS The novel pathway lnc-NTF3-5/miR-93-3p/RUNX2 could regulate osteogenic differentiation of MSMSCs and might serve as a therapeutic target for bone regeneration in the posterior maxilla.
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Affiliation(s)
- Wei Peng
- Department of Oral and Maxillofacial SurgeryThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhouChina
- Guangdong Key Laboratory of StomatologySun Yat‐sen UniversityGuangzhouChina
| | - Shuang‐Xi Zhu
- Department of Oral and Maxillofacial SurgeryThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhouChina
- Guangdong Key Laboratory of StomatologySun Yat‐sen UniversityGuangzhouChina
| | - Jin Wang
- Department of Oral and Maxillofacial SurgeryThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhouChina
- Guangdong Key Laboratory of StomatologySun Yat‐sen UniversityGuangzhouChina
| | - Li‐Li Chen
- Department of PathologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhouChina
| | - Jun‐Quan Weng
- Department of Oral and Maxillofacial SurgeryThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhouChina
- Department of StomatologyShenzhen People's Hospital, Second Clinical Medical School, Jinan UniversityShenzhenChina
| | - Song‐Ling Chen
- Department of Oral and Maxillofacial SurgeryThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhouChina
- Guangdong Key Laboratory of StomatologySun Yat‐sen UniversityGuangzhouChina
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Ishida K, Mitsui T. Role of the boundary in feather bud formation on one-dimensional bioengineered skin. APL Bioeng 2018; 2:016107. [PMID: 31069292 PMCID: PMC6481706 DOI: 10.1063/1.4989414] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 12/21/2017] [Indexed: 01/04/2023] Open
Abstract
The role of a boundary in pattern formation from a homogenous state in Turing's reaction–diffusion equations is important, particularly when the domain size is comparable to the pattern scale. Such experimental conditions may be achieved for in vitro regeneration of ectodermal appendages such as feathers, via reconstruction of embryonic single cells. This procedure can eliminate a predefined genetic map, such as the midline of chick feather bud formation, leaving uniformly distributed identical cells as a bioengineered skin. Here, the self-organizing nature of multiple feather bud formation was examined in bioengineered 1D-skin samples. Primal formation of feather buds occurred at a fixed length from the skin edge. This formation was numerically recapitulated by a standard two-component reaction-diffusion model, suggesting that the boundary effect caused this observation. The proper boundary conditions were nonstandard, either mixed Dirichlet–Neumann or partial-flux. In addition, the model implies imperfect or hindered bud formation as well as nearly equal distances between buds. In contrast, experimental observations indicated that the skin curvature, which was not included in our model, also strongly affected bud formation. Thus, bioengineered skin may provide an ideal template for modeling a self-organized process from a homogenous state. This study will examine the possible diffusion activities of activator or inhibitor molecular candidates and mechanical activities during cell aggregation, which will advance our understanding of skin appendage regeneration from pluripotent or embryonic stem cells.
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Affiliation(s)
- Kentaro Ishida
- Department of Physics and Mathematics, College of Science and Engineering, Aoyama Gakuin University, Kanagawa 252-5258, Japan
| | - Toshiyuki Mitsui
- Department of Physics and Mathematics, College of Science and Engineering, Aoyama Gakuin University, Kanagawa 252-5258, Japan
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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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35
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Eramo S, Natali A, Pinna R, Milia E. Dental pulp regeneration via cell homing. Int Endod J 2017; 51:405-419. [PMID: 29047120 DOI: 10.1111/iej.12868] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 10/14/2017] [Indexed: 12/11/2022]
Abstract
The typical treatment for irreversibly inflamed/necrotic pulp tissue is root canal treatment. As an alternative approach, regenerative endodontics aims to regenerate dental pulp-like tissues using two possible strategies: cell transplantation and cell homing. The former requires exogenously transplanted stem cells, complex procedures and high costs; the latter employs the host's endogenous cells to achieve tissue repair/regeneration, which is more clinically translatable. This systematic review examines cell homing for dental pulp regeneration, selecting articles on in vitro experiments, in vivo ectopic transplantation models and in situ pulp revascularization. MEDLINE/PubMed and Scopus databases were electronically searched for articles without limits in publication date. Two reviewers independently screened and included papers according to the predefined selection criteria. The electronic searches identified 46 studies. After title, abstract and full-text examination, 10 articles met the inclusion criteria. In vitro data highlighted that multiple cytokines have the capacity to induce migration, proliferation and differentiation of dental pulp stem/progenitor cells. The majority of the in vivo studies obtained regenerated connective pulp-like tissues with neovascularization. In some cases, the samples showed new innervation and new dentine deposition. The in situ pulp revascularization regenerated intracanal pulp-like tissues with neovascularization, innervation and dentine formation. Cell homing strategies for pulp regeneration need further understanding and improvement if they are to become a reliable and effective approach in endodontics. Nevertheless, cell homing currently represents the most clinically viable pathway for dental pulp regeneration.
