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Eldeeb D, Ikeda Y, Hojo H, Ohba S. Unraveling the hidden complexity: Exploring dental tissues through single-cell transcriptional profiling. Regen Ther 2024; 27:218-229. [PMID: 38596822 PMCID: PMC11002530 DOI: 10.1016/j.reth.2024.03.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 03/21/2024] [Accepted: 03/24/2024] [Indexed: 04/11/2024] Open
Abstract
Understanding the composition and function of cells constituting tissues and organs is vital for unraveling biological processes. Single-cell analysis has allowed us to move beyond traditional methods of categorizing cell types. This innovative technology allows the transcriptional and epigenetic profiling of numerous individual cells, leading to significant insights into the development, homeostasis, and pathology of various organs and tissues in both animal models and human samples. In this review, we delve into the outcomes of major investigations using single-cell transcriptomics to decipher the cellular composition of mammalian teeth and periodontal tissues. The recent single-cell transcriptome-based studies have traced in detail the dental epithelium-ameloblast lineage and dental mesenchyme lineages in the mouse incisors and the tooth germ of both mice and humans; unraveled the microenvironment, the identity of niche cells, and cellular intricacies in the dental pulp; shed light on the molecular mechanisms orchestrating root formation; and characterized cellular dynamics of the periodontal ligament. Additionally, cellular components in dental pulps were compared between healthy and carious teeth at a single-cell level. Each section of this review contributes to a comprehensive understanding of tooth biology, offering valuable insights into developmental processes, niche cell identification, and the molecular secrets of the dental environment.
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Affiliation(s)
- Dahlia Eldeeb
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Japan
- Department of Physiology, Division of Biomedical Sciences, Nihon University School of Medicine, Japan
- Department of Oral Biology, Faculty of Dentistry, Cairo University, Egypt
| | - Yuki Ikeda
- Department of Tissue and Developmental Biology, Graduate School of Dentistry, Osaka University, Japan
| | - Hironori Hojo
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Japan
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Japan
| | - Shinsuke Ohba
- Department of Tissue and Developmental Biology, Graduate School of Dentistry, Osaka University, Japan
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2
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Guo T, Pei F, Zhang M, Yamada T, Feng J, Jing J, Ho TV, Chai Y. Vascular architecture regulates mesenchymal stromal cell heterogeneity via P53-PDGF signaling in the mouse incisor. Cell Stem Cell 2024; 31:904-920.e6. [PMID: 38703771 PMCID: PMC11162319 DOI: 10.1016/j.stem.2024.04.011] [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: 08/05/2023] [Revised: 02/17/2024] [Accepted: 04/15/2024] [Indexed: 05/06/2024]
Abstract
Mesenchymal stem cells (MSCs) reside in niches to maintain tissue homeostasis and contribute to repair and regeneration. Although the physiological functions of blood and lymphatic vasculature are well studied, their regulation of MSCs as niche components remains largely unknown. Using adult mouse incisors as a model, we uncover the role of Trp53 in regulating vascular composition through THBS2 to maintain mesenchymal tissue homeostasis. Loss of Trp53 in GLI1+ progeny increases arteries and decreases other vessel types. Platelet-derived growth factors from arteries deposit in the MSC region and interact with PDGFRA and PDGFRB. Significantly, PDGFRA+ and PDGFRB+ cells differentially contribute to defined cell lineages in the adult mouse incisor. Collectively, our results highlight Trp53's importance in regulating the vascular niche for MSCs. They also shed light on how different arterial cells provide unique cues to regulate MSC subpopulations and maintain their heterogeneity. Furthermore, they provide mechanistic insight into MSC-vasculature crosstalk.
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Affiliation(s)
- Tingwei Guo
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA 90033, USA
| | - Fei Pei
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA 90033, USA
| | - Mingyi Zhang
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA 90033, USA
| | - Takahiko Yamada
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA 90033, USA
| | - Jifan Feng
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA 90033, USA
| | - Junjun Jing
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA 90033, USA
| | - Thach-Vu Ho
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA 90033, USA
| | - Yang Chai
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA 90033, USA.
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Chen S, Liang B, Xu J. Unveiling heterogeneity in MSCs: exploring marker-based strategies for defining MSC subpopulations. J Transl Med 2024; 22:459. [PMID: 38750573 PMCID: PMC11094970 DOI: 10.1186/s12967-024-05294-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 05/11/2024] [Indexed: 05/19/2024] Open
Abstract
Mesenchymal stem/stromal cells (MSCs) represent a heterogeneous cell population distributed throughout various tissues, demonstrating remarkable adaptability to microenvironmental cues and holding immense promise for disease treatment. However, the inherent diversity within MSCs often leads to variability in therapeutic outcomes, posing challenges for clinical applications. To address this heterogeneity, purification of MSC subpopulations through marker-based isolation has emerged as a promising approach to ensure consistent therapeutic efficacy. In this review, we discussed the reported markers of MSCs, encompassing those developed through candidate marker strategies and high-throughput approaches, with the aim of explore viable strategies for addressing the heterogeneity of MSCs and illuminate prospective research directions in this field.
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Affiliation(s)
- Si Chen
- Shenzhen University Medical School, Shenzhen University, Shenzhen, 518000, People's Republic of China
| | - Bowei Liang
- Shenzhen University Medical School, Shenzhen University, Shenzhen, 518000, People's Republic of China
| | - Jianyong Xu
- Shenzhen Key Laboratory of Reproductive Immunology for Peri-Implantation, Guangdong Engineering Technology Research Center of Reproductive Immunology for Peri-Implantation, Shenzhen Zhongshan Obstetrics & Gynecology Hospital (formerly Shenzhen Zhongshan Urology Hospital), Fuqiang Avenue 1001, Shenzhen, 518060, Guangdong, People's Republic of China.
- Guangdong Engineering Technology Research Center of Reproductive Immunology for Peri-Implantation, Shenzhen, 518000, People's Republic of China.
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Verma S, Lin X, Coulson-Thomas VJ. The Potential Reversible Transition between Stem Cells and Transient-Amplifying Cells: The Limbal Epithelial Stem Cell Perspective. Cells 2024; 13:748. [PMID: 38727284 PMCID: PMC11083486 DOI: 10.3390/cells13090748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/18/2024] [Accepted: 04/24/2024] [Indexed: 05/13/2024] Open
Abstract
Stem cells (SCs) undergo asymmetric division, producing transit-amplifying cells (TACs) with increased proliferative potential that move into tissues and ultimately differentiate into a specialized cell type. Thus, TACs represent an intermediary state between stem cells and differentiated cells. In the cornea, a population of stem cells resides in the limbal region, named the limbal epithelial stem cells (LESCs). As LESCs proliferate, they generate TACs that move centripetally into the cornea and differentiate into corneal epithelial cells. Upon limbal injury, research suggests a population of progenitor-like cells that exists within the cornea can move centrifugally into the limbus, where they dedifferentiate into LESCs. Herein, we summarize recent advances made in understanding the mechanism that governs the differentiation of LESCs into TACs, and thereafter, into corneal epithelial cells. We also outline the evidence in support of the existence of progenitor-like cells in the cornea and whether TACs could represent a population of cells with progenitor-like capabilities within the cornea. Furthermore, to gain further insights into the dynamics of TACs in the cornea, we outline the most recent findings in other organ systems that support the hypothesis that TACs can dedifferentiate into SCs.
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Affiliation(s)
- Sudhir Verma
- College of Optometry, University of Houston, 4901 Calhoun Road, Houston, TX 77204, USA;
- Deen Dayal Upadhyaya College, University of Delhi, Delhi 110078, India
| | - Xiao Lin
- College of Optometry, University of Houston, 4901 Calhoun Road, Houston, TX 77204, USA;
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Qiu Z, Lin X, Zou L, Fu W, Lv H. Effect of graphene oxide/ poly-L-lactic acid composite scaffold on the biological properties of human dental pulp stem cells. BMC Oral Health 2024; 24:413. [PMID: 38575940 PMCID: PMC10993485 DOI: 10.1186/s12903-024-04197-7] [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: 01/09/2024] [Accepted: 03/28/2024] [Indexed: 04/06/2024] Open
Abstract
BACKGROUND Tissue engineering has attracted recent attention as a promising bone repair and reconstruction approach. Dental pulp stem cells (DPSCs) are pluripotent and can differentiate into bone cells with the correct environment and substrate. Therefore, suitable scaffold materials are essential for fabricating functional three-dimensional (3D) tissue and tissue regeneration. Composite scaffolds consisting of biodegradable polymers are very promising constructs. This study aims to verify the biological function of human DPSCs seeded onto composite scaffolds based on graphene oxide (GO) and poly-L-lactic acid (PLLA). METHODS The surface morphology was observed under scanning electron microscopy (SEM). Chemical composition was evaluated with Fourier transform infrared (FTIR) spectroscopy. The biocompatibility of GO/PLLA scaffolds was assessed using phalloidin staining of cytoskeletal actin filaments, live/dead staining, and a CCK-8 assay. The effect of GO/PLLA scaffolds on cell osteogenic differentiation was detected through ALP staining, ALP activity assays, and alizarin red S staining, complemented by quantitative real-time PCR (qRT-PCR) analysis. RESULTS Our data showed that GO and PLLA are successfully integrated and the GO/PLLA scaffolds exhibit favorable bioactivity and biocompatibility towards DPSCs. Additionally, it was observed that the 0.15% GO/PLLA scaffold group promoted DPSC proliferation and osteogenic differentiation by forming more calcium nodules, showing a higher intensity of ALP staining and ALP activity, and enhancing the expression levels of differentiation marker genes RUNX2 and COL1. CONCLUSIONS These results demonstrate that the GO/PLLA scaffold is a feasible composite material suitable for cell culture and holds promising applications for oral bone tissue engineering.