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Affiliation(s)
- S Eramo
- Department of Surgery and Biomedical Sciences, University of Perugia, Perugia, Italy
| | - A Natali
- Department of Surgery and Biomedical Sciences, University of Perugia, Perugia, Italy
| | - R Pinna
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
| | - E Milia
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
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36
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Zhang M, Jiang F, Zhang X, Wang S, Jin Y, Zhang W, Jiang X. The Effects of Platelet-Derived Growth Factor-BB on Human Dental Pulp Stem Cells Mediated Dentin-Pulp Complex Regeneration. Stem Cells Transl Med 2017; 6:2126-2134. [PMID: 29064632 PMCID: PMC5702518 DOI: 10.1002/sctm.17-0033] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 09/05/2017] [Indexed: 12/12/2022] Open
Abstract
Dentin‐pulp complex regeneration is a promising alternative treatment for the irreversible pulpitis caused by tooth trauma or dental caries. This process mainly relies on the recruitment of endogenous or the transplanted dental pulp stem cells (DPSCs) to guide dentin‐pulp tissue formation. Platelet‐derived growth factor (PDGF), a well‐known potent mitogenic, angiogenic, and chemoattractive agent, has been widely used in tissue regeneration. However, the mechanisms underlying the therapeutic effects of PDGF on dentin‐pulp complex regeneration are still unclear. In this study, we tested the effect of PDGF‐BB on dentin‐pulp tissue regeneration by establishing PDGF‐BB gene‐modified human dental pulp stem cells (hDPSCs) using a lentivirus. Our results showed that PDGF‐BB can significantly enhance hDPSC proliferation and odontoblastic differentiation. Furthermore, PDGF‐BB and vascular endothelial growth factor (VEGF) secreted by hDPSCs enhanced angiogenesis. The chemoattractive effect of PDGF‐BB on hDPSCs was also confirmed using a Transwell chemotactic migration model. We further determined that PDGF‐BB facilitates hDPSCs migration via the activation of the phosphatidylinositol 3 kinase (PI3K)/Akt signaling pathway. In vivo, CM‐DiI‐labeled hDPSCs were injected subcutaneously into mice, and our results showed that more labeled cells were recruited to the sites implanted with calcium phosphate cement scaffolds containing PDGF‐BB gene‐modified hDPSCs. Finally, the tissue‐engineered complexes were implanted subcutaneously in mice for 12 weeks, the Lenti‐PDGF group generated more dentin‐like mineralized tissue which showed positive staining for the DSPP protein, similar to tooth dentin tissue, and was surrounded by highly vascularized dental pulp‐like connective tissue. Taken together, our data demonstrated that the PDGF‐BB possesses a powerful function in prompting stem cell‐based dentin‐pulp tissue regeneration. Stem Cells Translational Medicine2017;6:2126–2134
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Affiliation(s)
- Maolin Zhang
- Department of Prosthodontics, Shanghai, People's Republic of China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, People's Republic of China
| | - Fei Jiang
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, People's Republic of China.,Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Polyclinic, Affiliated Hospital of Stomatology, Nanjing, People's Republic of China
| | - Xiaochen Zhang
- Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, People's Republic of China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, People's Republic of China
| | - Shaoyi Wang
- Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, People's Republic of China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, People's Republic of China
| | - Yuqin Jin
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, People's Republic of China
| | - Wenjie Zhang
- Department of Prosthodontics, Shanghai, People's Republic of China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, People's Republic of China
| | - Xinquan Jiang
- Department of Prosthodontics, Shanghai, People's Republic of China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, People's Republic of China
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37
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Gong AX, Zhang JH, Li J, Wu J, Wang L, Miao DS. Comparison of gene expression profiles between dental pulp and periodontal ligament tissues in humans. Int J Mol Med 2017; 40:647-660. [PMID: 28713908 PMCID: PMC5547970 DOI: 10.3892/ijmm.2017.3065] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 06/16/2017] [Indexed: 01/09/2023] Open
Abstract
There are anatomical and functional differences between human dental pulp (DP) and periodontal ligament (PDL). However, the molecular biological differences and function of these tissues are poorly understood. In the present study, we employed a cDNA microarray array to screen for differentially expressed genes (DEGs) between human DP and PDL tissues, and used the online software WebGestalt to perform the functional analysis of the DEGs. In addition, the STRING database and KEGG pathway analysis were applied for interaction network and pathway analysis of the DEGs. DP and PDL samples were obtained from permanent premolars (n=16) extracted for orthodontic purposes. The results of the microarray assay were confirmed by RT-qPCR. The DEGs were found to be significantly associated with the extracellular matrix and focal adhesion. A total of 10 genes were selected to confirm the results. The mRNA levels of integrin alpha 4 (ITGA4), integrin alpha 8 (ITGA8), neurexin 1 (NRXN1) and contactin 1 (CNTN1) were significantly higher in the DP than in the PDL tissues. However, the levels of collagen type XI alpha 1 (COL11A1), aggrecan (ACAN), collagen type VI alpha 1 (COL6A1), chondroadherin (CHAD), laminin gamma 2 (LAMC2) and laminin alpha 3 (LAMA3) were higher in the PDL than in the DP samples. The gene expression profiles provide novel insight into the characterization of DP and PDL tissues, and contribute to our understanding of the potential molecular mechanisms of dental tissue mineralization and regeneration.
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Affiliation(s)
- Ai-Xiu Gong
- Department of Stomatology, Children's Hospital of Nanjing Medical University, Nanjing, Jiangsu 210008, P.R. China
| | - Jing-Han Zhang
- Department of Neonatology, Children's Hospital of Nanjing Medical University, Nanjing, Jiangsu 210008, P.R. China
| | - Jing Li
- Department of Stomatology, Children's Hospital of Nanjing Medical University, Nanjing, Jiangsu 210008, P.R. China
| | - Jun Wu
- State Key Laboratory of Reproductive Medicine, The Research Center for Bone and Stem Cells, Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Lin Wang
- Jiangsu Key Laboratory of Oral Diseases, Department of Orthodontics, School of Stomatology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Deng-Shun Miao
- State Key Laboratory of Reproductive Medicine, The Research Center for Bone and Stem Cells, Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
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38
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Chen W, Liu X, Chen Q, Bao C, Zhao L, Zhu Z, Xu HHK. Angiogenic and osteogenic regeneration in rats via calcium phosphate scaffold and endothelial cell co-culture with human bone marrow mesenchymal stem cells (MSCs), human umbilical cord MSCs, human induced pluripotent stem cell-derived MSCs and human embryonic stem cell-derived MSCs. J Tissue Eng Regen Med 2017; 12:191-203. [PMID: 28098961 DOI: 10.1002/term.2395] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 10/03/2016] [Accepted: 01/09/2017] [Indexed: 02/05/2023]
Abstract
Angiogenesis is a limiting factor in regenerating large bone defects. The objective of this study was to investigate angiogenic and osteogenic effects of co-culture on calcium phosphate cement (CPC) scaffold using human umbilical vein endothelial cells (hUVECs) and mesenchymal stem cells (MSCs) from different origins for the first time. hUVECs were co-cultured with four types of cell: human umbilical cord MSCs (hUCMSCs), human bone marrow MSCs (hBMSCs) and MSCs from induced pluripotent stem cells (hiPSC-MSCs) and embryonic stem cells (hESC-MSCs). Constructs were implanted in 8 mm cranial defects of rats for 12 weeks. CPC without cells served as control 1. CPC with hBMSCs served as control 2. Microcapillary-like structures were successfully formed on CPC in vitro in all four co-cultured groups. Microcapillary lengths increased with time (p < 0.05). Osteogenic and angiogenic gene expressions were highly elevated and mineralization by co-cultured cells increased with time (p < 0.05). New bone