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Affiliation(s)
- Zailing Qiu
- Oral Center, Fujian Provincial Governmental Hospital, Fuzhou, China.
| | - Xuemei Lin
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key laboratory of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Luning Zou
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key laboratory of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Weihao Fu
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key laboratory of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Hongbing Lv
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key laboratory of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China.
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6
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Santamarina‐Ojeda P, Tejedor JR, Pérez RF, López V, Roberti A, Mangas C, Fernández AF, Fraga MF. Multi-omic integration of DNA methylation and gene expression data reveals molecular vulnerabilities in glioblastoma. Mol Oncol 2023; 17:1726-1743. [PMID: 37357610 PMCID: PMC10483606 DOI: 10.1002/1878-0261.13479] [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: 01/13/2023] [Revised: 04/25/2023] [Accepted: 06/23/2023] [Indexed: 06/27/2023] Open
Abstract
Glioblastoma (GBM) is one of the most aggressive types of cancer and exhibits profound genetic and epigenetic heterogeneity, making the development of an effective treatment a major challenge. The recent incorporation of molecular features into the diagnosis of patients with GBM has led to an improved categorization into various tumour subtypes with different prognoses and disease management. In this work, we have exploited the benefits of genome-wide multi-omic approaches to identify potential molecular vulnerabilities existing in patients with GBM. Integration of gene expression and DNA methylation data from both bulk GBM and patient-derived GBM stem cell lines has revealed the presence of major sources of GBM variability, pinpointing subtype-specific tumour vulnerabilities amenable to pharmacological interventions. In this sense, inhibition of the AP-1, SMAD3 and RUNX1/RUNX2 pathways, in combination or not with the chemotherapeutic agent temozolomide, led to the subtype-specific impairment of tumour growth, particularly in the context of the aggressive, mesenchymal-like subtype. These results emphasize the involvement of these molecular pathways in the development of GBM and have potential implications for the development of personalized therapeutic approaches.
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Affiliation(s)
- Pablo Santamarina‐Ojeda
- Health Research Institute of Asturias (ISPA)Spain
- Foundation for Biomedical Research and Innovation in Asturias (FINBA)Spain
- University Institute of Oncology of Asturias (IUOPA)Spain
- Centre for Biomedical Network Research on Rare Diseases (CIBERER)MadridSpain
| | - Juan Ramón Tejedor
- Health Research Institute of Asturias (ISPA)Spain
- Foundation for Biomedical Research and Innovation in Asturias (FINBA)Spain
- University Institute of Oncology of Asturias (IUOPA)Spain
- Centre for Biomedical Network Research on Rare Diseases (CIBERER)MadridSpain
- Nanomaterials and Nanotechnology Research Centre (CINN‐CSIC)Principality of AsturiasSpain
| | - Raúl F. Pérez
- Health Research Institute of Asturias (ISPA)Spain
- Foundation for Biomedical Research and Innovation in Asturias (FINBA)Spain
- University Institute of Oncology of Asturias (IUOPA)Spain
- Centre for Biomedical Network Research on Rare Diseases (CIBERER)MadridSpain
- Nanomaterials and Nanotechnology Research Centre (CINN‐CSIC)Principality of AsturiasSpain
| | - Virginia López
- Health Research Institute of Asturias (ISPA)Spain
- Foundation for Biomedical Research and Innovation in Asturias (FINBA)Spain
- University Institute of Oncology of Asturias (IUOPA)Spain
- Centre for Biomedical Network Research on Rare Diseases (CIBERER)MadridSpain
| | - Annalisa Roberti
- Health Research Institute of Asturias (ISPA)Spain
- Foundation for Biomedical Research and Innovation in Asturias (FINBA)Spain
- University Institute of Oncology of Asturias (IUOPA)Spain
- Nanomaterials and Nanotechnology Research Centre (CINN‐CSIC)Principality of AsturiasSpain
| | - Cristina Mangas
- Health Research Institute of Asturias (ISPA)Spain
- Foundation for Biomedical Research and Innovation in Asturias (FINBA)Spain
- University Institute of Oncology of Asturias (IUOPA)Spain
| | - Agustín F. Fernández
- Health Research Institute of Asturias (ISPA)Spain
- Foundation for Biomedical Research and Innovation in Asturias (FINBA)Spain
- University Institute of Oncology of Asturias (IUOPA)Spain
- Centre for Biomedical Network Research on Rare Diseases (CIBERER)MadridSpain
- Nanomaterials and Nanotechnology Research Centre (CINN‐CSIC)Principality of AsturiasSpain
| | - Mario F. Fraga
- Health Research Institute of Asturias (ISPA)Spain
- Foundation for Biomedical Research and Innovation in Asturias (FINBA)Spain
- University Institute of Oncology of Asturias (IUOPA)Spain
- Centre for Biomedical Network Research on Rare Diseases (CIBERER)MadridSpain
- Nanomaterials and Nanotechnology Research Centre (CINN‐CSIC)Principality of AsturiasSpain
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Huang Z, Huang Y, Ning X, Li H, Li Q, Wu J. The functional effects of Piezo channels in mesenchymal stem cells. Stem Cell Res Ther 2023; 14:222. [PMID: 37633928 PMCID: PMC10464418 DOI: 10.1186/s13287-023-03452-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 08/14/2023] [Indexed: 08/28/2023] Open
Abstract
Mesenchymal stem cells (MSCs) are widely used in cell therapy, tissue engineering, and regenerative medicine because of their self-renewal, pluripotency, and immunomodulatory properties. The microenvironment in which MSCs are located significantly affects their physiological functions. The microenvironment directly or indirectly affects cell behavior through biophysical, biochemical, or other means. Among them, the mechanical signals provided to MSCs by the microenvironment have a particularly pronounced effect on their physiological functions and can affect osteogenic differentiation, chondrogenic differentiation, and senescence in MSCs. Mechanosensitive ion channels such as Piezo1 and Piezo2 are important in transducing mechanical signals, and these channels are widely distributed in sites such as skin, bladder, kidney, lung, sensory neurons, and dorsal root ganglia. Although there have been numerous studies on Piezo channels in MSCs in recent years, the function of Piezo channels in MSCs is still not well understood, and there has been no summary of their relationship to illustrate which physiological functions of MSCs are affected by Piezo channels and the possible underlying mechanisms. Therefore, based on the members, structures, and functions of Piezo ion channels and the fundamental information of MSCs, this paper focused on summarizing the advances in Piezo channels in MSCs from various tissue sources to provide new ideas for future research and practical applications of Piezo channels and MSCs.
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Affiliation(s)
- Zhilong Huang
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, China
| | - Yingying Huang
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, China
| | - Xiner Ning
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, China
| | - Haodi Li
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, China
| | - Qiqi Li
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, China
| | - Junjie Wu
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, China.
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8
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Guo X, Duan X. Genotype-phenotype analysis of selective failure of tooth eruption-A systematic review. Clin Genet 2023. [PMID: 37448157 DOI: 10.1111/cge.14400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/21/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023]
Abstract
Tooth eruption is an important and unique biological process during craniofacial development. Both the genetic and environmental factors can interfere with this process. Here we aimed to find the failure pattern of tooth eruption among five genetic diseases. Both systematic review and meta-analysis were used to identify the genotype-phenotype associations of unerupted teeth. The meta-analysis was based on the characteristics of abnormal tooth eruption in 223 patients with the mutations in PTH1R, RUNX2, COL1A1/2, CLCN7, and FAM20A respectively. We found all the patients presented selective failure of tooth eruption (SFTE). Primary failure of eruption patients with PTH1R mutations showed primary or isolated SFTE1 in the first and second molars (59.3% and 52% respectively). RUNX2 related cleidocranial dysplasia usually had SFTE2 in canines and premolars, while COL1A1/2 related osteogenesis imperfecta mostly caused SFTE3 in the maxillary second molars (22.9%). In CLCN7 related osteopetrosis, the second molars and mandibular first molars were the most affected. While FAM20A related enamel renal syndrome most caused SFTE5 in the second molars (86.2%) and maxillary canines. In conclusion, the SFTE was the common characteristics of most genetic diseases with abnormal isolated or syndromic tooth eruption. The selective pattern of unerupted teeth was gene-dependent. Here we recommend SFTE to classify those genetic unerupted teeth and guide for precise molecular diagnosis and treatment.