amount and blood vessel density of co-cultured groups were much greater than controls (p < 0.05) in an animal study. hUVECs co-cultured with hUCMSCs, hiPSC-MSCs and hESC-MSCs achieved new bone and vessel density similar to hUVECs co-cultured with hBMSCs (p > 0.1). Therefore, hUCMSCs, hiPSC-MSCs and hESC-MSCs could serve as alternative cell sources to hBMSCs, which require an invasive procedure to harvest. In conclusion, this study showed for the first time that co-cultures of hUVECs with hUCMSCs, hiPSC-MSCs, hESC-MSCs and hBMSCs delivered via CPC scaffold achieved excellent osteogenic and angiogenic capabilities in vivo. The novel co-culture constructs are promising for bone reconstruction with improved angiogenesis for craniofacial/orthopaedic applications. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- Wenchuan Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Biomaterials & Tissue Engineering Division, Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD, USA
| | - Xian Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Biomaterials & Tissue Engineering Division, Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD, USA
| | - Qianmin Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Chongyun Bao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Biomaterials & Tissue Engineering Division, Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD, USA
| | - Liang Zhao
- Biomaterials & Tissue Engineering Division, Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD, USA.,Department of Orthopaedic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Zhimin Zhu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Hockin H K Xu
- Biomaterials & Tissue Engineering Division, Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD, USA.,Center for Stem Cell Biology and Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD, USA.,University of Maryland Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Mechanical Engineering, University of Maryland at Baltimore County, Baltimore County, MD, USA
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Kukolj T, Trivanović D, Djordjević IO, Mojsilović S, Krstić J, Obradović H, Janković S, Santibanez JF, Jauković A, Bugarski D. Lipopolysaccharide can modify differentiation and immunomodulatory potential of periodontal ligament stem cells via ERK1,2 signaling. J Cell Physiol 2017; 233:447-462. [PMID: 28295277 DOI: 10.1002/jcp.25904] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Accepted: 03/09/2017] [Indexed: 12/13/2022]
Abstract
Lipopolysaccharide (LPS) is a pertinent deleterious factor in oral microenvironment for cells which are carriers of regenerative processes. The aim of this study was to investigate the emerging in vitro effects of LPS (Escherichia coli) on human periodontal ligament stem cell (PDLSC) functions and associated signaling pathways. We demonstrated that LPS did not affect immunophenotype, proliferation, viability, and cell cycle of PDLSCs. However, LPS modified lineage commitment of PDLSCs inhibiting osteogenesis by downregulating Runx2, ALP, and Ocn mRNA expression, while stimulating chondrogenesis and adipogenesis by upregulating Sox9 and PPARγ mRNA expression. LPS promoted myofibroblast-like phenotype of PDLSCs, since it significantly enhanced PDLSC contractility, as well as protein and/or gene expression of TGF-β, fibronectin (FN), α-SMA, and NG2. LPS also increased protein and gene expression levels of anti-inflammatory COX-2 and pro-inflammatory IL-6 molecules in PDLSCs. Inhibition of peripheral blood mononuclear cells (MNCs) transendothelial migration in presence of LPS-treated PDLSCs was accompanied by the reduction of CD29 expression within MNCs. However, LPS treatment did not change the inhibitory effect of PDLSCs on mitogen-stimulated proliferation of CD4+ and the ratio of CD4+ CD25high /CD4+ CD25low lymphocytes. LPS-treated PDLSCs did not change the frequency of CD34+ and CD45+ cells, but decreased the frequency of CD33+ and CD14+ myeloid cells within MNCs. Moreover, LPS treatment attenuated the stimulatory effect of PDLSCs on CFC activity of MNCs, predominantly the CFU-GM number. The results indicated that LPS-activated ERK1,2 was at least partly involved in the observed effects on PDLSC differentiation capacity, acquisition of myofibroblastic attributes, and changes of their immunomodulatory features.