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Affiliation(s)
- Xinyue Guo
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Oral Biology, Clinic of Oral Rare and Genetic Diseases, School of Stomatology, The Fourth Military Medical University, Xi'an, People's Republic of China
| | - Xiaohong Duan
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Oral Biology, Clinic of Oral Rare and Genetic Diseases, School of Stomatology, The Fourth Military Medical University, Xi'an, People's Republic of China
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Sui BD, Zheng CX, Zhao WM, Xuan K, Li B, Jin Y. Mesenchymal condensation in tooth development and regeneration: a focus on translational aspects of organogenesis. Physiol Rev 2023; 103:1899-1964. [PMID: 36656056 DOI: 10.1152/physrev.00019.2022] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 12/26/2022] [Accepted: 01/16/2023] [Indexed: 01/20/2023] Open
Abstract
The teeth are vertebrate-specific, highly specialized organs performing fundamental functions of mastication and speech, the maintenance of which is crucial for orofacial homeostasis and is further linked to systemic health and human psychosocial well-being. However, with limited ability for self-repair, the teeth can often be impaired by traumatic, inflammatory, and progressive insults, leading to high prevalence of tooth loss and defects worldwide. Regenerative medicine holds the promise to achieve physiological restoration of lost or damaged organs, and in particular an evolving framework of developmental engineering has pioneered functional tooth regeneration by harnessing the odontogenic program. As a key event of tooth morphogenesis, mesenchymal condensation dictates dental tissue formation and patterning through cellular self-organization and signaling interaction with the epithelium, which provides a representative to decipher organogenetic mechanisms and can be leveraged for regenerative purposes. In this review, we summarize how mesenchymal condensation spatiotemporally assembles from dental stem cells (DSCs) and sequentially mediates tooth development. We highlight condensation-mimetic engineering efforts and mechanisms based on ex vivo aggregation of DSCs, which have achieved functionally robust and physiologically relevant tooth regeneration after implantation in animals and in humans. The discussion of this aspect will add to the knowledge of development-inspired tissue engineering strategies and will offer benefits to propel clinical organ regeneration.
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Affiliation(s)
- Bing-Dong Sui
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Chen-Xi Zheng
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Wan-Min Zhao
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Kun Xuan
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, China
- Department of Preventive Dentistry, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Bei Li
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Yan Jin
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, China
- Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, Shaanxi, China
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10
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Huerta Y, Lenz J, Flesner B, Abrams B, Amerman H, Griffin M. Resolution of paraneoplastic hypoglycemia following nephroureterectomy for treatment of canine renal cell carcinoma: Case report. Front Vet Sci 2023; 10:1134098. [PMID: 37065226 PMCID: PMC10102469 DOI: 10.3389/fvets.2023.1134098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 03/14/2023] [Indexed: 04/03/2023] Open
Abstract
ObjectivesTo describe the clinicopathologic findings, imaging results, surgical treatment, and outcome of a dog with renal cell carcinoma (RCC) and paraneoplastic hypoglycemia.AnimalsA 13-year-old female spayed mixed breed dog that was presented for facial twitching and neurologic decline and diagnosed with a renal mass and paraneoplastic hypoglycemia.Study designCase report.MethodsSerum chemistry revealed severe hypoglycemia and normal renal values. Abdominal ultrasonography showed a large, heterogeneous, cavitated mass associated with the left kidney and no evidence of abdominal metastatic disease. Thoracic radiographs revealed no evidence of pulmonary metastatic disease. Fasted serum insulin was low concurrently with severe hypoglycemia. No other causes of hypoglycemia were detected, and paraneoplastic hypoglycemia was suspected.ResultsAfter initial medical management of the dog's hypoglycemia, left nephroureterectomy was performed. Histopathology was consistent with RCC. Postoperatively, the dog's hypoglycemia resolved, and supplementation was discontinued. The dog remained stable and was discharged from the hospital 3 days after surgery. At 2-week, 3-month, and 5-month follow up evaluations, the dog remained euglycemic, and no definitive evidence of disease progression was detected. Eight months postoperatively, the dog was euthanized due to decline in mobility. Necropsy and histopathology revealed cerebral and spinal cord multifocal myelin sheath dilation and two primary pulmonary carcinomas with no evidence of recurrence or metastasis of the RCC.ConclusionSurgical treatment of RCC with subsequent resolution of paraneoplastic hypoglycemia has not previously been reported in veterinary medicine. In this dog, nephroureterectomy for RCC resulted in immediate and sustained resolution of paraneoplastic hypoglycemia.
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Affiliation(s)
- Yael Huerta
- Department of Clinical Sciences and Advanced Medicine, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, United States
| | - Jennifer Lenz
- Department of Clinical Sciences and Advanced Medicine, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, United States
| | - Brian Flesner
- Department of Clinical Sciences and Advanced Medicine, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, United States
| | - Brittany Abrams
- Department of Clinical Sciences and Advanced Medicine, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, United States
| | - Hayley Amerman
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, United States
| | - Maureen Griffin
- Department of Clinical Sciences and Advanced Medicine, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, United States
- *Correspondence: Maureen Griffin
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11
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Li L, Wang H, Yu D, Wang Y, Zhao Y, Yang H, Cao Y, Cao Y. Insulin-like growth factor binding protein 5 accelerate the senescence of periodontal ligament stem cells. Cell Tissue Bank 2023; 24:231-239. [PMID: 35939161 DOI: 10.1007/s10561-022-10030-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 07/18/2022] [Indexed: 01/10/2023]
Abstract
Evidences have showed stem cell mediated tissue regeneration is a promising method for the treatment of periodontitis. Insulin-like growth factor binding proteins-5 (IGFBP5) is a member of the insulin growth factor (IGFs) family and plays a regulatory role in cell proliferation and differentiation. Our previous study showed that IGFBP5 can promote osteogenic differentiation of periodontal ligament stem cells (PDLSCs) and enhance periodontal tissue regeneration mediated by PDLSCs. However, the function of IGFBP5 in the process of PDLSCs senescence remains unclear. The present study showed IGFBP5 mRNA level was highly expressed in passage-induced aged PDLSCs cells. IGFBP5 knockdown decreased the ratio of senescence associated β-galactosidase (SA-β-Gal) positive cells, enhanced the activity of TERT, and down-regulated the expression levels of P16, P21, P53 mRNA and protein. Overexpression of IGFBP5 increased the ratio of SA-β-Gal positive staining PDLSCs, decreased the activity of telomerase TERT, and up-regulated the expression levels of P16, P21, P53 mRNA and protein related to PDLSCs senescence. In conclusion, IGFBP5 can accelerate the senescence of PDLSCs, indicating the potential target for maintaining the "young state" of stem cells.
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Affiliation(s)
- Le Li
- Department of Stomatology, Tsinghua University Hospital, Beijing, 100084, China
| | - Haiyan Wang
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Tian Tan Xi Li No.4, Beijing, 100050, People's Republic of China
| | - Dianqin Yu
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Tian Tan Xi Li No.4, Beijing, 100050, People's Republic of China
| | - Yantong Wang
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Tian Tan Xi Li No.4, Beijing, 100050, People's Republic of China
| | - Yingchu Zhao
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Tian Tan Xi Li No.4, Beijing, 100050, People's Republic of China
| | - Haoqing Yang
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Tian Tan Xi Li No.4, Beijing, 100050, People's Republic of China
| | - Yangyang Cao
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Tian Tan Xi Li No.4, Beijing, 100050, People's Republic of China
| | - Yu Cao
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Tian Tan Xi Li No.4, Beijing, 100050, People's Republic of China. .,Department of General Dentistry, Capital Medical University School of Stomatology, Tian Tan Xi Li No.4, Beijing, 100050, People's Republic of China.
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12
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Pei F, Ma L, Jing J, Feng J, Yuan Y, Guo T, Han X, Ho TV, Lei J, He J, Zhang M, Chen JF, Chai Y. Sensory nerve niche regulates mesenchymal stem cell homeostasis via FGF/mTOR/autophagy axis. Nat Commun 2023; 14:344. [PMID: 36670126 PMCID: PMC9859800 DOI: 10.1038/s41467-023-35977-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 01/10/2023] [Indexed: 01/22/2023] Open
Abstract
Mesenchymal stem cells (MSCs) reside in microenvironments, referred to as niches, which provide structural support and molecular signals. Sensory nerves are niche components in the homeostasis of tissues such as skin, bone marrow and hematopoietic system. However, how the sensory nerve affects the behavior of MSCs remains largely unknown. Here we show that the sensory nerve is vital for mesenchymal tissue homeostasis and maintenance of MSCs in the continuously growing adult mouse incisor. Loss of sensory innervation leads to mesenchymal disorder and a decrease in MSCs. Mechanistically, FGF1 from the sensory nerve directly acts on MSCs by binding to FGFR1 and activates the mTOR/autophagy axis to sustain MSCs. Modulation of mTOR/autophagy restores the MSCs and rescues the mesenchymal tissue disorder of Fgfr1 mutant mice. Collectively, our study provides insights into the role of sensory nerves in the regulation of MSC homeostasis and the mechanism governing it.
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Affiliation(s)
- Fei Pei
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA, 90033, USA
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, 430079, Wuhan, China
| | - Li Ma
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA, 90033, USA
| | - Junjun Jing
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA, 90033, USA
| | - Jifan Feng
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA, 90033, USA
| | - Yuan Yuan
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA, 90033, USA
| | - Tingwei Guo
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA, 90033, USA
| | - Xia Han
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA, 90033, USA
| | - Thach-Vu Ho
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA, 90033, USA
| | - Jie Lei
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA, 90033, USA
| | - Jinzhi He
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA, 90033, USA
| | - Mingyi Zhang
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA, 90033, USA
| | - Jian-Fu Chen
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA, 90033, USA
| | - Yang Chai
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA, 90033, USA.
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13
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Jing J, Zhang M, Guo T, Pei F, Yang Y, Chai Y. Rodent incisor as a model to study mesenchymal stem cells in tissue homeostasis and repair. FRONTIERS IN DENTAL MEDICINE 2022. [DOI: 10.3389/fdmed.2022.1068494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
The homeostasis of adult tissues, such as skin, hair, blood, and bone, requires continuous generation of differentiated progeny of stem cells. The rodent incisor undergoes constant renewal and can provide an extraordinary model for studying stem cells and their progeny in adult tissue homeostasis, cell differentiation and injury-induced regeneration. Meanwhile, cellular heterogeneity in the mouse incisor also provides an opportunity to study cell-cell communication between different cell types, including interactions between stem cells and their niche environment. More importantly, the molecular and cellular regulatory mechanisms revealed by the mouse incisor have broad implications for other organs. Here we review recent findings and advances using the mouse incisor as a model, including perspectives on the heterogeneity of cells in the mesenchyme, the niche environment, and signaling networks that regulate stem cell behavior. The progress from this field will not only expand the knowledge of stem cells and organogenesis, but also bridge a gap between animal models and tissue regeneration.
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14
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Feng G, Zhao J, Peng J, Luo B, Zhang J, Chen L, Xu Z. Circadian clock—A promising scientific target in oral science. Front Physiol 2022; 13:1031519. [PMCID: PMC9708896 DOI: 10.3389/fphys.2022.1031519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 10/31/2022] [Indexed: 11/17/2022] Open
Abstract
The oral and maxillofacial organs play vital roles in chewing, maintaining facial beauty, and speaking. Almost all physiological processes display circadian rhythms that are driven by the circadian clock, allowing organisms to adapt to the changing environment. In recent years, increasing evidence has shown that the circadian clock system participates in oral and maxillofacial physiological and pathological processes, such as jaw and tooth development, salivary gland function, craniofacial malformations, oral carcinoma and other diseases. However, the roles of the circadian clock in oral science have not yet been comprehensively reviewed. Therefore, This paper provides a systematic and integrated perspective on the function of the circadian clock in the fields of oral science, reviews recent advances in terms of the circadian clock in oral and maxillofacial development and disease, dialectically analyzes the importance of the circadian clock system and circadian rhythm to the activities of oral and maxillofacial tissues, and focuses on analyzing the mechanism of the circadian clock in the maintenance of oral health, affecting the common diseases of the oral and maxillofacial region and the process of oral-related systemic diseases, sums up the chronotherapy and preventive measures for oral-related diseases based on changes in tissue activity circadian rhythms, meanwhile, comes up with a new viewpoint to promote oral health and human health.
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Affiliation(s)
- Guangxia Feng
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiajia Zhao
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, China
| | - Jinfeng Peng
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Beibei Luo
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiaqi Zhang
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lili Chen
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, China
- *Correspondence: Lili Chen, ; Zhi Xu,
| | - Zhi Xu
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, China
- *Correspondence: Lili Chen, ; Zhi Xu,
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15
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ROS-Mediated Enamel Formation Disturbance Characterized by Alternative Cervical Loop Cell Proliferation and Downregulation of RhoA/ROCK in Ameloblasts. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:5769679. [DOI: 10.1155/2022/5769679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 08/18/2022] [Indexed: 11/17/2022]
Abstract
Reactive oxygen stress (ROS) is generally accepted as a signal transducer for coordinating the growth and differentiation of tissues and organs in the oral and maxillofacial region. Although ROS has been confirmed to affect the development of enamel, it is not yet known that the specific mechanism of ROS accumulation induced enamel defects. Given the lack of knowledge of the role of ROS in enamel, the aim of the study is to determine how oxidative stress affects cervical cells and ameloblast cells. Using SOD1 knockout mice, we identified a relationship between ROS fluctuations and abnormal enamel structure with HE staining, micro-CT, and scanning electron microscope. Increased ROS induced by H2O2, certified by the DCFH probe, has resulted in a dual effect on the proliferation and differentiation of cervical cells, indicating a higher tendency to proliferate at low ROS concentrations. Ameloblasts transfected with SOD1 siRNA showed a significant reduction of RhoA and ROCK. This study investigates for the first time that SOD1-mediated ROS accumulation disrupted normal enamel structure through alternative cervical loop cell proliferation and downregulation of RhoA and ROCK in ameloblasts, demonstrating the convoluted role of ROS in monitoring the progress of enamel defects.
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16
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Hermans F, Bueds C, Hemeryck L, Lambrichts I, Bronckaers A, Vankelecom H. Establishment of inclusive single-cell transcriptome atlases from mouse and human tooth as powerful resource for dental research. Front Cell Dev Biol 2022; 10:1021459. [PMID: 36299483 PMCID: PMC9590651 DOI: 10.3389/fcell.2022.1021459] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 09/12/2022] [Indexed: 11/13/2022] Open
Abstract
Single-cell (sc) omics has become a powerful tool to unravel a tissue’s cell landscape across health and disease. In recent years, sc transcriptomic interrogation has been applied to a variety of tooth tissues of both human and mouse, which has considerably advanced our fundamental understanding of tooth biology. Now, an overarching and integrated bird’s-view of the human and mouse tooth sc transcriptomic landscape would be a powerful multi-faceted tool for dental research, enabling further decipherment of tooth biology and development through constantly progressing state-of-the-art bioinformatic methods as well as the exploration of novel hypothesis-driven research. To this aim, we re-assessed and integrated recently published scRNA-sequencing datasets of different dental tissue types (healthy and diseased) from human and mouse to establish inclusive tooth sc atlases, and applied the consolidated data map to explore its power. For mouse tooth, we identified novel candidate transcriptional regulators of the ameloblast lineage. Regarding human tooth, we provide support for a developmental connection, not advanced before, between specific epithelial compartments. Taken together, we established inclusive mouse and human tooth sc atlases as powerful tools to potentiate innovative research into tooth biology, development and disease. The maps are provided online in an accessible format for interactive exploration.
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Affiliation(s)
- Florian Hermans
- Laboratory of Tissue Plasticity in Health and Disease, Cluster of Stem Cell and Developmental Biology, Department of Development and Regeneration, Leuven Stem Cell Institute, KU Leuven (University of Leuven), Leuven, Belgium
- UHasselt-Hasselt University, Biomedical Research Institute (BIOMED), Department of Cardio and Organ Systems, Diepenbeek, Belgium
- *Correspondence: Florian Hermans, ; Hugo Vankelecom,
| | - Celine Bueds
- Laboratory of Tissue Plasticity in Health and Disease, Cluster of Stem Cell and Developmental Biology, Department of Development and Regeneration, Leuven Stem Cell Institute, KU Leuven (University of Leuven), Leuven, Belgium
| | - Lara Hemeryck
- Laboratory of Tissue Plasticity in Health and Disease, Cluster of Stem Cell and Developmental Biology, Department of Development and Regeneration, Leuven Stem Cell Institute, KU Leuven (University of Leuven), Leuven, Belgium
| | - Ivo Lambrichts
- UHasselt-Hasselt University, Biomedical Research Institute (BIOMED), Department of Cardio and Organ Systems, Diepenbeek, Belgium
| | - Annelies Bronckaers
- UHasselt-Hasselt University, Biomedical Research Institute (BIOMED), Department of Cardio and Organ Systems, Diepenbeek, Belgium
| | - Hugo Vankelecom
- Laboratory of Tissue Plasticity in Health and Disease, Cluster of Stem Cell and Developmental Biology, Department of Development and Regeneration, Leuven Stem Cell Institute, KU Leuven (University of Leuven), Leuven, Belgium
- *Correspondence: Florian Hermans, ; Hugo Vankelecom,
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17
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Liu J, Gao J, Liang Z, Gao C, Niu Q, Wu F, Zhang L. Mesenchymal stem cells and their microenvironment. STEM CELL RESEARCH & THERAPY 2022; 13:429. [PMID: 35987711 PMCID: PMC9391632 DOI: 10.1186/s13287-022-02985-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Accepted: 04/28/2022] [Indexed: 11/10/2022]
Abstract
Mesenchymal stem cells (MSCs), coming from a wide range of sources, have multi-directional differentiation ability. MSCs play vital roles in immunomodulation, hematopoiesis and tissue repair. The microenvironment of cells often refers to the intercellular matrix, other cells, cytokines and humoral components. It is also the place for cells’ interaction. The stability of the microenvironment is pivotal for maintaining cell proliferation, differentiation, metabolism and functional activities. Abnormal changes in microenvironment components can interfere cell functions. In some diseases, MSCs can interact with the microenvironment and accelerate disease progression. This review will discuss the characteristics of MSCs and their microenvironment, as well as the interaction between MSCs and microenvironment in disease.