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Affiliation(s)
- Tamara Kukolj
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | - Drenka Trivanović
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | - Ivana Okić Djordjević
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | - Slavko Mojsilović
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | - Jelena Krstić
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | - Hristina Obradović
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | | | - Juan Francisco Santibanez
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | - Aleksandra Jauković
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | - Diana Bugarski
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
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40
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Bone marrow mesenchymal stem cells combine with Treated dentin matrix to build biological root. Sci Rep 2017; 7:44635. [PMID: 28401887 PMCID: PMC5388852 DOI: 10.1038/srep44635] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 02/13/2017] [Indexed: 02/05/2023] Open
Abstract
Treated dentin matrix (TDM) as a kind of scaffolding material has been proved odontogenic induction ability on dental-derived stem cells. Given the limited resources of dental stem cells, it is necessary to seek new seed cell which easily obtained. Jaw bone marrow mesenchymal stem cell (JBMMSC) as non-dental-derived stem cell relates to the development of teeth and jaws which suggest us JBMMSCs could act as a new seed cell for tooth tissue engineering. To assess the odontogenic and osteogenic potential of JBMMSCs, cells were induced by TDM extraction in vitro and combined with TDM in vivo. Results were analyzed by PCR, Western Blotting and histology. PCR and Western Blotting showed odontogenic and osteogenic makers were significantly enhanced in varying degrees after induced by TDM extraction in vitro. In vivo, JBMMSCs expressed both odontogenic and osteogenic-related protein, and the latter showed stronger positive expression. Furthermore, histological examination of the harvested grafts was observed the formation of bone-like tissue. Therefore, osteogenic differentiation ability of JBMMSCs were enhanced significantly after being inducted by TDM which illustrates that non-odontogenic derived stem cells are still promising seed cells in tooth root tissue engineering.
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Yang B, Qiu Y, Zhou N, Ouyang H, Ding J, Cheng B, Sun J. Application of Stem Cells in Oral Disease Therapy: Progresses and Perspectives. Front Physiol 2017; 8:197. [PMID: 28421002 PMCID: PMC5376595 DOI: 10.3389/fphys.2017.00197] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 03/16/2017] [Indexed: 12/13/2022] Open
Abstract
Stem cells are undifferentiated and pluripotent cells that can differentiate into specialized cells with a more specific function. Stem cell therapies become preferred methods for the treatment of multiple diseases. Oral and maxillofacial defect is one kind of the diseases that could be most possibly cured by stem cell therapies. Here we discussed oral diseases, oral adult stem cells, iPS cells, and the progresses/challenges/perspectives of application of stem cells for oral disease treatment.
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Affiliation(s)
- Bo Yang
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen UniversityGuangzhou, China
| | - Yi Qiu
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen UniversityGuangzhou, China
| | - Niu Zhou
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen UniversityGuangzhou, China
| | - Hong Ouyang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen UniversityGuangzhou, China
| | - Junjun Ding
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Zhongshan School of Medicine, Sun Yat-Sen UniversityGuangzhou, China
| | - Bin Cheng
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen UniversityGuangzhou, China
| | - Jianbo Sun
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen UniversityGuangzhou, China
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Chen G, Chen J, Yan Z, Li Z, Yu M, Guo W, Tian W. Maternal diabetes modulates dental epithelial stem cells proliferation and self-renewal in offspring through apurinic/apyrimidinicendonuclease 1-mediated DNA methylation. Sci Rep 2017; 7:40762. [PMID: 28094306 PMCID: PMC5240105 DOI: 10.1038/srep40762] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 12/09/2016] [Indexed: 12/16/2022] Open
Abstract
Maternal gestational diabetes mellitus (GDM) has many adverse effects on the development of offspring. Aberrant DNA methylation is a potential mechanism associated with these effects. However, the effects of GDM on tooth development and the underlying mechanisms have not been thoroughly investigated. In the present study, a GDM rat model was established and incisor labial cervical loop tissue and dental epithelial stem cells (DESCs) were harvested from neonates of diabetic and control dams. GDM significantly suppressed incisor enamel formation and DESCs proliferation and self-renewal in offspring. Gene expression profiles showed that Apex1 was significantly downregulated in the offspring of diabetic dams. In vitro, gain and loss of function analyses showed that APEX1 was critical for DESCs proliferation and self-renewal and Oct4 and Nanog regulation via promoter methylation. In vivo, we confirmed that GDM resulted in significant downregulation of Oct4 and Nanog and hypermethylation of their promoters. Moreover, we found that APEX1 modulated DNA methylation by regulating DNMT1 expression through ERK and JNK signalling. In summary, our data suggest that GDM-induced APEX1 downregulation increased DNMT1 expression, thereby inhibiting Oct4 and Nanog expression, through promoter hypermethylation, resulting in suppression of DESCs proliferation and self-renewal, as well as enamel formation.