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18
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Chen Y, Zhang Z, Yang X, Liu A, Liu S, Feng J, Xuan K. Odontogenic MSC Heterogeneity: Challenges and Opportunities for Regenerative Medicine. Front Physiol 2022; 13:827470. [PMID: 35514352 PMCID: PMC9061943 DOI: 10.3389/fphys.2022.827470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 03/30/2022] [Indexed: 01/09/2023] Open
Abstract
Cellular heterogeneity refers to the genetic and phenotypic differences among cells, which reflect their various fate choices, including viability, proliferation, self-renewal probability, and differentiation into different lineages. In recent years, research on the heterogeneity of mesenchymal stem cells has made some progress. Odontogenic mesenchymal stem cells share the characteristics of mesenchymal stem cells, namely, good accessibility, low immunogenicity and high stemness. In addition, they also exhibit the characteristics of vasculogenesis and neurogenesis, making them attractive for tissue engineering and regenerative medicine. However, the usage of mesenchymal stem cell subgroups differs in different diseases. Furthermore, because of the heterogeneity of odontogenic mesenchymal stem cells, their application in tissue regeneration and disease management is restricted. Findings related to the heterogeneity of odontogenic mesenchymal stem cells urgently need to be summarized, thus, we reviewed studies on odontogenic mesenchymal stem cells and their specific subpopulations, in order to provide indications for further research on the stem cell regenerative therapy.
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Affiliation(s)
- Yuan Chen
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Department of Preventive Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Zhaoyichun Zhang
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xiaoxue Yang
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Department of Preventive Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Anqi Liu
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Department of Preventive Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Shiyu Liu
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Department of Preventive Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Jianying Feng
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Kun Xuan
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Department of Preventive Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, China
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19
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Zhou X, Liu J, Zheng Y, Zhang Z, Wu Y, Yang W, Liu J, Huang Y, Yi Y, Zhao Z, Xiao H, Mo X, Wang J. SM22α-lineage niche cells regulate intramembranous bone regeneration via PDGFRβ-triggered hydrogen sulfide production. Cell Rep 2022; 39:110750. [PMID: 35508129 DOI: 10.1016/j.celrep.2022.110750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 02/02/2022] [Accepted: 04/06/2022] [Indexed: 02/08/2023] Open
Abstract
Bone stromal cells are critical for bone homeostasis and regeneration. Growing evidence suggests that non-stem bone niche cells support bone homeostasis and regeneration via paracrine mechanisms, which remain to be elucidated. Here, we show that physiologically quiescent SM22α-lineage stromal cells expand after bone injury to regulate diverse processes of intramembranous bone regeneration. The majority of SM22α-lineage cells neither act as stem cells in vivo nor show their expression patterns. Dysfunction of SM22α-lineage niche cells induced by loss of platelet-derived growth factor receptor β (PDGFRβ) impairs bone repair. We further show that PDGFRβ-triggered hydrogen sulfide (H2S) generation in SM22α-lineage niche cells facilitates osteogenesis and angiogenesis and suppresses overactive osteoclastogenesis. Collectively, these data demonstrate that non-stem SM22α-lineage niche cells support the niche for bone regeneration with a PDGFRβ/H2S-dependent regulatory mechanism. Our findings provide further insight into non-stem bone stromal niche cell populations and niche-regulation strategy for bone repair.
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Affiliation(s)
- Xueman Zhou
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China; Laboratory of Aging Research, State Key Laboratory of Biotherapy & National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Jin Liu
- Laboratory of Aging Research, State Key Laboratory of Biotherapy & National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Laboratory of Stem Cell Biology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.
| | - Yingcheng Zheng
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China; Laboratory of Aging Research, State Key Laboratory of Biotherapy & National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Zhenzhen Zhang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China; Laboratory of Aging Research, State Key Laboratory of Biotherapy & National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Yange Wu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Wenke Yang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Jiaqi Liu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Yanmei Huang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Yating Yi
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Zhihe Zhao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Hengyi Xiao
- Laboratory of Aging Research, State Key Laboratory of Biotherapy & National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Xianming Mo
- Laboratory of Stem Cell Biology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.
| | - Jun Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China.
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20
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Pincha N, Marangoni P, Haque A, Klein OD. Parallels in signaling between development and regeneration in ectodermal organs. Curr Top Dev Biol 2022; 149:373-419. [PMID: 35606061 PMCID: PMC10049776 DOI: 10.1016/bs.ctdb.2022.02.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Ectodermal organs originate from the outermost germ layer of the developing embryo and include the skin, hair, tooth, nails, and exocrine glands. These organs develop through tightly regulated, sequential and reciprocal epithelial-mesenchymal crosstalk, and they eventually assume various morphologies and functions while retaining the ability to regenerate. As with many other tissues in the body, the development and morphogenesis of these organs are regulated by a set of common signaling pathways, such as Shh, Wnt, Bmp, Notch, Tgf-β, and Eda. However, subtle differences in the temporal activation, the multiple possible combinations of ligand-receptor activation, the various cofactors, as well as the underlying epigenetic modulation determine how each organ develops into its adult form. Although each organ has been studied separately in considerable detail, the mechanisms underlying the parallels and differences in signaling that regulate their development have rarely been investigated. First, we will use the tooth, the hair follicle, and the mammary gland as representative ectodermal organs to explore how the development of signaling centers and establishment of stem cell populations influence overall growth and morphogenesis. Then we will compare how some of the major signaling pathways (Shh, Wnt, Notch and Yap/Taz) differentially regulate developmental events. Finally, we will discuss how signaling regulates regenerative processes in all three.
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Affiliation(s)
- Neha Pincha
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, CA, United States
| | - Pauline Marangoni
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, CA, United States
| | - Ameera Haque
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, CA, United States
| | - Ophir D Klein
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, CA, United States; Department of Pediatrics and Institute for Human Genetics, University of California, San Francisco, CA, United States.
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21
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Chen S, Lan L, Lei J, He Y, Zhang Y. Gli1+ Osteogenic Progenitors Contribute to Condylar Development and Fracture Repair. Front Cell Dev Biol 2022; 10:819689. [PMID: 35330911 PMCID: PMC8940214 DOI: 10.3389/fcell.2022.819689] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 02/10/2022] [Indexed: 12/30/2022] Open
Abstract
The condyle plays a pivotal role in mandible development, which is regulated by various signaling molecules. The hedgehog (Hh) signaling pathway is known to modulate several processes during bone formation. However, the role of Gli1, as the read-out of Hh signaling activity, in condylar development and fracture healing has not been clarified. In this study, we discovered that a population of Gli1+ cells residing immediately below the cartilage functions as osteogenic progenitors by using Gli1-Cre ERT2 ;tdTomato mice. These Gli1+ cells contributed to nearly all osteoblasts in the subchondral bone during condyle postnatal development. Interestingly, Gli1-lineage cells could differentiate into osteoblasts and chondrocytes during fracture healing. Inhibiting Wnt/β-catenin signaling downregulated the proliferation and differentiation of Gli1+ cells in vitro. These findings suggest that Gli1+ progenitor cells participate in not only normal bone formation but also fracture healing; moreover, these cells may provide a potential target for promoting bone regeneration of the mandible.
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Affiliation(s)
- Shuo Chen
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China.,National Center of Stomatology, Beijing, China.,National Clinical Research Center for Oral Disease, Beijing, China.,National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, China
| | - Lin Lan
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China.,National Center of Stomatology, Beijing, China.,National Clinical Research Center for Oral Disease, Beijing, China.,National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, China
| | - Jie Lei
- National Center of Stomatology, Beijing, China.,National Clinical Research Center for Oral Disease, Beijing, China.,National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, China.,Center for TMD and Orofacial Pain, Peking University School, Hospital of Stomatology, Beijing, China
| | - Yang He
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China.,National Center of Stomatology, Beijing, China.,National Clinical Research Center for Oral Disease, Beijing, China.,National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, China
| | - Yi Zhang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China.,National Center of Stomatology, Beijing, China.,National Clinical Research Center for Oral Disease, Beijing, China.,National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, China
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22
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Guo T, Han X, He J, Feng J, Jing J, Janečková E, Lei J, Ho TV, Xu J, Chai Y. KDM6B interacts with TFDP1 to activate P53 signalling in regulating mouse palatogenesis. eLife 2022; 11:74595. [PMID: 35212626 PMCID: PMC9007587 DOI: 10.7554/elife.74595] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Accepted: 02/24/2022] [Indexed: 11/13/2022] Open
Abstract
Epigenetic regulation plays extensive roles in diseases and development. Disruption of epigenetic regulation not only increases the risk of cancer, but can also cause various developmental defects. However, the question of how epigenetic changes lead to tissue-specific responses during neural crest fate determination and differentiation remains understudied. Using palatogenesis as a model, we reveal the functional significance of Kdm6b, an H3K27me3 demethylase, in regulating mouse embryonic development. Our study shows that Kdm6b plays an essential role in cranial neural crest development, and loss of Kdm6b disturbs P53 pathway-mediated activity, leading to complete cleft palate along with cell proliferation and differentiation defects in mice. Furthermore, activity of H3K27me3 on the promoter of Trp53 is antagonistically controlled by Kdm6b, and Ezh2 in cranial neural crest cells. More importantly, without Kdm6b, the transcription factor TFDP1, which normally binds to the promoter of Trp53, cannot activate Trp53 expression in palatal mesenchymal cells. Furthermore, the function of Kdm6b in activating Trp53 in these cells cannot be compensated for by the closely related histone demethylase Kdm6a. Collectively, our results highlight the important role of the epigenetic regulator KDM6B and how it specifically interacts with TFDP1 to achieve its functional specificity in regulating Trp53 expression, and further provide mechanistic insights into the epigenetic regulatory network during organogenesis.