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Affiliation(s)
- Guoqing Chen
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, 610041, P. R. China.,National Engineering Laboratory for Oral Regenerative Medicine, West China College of Stomatology, Sichuan University, Chengdu, 610041, P. R. China
| | - Jie Chen
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, 610041, P. R. China.,National Engineering Laboratory for Oral Regenerative Medicine, West China College of Stomatology, Sichuan University, Chengdu, 610041, P. R. China.,Department of Oral and Maxillofacial Surgery, West China College of Stomatology, Sichuan University, Chengdu, 610041, P. R. China
| | - Zhiling Yan
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, 610041, P. R. China.,National Engineering Laboratory for Oral Regenerative Medicine, West China College of Stomatology, Sichuan University, Chengdu, 610041, P. R. China.,Department of Oral and Maxillofacial Surgery, West China College of Stomatology, Sichuan University, Chengdu, 610041, P. R. China
| | - Ziyue Li
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, 610041, P. R. China.,National Engineering Laboratory for Oral Regenerative Medicine, West China College of Stomatology, Sichuan University, Chengdu, 610041, P. R. China
| | - Mei Yu
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, 610041, P. R. China.,National Engineering Laboratory for Oral Regenerative Medicine, West China College of Stomatology, Sichuan University, Chengdu, 610041, P. R. China
| | - Weihua Guo
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, 610041, P. R. China.,National Engineering Laboratory for Oral Regenerative Medicine, West China College of Stomatology, Sichuan University, Chengdu, 610041, P. R. China.,Department of Pedodontics, West China College of Stomatology, Sichuan University, No. 14, 3rd Section, Renmin South Road, Chengdu 610041, P. R. China
| | - Weidong Tian
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, 610041, P. R. China.,National Engineering Laboratory for Oral Regenerative Medicine, West China College of Stomatology, Sichuan University, Chengdu, 610041, P. R. China.,Department of Oral and Maxillofacial Surgery, West China College of Stomatology, Sichuan University, Chengdu, 610041, P. R. China
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43
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Hematopoietic Stem Cells in Neural-crest Derived Bone Marrow. Sci Rep 2016; 6:36411. [PMID: 28000662 PMCID: PMC5175267 DOI: 10.1038/srep36411] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 08/31/2016] [Indexed: 12/17/2022] Open
Abstract
Hematopoietic stem cells (HSCs) in the endosteum of mesoderm-derived appendicular bones have been extensively studied. Neural crest-derived bones differ from appendicular bones in developmental origin, mode of bone formation and pathological bone resorption. Whether neural crest-derived bones harbor HSCs is elusive. Here, we discovered HSC-like cells in postnatal murine mandible, and benchmarked them with donor-matched, mesoderm-derived femur/tibia HSCs, including clonogenic assay and long-term culture. Mandibular CD34 negative, LSK cells proliferated similarly to appendicular HSCs, and differentiated into all hematopoietic lineages. Mandibular HSCs showed a consistent deficiency in lymphoid differentiation, including significantly fewer CD229 + fractions, PreProB, ProB, PreB and B220 + slgM cells. Remarkably, mandibular HSCs reconstituted irradiated hematopoietic bone marrow in vivo, just as appendicular HSCs. Genomic profiling of osteoblasts from mandibular and femur/tibia bone marrow revealed deficiencies in several HSC niche regulators among mandibular osteoblasts including Cxcl12. Neural crest derived bone harbors HSCs that function similarly to appendicular HSCs but are deficient in the lymphoid lineage. Thus, lymphoid deficiency of mandibular HSCs may be accounted by putative niche regulating genes. HSCs in craniofacial bones have functional implications in homeostasis, osteoclastogenesis, immune functions, tumor metastasis and infections such as osteonecrosis of the jaw.
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Shah N. A regeneration-based, nonobturation root-canal treatment for fully-mature teeth: Six years' experience with "SealBio". Contemp Clin Dent 2016; 7:296-301. [PMID: 27630490 PMCID: PMC5004539 DOI: 10.4103/0976-237x.188541] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVES To provide scientific evidence on the outcome of a large number of cases treated by SealBio over the longer follow-up period. MATERIALS AND METHODS One hundred and thirty-four teeth in 116 patients presenting with pulp and periapical disease were randomly recruited between 2009 and 2014. SealBio was performed, and cases were followed up at regular intervals up to 6-year. RESULTS Of the total 134 teeth treated, 16 teeth could not be followed up and 9 cases failed (7.62% of cases). In only 4 cases (approximately 3.38% of cases), the failure could be directly attributed to endodontic causes. In the remaining 5 cases, coronal leakage from under the crown margins or dislodged restoration was found after 3-5 years of treatment. CONCLUSIONS SealBio was found to be a successful, nonobturation, regeneration-based endodontic treatment protocol. By cell homing of endogenous stem cells, a biological seal rather than an artificial seal with gutta-percha and sealer cement is possible to achieve. It is highly cost saving and easier to perform, in addition to other advantages, such as retreatment is much simpler, and postcore restoration is possible after SealBio treatment.
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Affiliation(s)
- Naseem Shah
- Department of Dentistry, Hindu Rao Hospital, North Delhi Municipal Corporation Medical College, New Delhi, India
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46
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Innovative Dental Stem Cell-Based Research Approaches: The Future of Dentistry. Stem Cells Int 2016; 2016:7231038. [PMID: 27648076 PMCID: PMC5018320 DOI: 10.1155/2016/7231038] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 06/15/2016] [Accepted: 07/12/2016] [Indexed: 12/30/2022] Open
Abstract
Over the past decade, the dental field has benefited from recent findings in stem cell biology and tissue engineering that led to the elaboration of novel ideas and concepts for the regeneration of dental tissues or entire new teeth. In particular, stem cell-based regenerative approaches are extremely promising since they aim at the full restoration of lost or damaged tissues, ensuring thus their functionality. These therapeutic approaches are already applied with success in clinics for the regeneration of other organs and consist of manipulation of stem cells and their administration to patients. Stem cells have the potential to self-renew and to give rise to a variety of cell types that ensure tissue repair and regeneration throughout life. During the last decades, several adult stem cell populations have been isolated from dental and periodontal tissues, characterized, and tested for their potential applications in regenerative dentistry. Here we briefly present the various stem cell-based treatment approaches and strategies that could be translated in dental practice and revolutionize dentistry.
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47
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Papp T, Polyak A, Papp K, Meszar Z, Zakany R, Meszar-Katona E, Tünde PT, Ham CH, Felszeghy S. Modification of tooth development by heat shock protein 60. Int J Oral Sci 2016; 8:24-31. [PMID: 27025262 PMCID: PMC4822183 DOI: 10.1038/ijos.2015.53] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/30/2015] [Indexed: 12/13/2022] Open
Abstract
Although several heat shock proteins have been investigated in relation to tooth development, no available information is available about the spatial and temporal expression pattern of heat shock protein 60 (Hsp 60). To characterize Hsp 60 expression in the structures of the developing tooth germ, we used Western blotting, immunohistochemistry and in situ hybridization. Hsp 60 was present in high amounts in the inner and outer enamel epithelia, enamel knot (EK) and stratum intermedium (SI). Hsp 60 also appeared in odontoblasts beginning in the bell stage. To obtain data on the possible effect of Hsp 60 on isolated lower incisors from mice, we performed in vitro culturing. To investigate the effect of exogenous Hsp 60 on the cell cycle during culturing, we used the 5-bromo-2-deoxyuridine (BrdU) incorporation test on dental cells. Exogenously administered Hsp 60 caused bluntness at the apical part of the 16.5-day-old tooth germs, but it did not influence the proliferation rate of dental cells. We identified the expression of Hsp 60 in the developing tooth germ, which was present in high concentrations in the inner and outer enamel epithelia, EK, SI and odontoblasts. High concentration of exogenous Hsp 60 can cause abnormal morphology of the tooth germ, but it did not influence the proliferation rate of the dental cells. Our results suggest that increased levels of Hsp 60 may cause abnormalities in the morphological development of the tooth germ and support the data on the significance of Hsp during the developmental processes.