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Affiliation(s)
- Tingwei Guo
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, United States
| | - Xia Han
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, United States
| | - Jinzhi He
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, United States
| | - Jifan Feng
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, United States
| | - Junjun Jing
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, United States
| | - Eva Janečková
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, United States
| | - Jie Lei
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, United States
| | - Thach-Vu Ho
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, United States
| | - Jian Xu
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, United States
| | - Yang Chai
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, United States
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23
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Sanna S, Kurilshikov A, van der Graaf A, Fu J, Zhernakova A. Challenges and future directions for studying effects of host genetics on the gut microbiome. Nat Genet 2022; 54:100-106. [PMID: 35115688 DOI: 10.1038/s41588-021-00983-z] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 11/02/2021] [Indexed: 12/15/2022]
Abstract
The human gut microbiome is a complex ecosystem that is involved in its host's metabolism, immunity and health. Although interindividual variations in gut microbial composition are mainly driven by environmental factors, some gut microorganisms are heritable and thus can be influenced by host genetics. In the past 5 years, 12 microbial genome-wide association studies (mbGWAS) with >1,000 participants have been published, yet only a few genetic loci have been consistently confirmed across multiple studies. Here we discuss the state of the art for mbGWAS, focusing on current challenges such as the heterogeneity of microbiome measurements and power issues, and we elaborate on potential future directions for genetic analysis of the microbiome.
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Affiliation(s)
- Serena Sanna
- Institute for Genetic and Biomedical Research (IRGB), National Research Council (CNR), Monserrato, Cagliari, Italy.
- Department of Genetics, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands.
| | - Alexander Kurilshikov
- Department of Genetics, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Adriaan van der Graaf
- Department of Genetics, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
- Department of Computational Biology, University of Lausanne, Lausanne, Switzerland
| | - Jingyuan Fu
- Department of Genetics, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
- Department of Pediatrics, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Alexandra Zhernakova
- Department of Genetics, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands.
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24
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Shen F, Shi Y. Recent Advances in Single-Cell View of Mesenchymal Stem Cell in Osteogenesis. Front Cell Dev Biol 2022; 9:809918. [PMID: 35071243 PMCID: PMC8766509 DOI: 10.3389/fcell.2021.809918] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 12/10/2021] [Indexed: 02/05/2023] Open
Abstract
Osteoblasts continuously replenished by osteoblast progenitor cells form the basis of bone development, maintenance, and regeneration. Mesenchymal stem cells (MSCs) from various tissues can differentiate into the progenitor cell of osteogenic lineage and serve as the main source of osteoblasts. They also respond flexibly to regenerative and anabolic signals emitted by the surrounding microenvironment, thereby maintaining bone homeostasis and participating in bone remodeling. However, MSCs exhibit heterogeneity at multiple levels including different tissue sources and subpopulations which exhibit diversified gene expression and differentiation capacity, and surface markers used to predict cell differentiation potential remain to be further elucidated. The rapid advancement of lineage tracing methods and single-cell technology has made substantial progress in the characterization of osteogenic stem/progenitor cell populations in MSCs. Here, we reviewed the research progress of scRNA-seq technology in the identification of osteogenic markers and differentiation pathways, MSC-related new insights drawn from single-cell technology combined with experimental technology, and recent findings regarding the interaction between stem cell fate and niche in homeostasis and pathological process.
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Affiliation(s)
- Fangyuan Shen
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yu Shi
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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25
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Sun Y, Wan B, Wang R, Zhang B, Luo P, Wang D, Nie JJ, Chen D, Wu X. Mechanical Stimulation on Mesenchymal Stem Cells and Surrounding Microenvironments in Bone Regeneration: Regulations and Applications. Front Cell Dev Biol 2022; 10:808303. [PMID: 35127684 PMCID: PMC8815029 DOI: 10.3389/fcell.2022.808303] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 01/03/2022] [Indexed: 01/15/2023] Open
Abstract
Treatment of bone defects remains a challenge in the clinic. Artificial bone grafts are the most promising alternative to autologous bone grafting. However, one of the limiting factors of artificial bone grafts is the limited means of regulating stem cell differentiation during bone regeneration. As a weight-bearing organ, bone is in a continuous mechanical environment. External mechanical force, a type of biophysical stimulation, plays an essential role in bone regeneration. It is generally accepted that osteocytes are mechanosensitive cells in bone. However, recent studies have shown that mesenchymal stem cells (MSCs) can also respond to mechanical signals. This article reviews the mechanotransduction mechanisms of MSCs, the regulation of mechanical stimulation on microenvironments surrounding MSCs by modulating the immune response, angiogenesis and osteogenesis, and the application of mechanical stimulation of MSCs in bone regeneration. The review provides a deep and extensive understanding of mechanical stimulation mechanisms, and prospects feasible designs of biomaterials for bone regeneration and the potential clinical applications of mechanical stimulation.
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Affiliation(s)
- Yuyang Sun
- Laboratory of Bone Tissue Engineering, Beijing Laboratory of Biomedical Materials, Beijing Research Institute of Traumatology and Orthopaedics, Beijing Jishuitan Hospital, Beijing, China
| | - Ben Wan
- Laboratory of Bone Tissue Engineering, Beijing Laboratory of Biomedical Materials, Beijing Research Institute of Traumatology and Orthopaedics, Beijing Jishuitan Hospital, Beijing, China
- Department of Oral and Maxillofacial Surgery/Pathology, Amsterdam UMC and Academic Center for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam (VU), Amsterdam Movement Science (AMS), Amsterdam, Netherlands
| | - Renxian Wang
- Laboratory of Bone Tissue Engineering, Beijing Laboratory of Biomedical Materials, Beijing Research Institute of Traumatology and Orthopaedics, Beijing Jishuitan Hospital, Beijing, China
| | - Bowen Zhang
- Laboratory of Bone Tissue Engineering, Beijing Laboratory of Biomedical Materials, Beijing Research Institute of Traumatology and Orthopaedics, Beijing Jishuitan Hospital, Beijing, China
| | - Peng Luo
- Laboratory of Bone Tissue Engineering, Beijing Laboratory of Biomedical Materials, Beijing Research Institute of Traumatology and Orthopaedics, Beijing Jishuitan Hospital, Beijing, China
| | - Diaodiao Wang
- Department of Joint Surgery, Peking University Ninth School of Clinical Medicine, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Jing-Jun Nie
- Laboratory of Bone Tissue Engineering, Beijing Laboratory of Biomedical Materials, Beijing Research Institute of Traumatology and Orthopaedics, Beijing Jishuitan Hospital, Beijing, China
- *Correspondence: Jing-Jun Nie, ; Dafu Chen,
| | - Dafu Chen
- Laboratory of Bone Tissue Engineering, Beijing Laboratory of Biomedical Materials, Beijing Research Institute of Traumatology and Orthopaedics, Beijing Jishuitan Hospital, Beijing, China
- *Correspondence: Jing-Jun Nie, ; Dafu Chen,
| | - Xinbao Wu
- Laboratory of Bone Tissue Engineering, Beijing Laboratory of Biomedical Materials, Beijing Research Institute of Traumatology and Orthopaedics, Beijing Jishuitan Hospital, Beijing, China
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26
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Dental Pulp Stem Cell Heterogeneity: Finding Superior Quality "Needles" in a Dental Pulpal "Haystack" for Regenerative Medicine-Based Applications. Stem Cells Int 2022; 2022:9127074. [PMID: 35027930 PMCID: PMC8752304 DOI: 10.1155/2022/9127074] [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: 07/22/2021] [Accepted: 11/03/2021] [Indexed: 12/14/2022] Open
Abstract
Human dental pulp stem/stromal cells (hDPSCs) derived from the permanent secondary dentition are recognised to possess certain advantageous traits, which support their potential use as a viable source of mesenchymal stem/stromal cells (MSCs) for regenerative medicine-based applications. However, the well-established heterogeneous nature of hDPSC subpopulations, coupled with their limited numbers within dental pulp tissues, has impeded our understanding of hDPSC biology and the translation of sufficient quantities of these cells from laboratory research, through successful therapy development and clinical applications. This article reviews our current understanding of hDPSC biology and the evidence underpinning the molecular basis of their heterogeneity, which may be exploited to distinguish individual subpopulations with specific or superior characteristics for regenerative medicine applications. Pertinent unanswered questions which still remain, regarding the developmental origins, hierarchical organisation, and stem cell niche locations of hDPSC subpopulations and their roles in hDPSC heterogeneity and functions, will further be explored. Ultimately, a greater understanding of how key features, such as specific cell surface, senescence and other relevant genes, and protein and metabolic markers, delineate between hDPSC subpopulations with contrasting stemness, proliferative, multipotency, immunomodulatory, anti-inflammatory, and other relevant properties is required. Such knowledge advancements will undoubtedly lead to the development of novel screening, isolation, and purification strategies, permitting the routine and effective identification, enrichment, and expansion of more desirable hDPSC subpopulations for regenerative medicine-based applications. Furthermore, such innovative measures could lead to improved cell expansion, manufacture, and banking procedures, thereby supporting the translational development of hDPSC-based therapies in the future.