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Affiliation(s)
- Tamas Papp
- Department of Anatomy, Histology, and Embryology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Angela Polyak
- Department of Anatomy, Histology, and Embryology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Krisztina Papp
- Department of Anatomy, Histology, and Embryology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Zoltan Meszar
- Department of Anatomy, Histology, and Embryology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Roza Zakany
- Department of Anatomy, Histology, and Embryology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Eva Meszar-Katona
- Department of Anatomy, Histology, and Embryology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Palne Terdik Tünde
- Department of Anatomy, Histology, and Embryology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Chang Hwa Ham
- Department of Anatomy, Histology, and Embryology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Scoliosis Research Institute, Korea University Guro Hospital, Seoul, Korea
| | - Szabolcs Felszeghy
- Department of Oral Anatomy, Faculty of Dentistry, University of Debrecen, Debrecen, Hungary
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48
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Boddupally K, Wang G, Chen Y, Kobielak A. Lgr5 Marks Neural Crest Derived Multipotent Oral Stromal Stem Cells. Stem Cells 2016; 34:720-31. [PMID: 26865184 DOI: 10.1002/stem.2314] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Revised: 10/09/2015] [Accepted: 11/04/2015] [Indexed: 12/22/2022]
Abstract
It has been suggested that multipotent stem cells with neural crest (NC) origin persist into adulthood in oral mucosa. However their exact localization and role in normal homeostasis is unknown. In this study, we discovered that Lgr5 is expressed in NC cells during embryonic development, which give rise to the dormant stem cells in the adult tongue and oral mucosa. Those Lgr5 positive oral stromal stem cells display properties of NC stem cells including clonal growth and multipotent differentiation. RNA sequencing revealed that adult Lgr5+ oral stromal stem cells express high number of neural crest related markers like Sox9, Twist1, Snai1, Myc, Ets1, Crabp1, Epha2, and Itgb1. Using lineage-tracing experiments, we show that these cells persist more than a year in the ventral tongue and some areas of the oral mucosa and give rise to stromal progeny. In vivo transplantation demonstrated that these cells reconstitute the stroma. Our studies show for the first time that Lgr5 is expressed in the NC cells at embryonic day 9.5 (E9.5) and is maintained during embryonic development and postnataly in the stroma of the ventral tongue, and some areas of the oral mucosa and that Lgr5+ cells participate in the maintenance of the stroma.
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Affiliation(s)
- Keerthi Boddupally
- Department of Otolaryngology, Head & Neck Surgery, University of Southern California, Los Angeles, California, USA.,Department of Biochemistry and Molecular Biology, Norris Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Guangfang Wang
- Department of Otolaryngology, Head & Neck Surgery, University of Southern California, Los Angeles, California, USA.,Department of Biochemistry and Molecular Biology, Norris Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Yibu Chen
- Norris Medical Library, University of Southern California, Los Angeles, California, USA
| | - Agnieszka Kobielak
- Department of Otolaryngology, Head & Neck Surgery, University of Southern California, Los Angeles, California, USA.,Department of Biochemistry and Molecular Biology, Norris Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.,Centre of New Technologies, University of Warsaw, Warsaw, Poland
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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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50
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Martínez CE, González SA, Palma V, Smith PC. Platelet-Poor and Platelet-Rich Plasma Stimulate Bone Lineage Differentiation in Periodontal Ligament Stem Cells. J Periodontol 2016; 87:e18-26. [DOI: 10.1902/jop.2015.150360] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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