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27
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Zhao X, Yang Z, Liu Q, Yang P, Wang P, Wei S, Liu A, Zhao Z. Potential Load-Bearing Bone Substitution Material: Carbon-Fiber-Reinforced Magnesium-Doped Hydroxyapatite Composites with Excellent Mechanical Performance and Tailored Biological Properties. ACS Biomater Sci Eng 2022; 8:921-938. [PMID: 35029364 DOI: 10.1021/acsbiomaterials.1c01247] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A potential load-bearing bone substitution and repair material, that is, carbon fiber (CF)-reinforced magnesium-doped hydroxyapatite (CF/Mg-HAs) composites with excellent mechanical performance and tailored biological properties, was constructed via the hydrothermal method and spark plasma sintering. A high-resolution transmission electron microscopy (TEM) was employed to characterize the nanostructure of magnesium-doped hydroxyapatite (Mg-HA). TEM images showed that the doping of Mg-induced distortions and dislocations in the hydroxyapatite lattice, resulting in decreased crystallinity and enhanced dissolution. Compressive strengths of 10% magnesium-doped hydroxyapatite (1Mg-HAs) and CF-reinforced 1Mg-HAs (CF/1Mg-HAs) were within the range of that of cortical bone. Compared with 1Mg-HAs, the fracture toughness of CF/1Mg-HAs increased by approximately 38%. The bioactivity, biocompatibility, and osteogenic induction properties of Mg-HAs and CF/Mg-HAs composites were evaluated in vitro using simulated body fluid (SBF) immersion, cell culture, osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs), and expression of genes associated with osteogenesis. When Mg-HAs were immersed in SBF, Mg2+ continued to release for up to 21 days. Mg-HAs demonstrated a satisfactory ability to induce apatite formation in comparison with HAs. The cell proliferation and morphology on CF/1Mg-HAs were similar to those of 1Mg-HAs, suggesting that adding CF had no adverse effect on cellular activity. The expression levels of osteogenesis-related genes [osteocalcin (OPN), osteopontin (OCN), and runt-related transcription factor 2 (Runx2)] on 1Mg-HAs were significantly higher at days 3 and 7 than those on HAs and 0.5Mg-HAs groups. This finding suggests that a certain amount of Mg doping had beneficial influences in the different stages of osteogenic differentiation and could induce osteogenic differentiation of BMSCs. The new bone volume to total volume ratio of implanted 1Mg-HAs (30.9% ± 4.1%) and CF/1Mg-HAs (25.4% ± 5.4%) was remarkably higher than that of HAs (21.6% ± 3.9%). 1Mg-HAs and CF/1Mg-HAs tailored an ideal effect of new bone information and implant osseointegration. The excellent mechanical performance and tailored biological properties of CF/Mg-HAs were attributed to nano Mg-doped HA, CF reinforcing, refined microstructure, and controlled composition.
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Affiliation(s)
- Xueni Zhao
- College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, PR China
| | - Zhi Yang
- College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, PR China
| | - Qingyao Liu
- College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, PR China
| | - Pinglin Yang
- The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, PR China
| | - Pengfei Wang
- College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, PR China
| | - Sensen Wei
- College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, PR China
| | - Ao Liu
- College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, PR China
| | - Zhenyang Zhao
- College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, PR China
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28
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Wu Y, Zhou X, Yuan W, Liu J, Yang W, Zhu Y, Ye C, Xiong X, Zhang Q, Liu J, Wang J. Gli1+ Mesenchymal Stem Cells in Bone and Teeth. Curr Stem Cell Res Ther 2022; 17:494-502. [PMID: 34994317 DOI: 10.2174/1574888x17666220107102911] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 11/11/2021] [Accepted: 12/08/2021] [Indexed: 02/08/2023]
Abstract
Mesenchymal stem cells (MSCs) are remarkable and noteworthy. Identification of markers for MSCs enables the study of their niche in vivo. It has been identified that glioma-associated oncogene 1 positive (Gli1+) cells are mesenchymal stem cells supporting homeostasis and injury repair, especially in the skeletal system and teeth. This review outlines the role of Gli1+ cells as an MSC subpopulation in both bones and teeth, suggesting the prospects of Gli1+ cells in stem cell-based tissue engineering.
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Affiliation(s)
- Yange Wu
- Department of Orthodontics, State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China; b Lab for Aging Research, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
- Department of Orthodontics, State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xueman Zhou
- Department of Orthodontics, State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Wenxiu Yuan
- Department of Orthodontics, State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jiaqi Liu
- Department of Orthodontics, State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Wenke Yang
- Department of Orthodontics, State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yufan Zhu
- Department of Orthodontics, State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Chengxinyue Ye
- Department of Orthodontics, State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xin Xiong
- Department of Orthodontics, State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qinlanhui Zhang
- Department of Orthodontics, State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jin Liu
- Lab for Aging Research, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Jun Wang
- Department of Orthodontics, State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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29
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Hermans F, Hemeryck L, Lambrichts I, Bronckaers A, Vankelecom H. Intertwined Signaling Pathways Governing Tooth Development: A Give-and-Take Between Canonical Wnt and Shh. Front Cell Dev Biol 2021; 9:758203. [PMID: 34778267 PMCID: PMC8586510 DOI: 10.3389/fcell.2021.758203] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 10/11/2021] [Indexed: 11/13/2022] Open
Abstract
Teeth play essential roles in life. Their development relies on reciprocal interactions between the ectoderm-derived dental epithelium and the underlying neural crest-originated mesenchyme. This odontogenic process serves as a prototype model for the development of ectodermal appendages. In the mouse, developing teeth go through distinct morphological phases that are tightly controlled by epithelial signaling centers. Crucial molecular regulators of odontogenesis include the evolutionarily conserved Wnt, BMP, FGF and sonic hedgehog (Shh) pathways. These signaling modules do not act on their own, but are closely intertwined during tooth development, thereby outlining the path to be taken by specific cell populations including the resident dental stem cells. Recently, pivotal Wnt-Shh interaction and feedback loops have been uncovered during odontogenesis, showing conservation in other developing ectodermal appendages. This review provides an integrated overview of the interplay between canonical Wnt and Shh throughout mouse tooth formation stages, extending from the initiation of dental placode to the fully formed adult tooth.
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Affiliation(s)
- Florian Hermans
- Laboratory of Tissue Plasticity in Health and Disease, Cluster of Stem Cell and Developmental Biology, Department of Development and Regeneration, Leuven Stem Cell Institute, KU Leuven (University of Leuven), Leuven, Belgium.,Biomedical Research Institute (BIOMED), Department of Cardio and Organ Systems, UHasselt-Hasselt University, Diepenbeek, Belgium
| | - Lara Hemeryck
- Laboratory of Tissue Plasticity in Health and Disease, Cluster of Stem Cell and Developmental Biology, Department of Development and Regeneration, Leuven Stem Cell Institute, KU Leuven (University of Leuven), Leuven, Belgium
| | - Ivo Lambrichts
- Biomedical Research Institute (BIOMED), Department of Cardio and Organ Systems, UHasselt-Hasselt University, Diepenbeek, Belgium
| | - Annelies Bronckaers
- Biomedical Research Institute (BIOMED), Department of Cardio and Organ Systems, UHasselt-Hasselt University, Diepenbeek, Belgium
| | - Hugo Vankelecom
- Laboratory of Tissue Plasticity in Health and Disease, Cluster of Stem Cell and Developmental Biology, Department of Development and Regeneration, Leuven Stem Cell Institute, KU Leuven (University of Leuven), Leuven, Belgium
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30
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Meng K, Mei F, Zhu L, Xiang Q, Quan Z, Pan F, Xia G, Shen X, Yun Y, Zhang C, Zhong Q, Chen H. Arecanut (Areca catechu L.) seed polyphenol improves osteoporosis via gut-serotonin mediated Wnt/β-catenin pathway in ovariectomized rats. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104598] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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31
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Cranial Suture Mesenchymal Stem Cells: Insights and Advances. Biomolecules 2021; 11:biom11081129. [PMID: 34439795 PMCID: PMC8392244 DOI: 10.3390/biom11081129] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 07/25/2021] [Accepted: 07/27/2021] [Indexed: 02/05/2023] Open
Abstract
The cranial bones constitute the protective structures of the skull, which surround and protect the brain. Due to the limited repair capacity, the reconstruction and regeneration of skull defects are considered as an unmet clinical need and challenge. Previously, it has been proposed that the periosteum and dura mater provide reparative progenitors for cranial bones homeostasis and injury repair. In addition, it has also been speculated that the cranial mesenchymal stem cells reside in the perivascular niche of the diploe, namely, the soft spongy cancellous bone between the interior and exterior layers of cortical bone of the skull, which resembles the skeletal stem cells’ distribution pattern of the long bone within the bone marrow. Not until recent years have several studies unraveled and validated that the major mesenchymal stem cell population of the cranial region is primarily located within the suture mesenchyme of the skull, and hence, they are termed suture mesenchymal stem cells (SuSCs). Here, we summarized the characteristics of SuSCs, this newly discovered stem cell population of cranial bones, including the temporospatial distribution pattern, self-renewal, and multipotent properties, contribution to injury repair, as well as the signaling pathways and molecular mechanisms associated with the regulation of SuSCs.
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32
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Du J, Jing J, Chen S, Yuan Y, Feng J, Ho TV, Sehgal P, Xu J, Jiang X, Chai Y. Arid1a regulates cell cycle exit of transit-amplifying cells by inhibiting the Aurka-Cdk1 axis in mouse incisor. Development 2021; 148:dev.198838. [PMID: 33766930 DOI: 10.1242/dev.198838] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 03/18/2021] [Indexed: 12/14/2022]
Abstract
Stem cells self-renew or give rise to transit-amplifying cells (TACs) that differentiate into specific functional cell types. The fate determination of stem cells to TACs and their transition to fully differentiated progeny is precisely regulated to maintain tissue homeostasis. Arid1a, a core component of the switch/sucrose nonfermentable complex, performs epigenetic regulation of stage- and tissue-specific genes that is indispensable for stem cell homeostasis and differentiation. However, the functional mechanism of Arid1a in the fate commitment of mesenchymal stem cells (MSCs) and their progeny is not clear. Using the continuously growing adult mouse incisor model, we show that Arid1a maintains tissue homeostasis through limiting proliferation, promoting cell cycle exit and differentiation of TACs by inhibiting the Aurka-Cdk1 axis. Loss of Arid1a overactivates the Aurka-Cdk1 axis, leading to expansion of the mitotic TAC population but compromising their differentiation ability. Furthermore, the defective homeostasis after loss of Arid1a ultimately leads to reduction of the MSC population. These findings reveal the functional significance of Arid1a in regulating the fate of TACs and their interaction with MSCs to maintain tissue homeostasis.
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Affiliation(s)
- Jiahui Du
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA, 90033, USA.,Department of Prosthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Junjun Jing
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA, 90033, USA
| | - Shuo Chen
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA, 90033, USA
| | - Yuan Yuan
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA, 90033, USA
| | - Jifan Feng
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA, 90033, USA
| | - Thach-Vu Ho
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA, 90033, USA
| | - Prerna Sehgal
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA, 90033, USA
| | - Jian Xu
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA, 90033, USA
| | - Xinquan Jiang
- Department of Prosthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Yang Chai
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA, 90033, USA
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Xie J, Lou Q, Zeng Y, Liang Y, Xie S, Xu Q, Yuan L, Wang J, Jiang L, Mou L, Lin D, Zhao M. Single-Cell Atlas Reveals Fatty Acid Metabolites Regulate the Functional Heterogeneity of Mesenchymal Stem Cells. Front Cell Dev Biol 2021; 9:653308. [PMID: 33912565 PMCID: PMC8075002 DOI: 10.3389/fcell.2021.653308] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 03/09/2021] [Indexed: 12/28/2022] Open
Abstract
Bone marrow mesenchymal stem cells (MSCs) are widely used clinically due to their versatile roles in multipotency, immunomodulation, and hematopoietic stem cell (HSC) niche function. However, cellular heterogeneity limits MSCs in the consistency and efficacy of their clinical applications. Metabolism regulates stem cell function and fate decision; however, how metabolites regulate the functional heterogeneity of MSCs remains elusive. Here, using single-cell RNA sequencing, we discovered that fatty acid pathways are involved in the regulation of lineage commitment and functional heterogeneity of MSCs. Functional assays showed that a fatty acid metabolite, butyrate, suppressed the self-renewal, adipogenesis, and osteogenesis differentiation potential of MSCs with increased apoptosis. Conversely, butyrate supplement significantly promoted HSC niche factor expression in MSCs, which suggests that butyrate supplement may provide a therapeutic approach to enhance their HSC niche function. Overall, our work demonstrates that metabolites are essential to regulate the functional heterogeneity of MSCs.
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Affiliation(s)
- Jiayi Xie
- Department of Hematology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Qi Lou
- Shenzhen Lansi Institute of Artificial Intelligence in Medicine, Shenzhen, China.,The First Affiliated Hospital of Shenzhen University, Health Science Center, Shenzhen Second People's Hospital, Shenzhen, China
| | - Yunxin Zeng
- Department of Hematology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Yingying Liang
- Shenzhen Lansi Institute of Artificial Intelligence in Medicine, Shenzhen, China.,The First Affiliated Hospital of Shenzhen University, Health Science Center, Shenzhen Second People's Hospital, Shenzhen, China
| | - Siyu Xie
- RNA Biomedical Institute, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Quanhui Xu
- Key Laboratory of Stem Cells and Tissue Engineering, Zhongshan School of Medicine, Sun Yat-sen University, Ministry of Education, Guangzhou, China
| | - Lisha Yuan
- Key Laboratory of Stem Cells and Tissue Engineering, Zhongshan School of Medicine, Sun Yat-sen University, Ministry of Education, Guangzhou, China
| | - Jin Wang
- Key Laboratory of Stem Cells and Tissue Engineering, Zhongshan School of Medicine, Sun Yat-sen University, Ministry of Education, Guangzhou, China
| | - Linjia Jiang
- RNA Biomedical Institute, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Lisha Mou
- Shenzhen Lansi Institute of Artificial Intelligence in Medicine, Shenzhen, China
| | - Dongjun Lin
- Department of Hematology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Meng Zhao
- Department of Hematology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China.,Shenzhen Lansi Institute of Artificial Intelligence in Medicine, Shenzhen, China.,Key Laboratory of Stem Cells and Tissue Engineering, Zhongshan School of Medicine, Sun Yat-sen University, Ministry of Education, Guangzhou, China
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Du J, Jing J, Yuan Y, Feng J, Han X, Chen S, Li X, Peng W, Xu J, Ho TV, Jiang X, Chai Y. Arid1a-Plagl1-Hh signaling is indispensable for differentiation-associated cell cycle arrest of tooth root progenitors. Cell Rep 2021; 35:108964. [PMID: 33826897 PMCID: PMC8132592 DOI: 10.1016/j.celrep.2021.108964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 02/10/2021] [Accepted: 03/17/2021] [Indexed: 12/04/2022] Open
Abstract
Chromatin remodelers often show broad expression patterns in multiple cell types yet can elicit cell-specific effects in development and diseases. Arid1a binds DNA and regulates gene expression during tissue development and homeostasis. However, it is unclear how Arid1a achieves its functional specificity in regulating progenitor cells. Using the tooth root as a model, we show that loss of Arid1a impairs the differentiation-associated cell cycle arrest of tooth root progenitors through Hedgehog (Hh) signaling regulation, leading to shortened roots. Our data suggest that Plagl1, as a co-factor, endows Arid1a with its cell-type/spatial functional specificity. Furthermore, we show that loss of Arid1a leads to increased expression of Arid1b, which is also indispensable for odontoblast differentiation but is not involved in regulation of Hh signaling. This study expands our knowledge of the intricate interactions among chromatin remodelers, transcription factors, and signaling molecules during progenitor cell fate determination and lineage commitment.
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Affiliation(s)
- Jiahui Du
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA 90033, USA; Department of Prosthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Junjun Jing
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA 90033, USA
| | - Yuan Yuan
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA 90033, USA
| | - Jifan Feng
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA 90033, USA
| | - Xia Han
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA 90033, USA
| | - Shuo Chen
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA 90033, USA
| | - Xiang Li
- Department of Physics, George Washington University, Washington, DC 20052, USA
| | - Weiqun Peng
- Department of Physics, George Washington University, Washington, DC 20052, USA
| | - Jian Xu
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA 90033, USA
| | - Thach-Vu Ho
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA 90033, USA
| | - Xinquan Jiang
- Department of Prosthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Yang Chai
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA 90033, USA.
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35
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Rodent incisor and molar dental follicles show distinct characteristics in tooth eruption. Arch Oral Biol 2021; 126:105117. [PMID: 33845260 DOI: 10.1016/j.archoralbio.2021.105117] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 03/30/2021] [Accepted: 03/31/2021] [Indexed: 02/08/2023]
Abstract
OBJECTIVE Rodent incisors and molars show different eruption patterns. Dental follicles and their interaction with dental epithelia play key roles in tooth eruption. However, little is known about the differences between incisor dental follicle (IF) and molar dental follicle (MF) during tooth eruption of rodents. This study aimed to investigate the differences between IF and MF during tooth eruption under induction with cervical-loop cells (CLC) and Hertwig's epithelial root sheath (HERS) cells of rats. MATERIALS AND METHODS CLC, HERS, IF, MF cells were isolated from 10 postnatal day 7 rats and identified by immunofluorescence staining. CLC or HERS cells-derived conditioned medium (CM) was obtained to induce IF and MF cells. Cell proliferation, mineralization, gene and protein expression related to tooth eruption were detected, and histological analysis was also performed. RESULTS The osteogenic differentiation and mineralization abilities of IF cells were stronger than those of MF cells. Both CLC and HERS cells-derived CM enhanced these abilities of IF cells, whereas they showed the opposite effect on MF cells. At 7, 10, and 15 d after birth, IF cells expressed more OPG and less RANKL than MF cells. CONCLUSIONS IF and MF cells present distinct characteristics in tooth eruption, CLC and HERS cells have significant inductive effects on them.
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Chen Q, Zheng L, Zhang Y, Huang X, Wang F, Li S, Yang Z, Liang F, Hu J, Jiang Y, Li Y, Zhou P, Luo W, Zhang H. Special AT-rich sequence-binding protein 2 (Satb2) synergizes with Bmp9 and is essential for osteo/odontogenic differentiation of mouse incisor mesenchymal stem cells. Cell Prolif 2021; 54:e13016. [PMID: 33660290 PMCID: PMC8016638 DOI: 10.1111/cpr.13016] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 02/15/2021] [Accepted: 02/16/2021] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVES Mouse incisor mesenchymal stem cells (MSCs) have self-renewal ability and osteo/odontogenic differentiation potential. However, the mechanism controlling the continuous self-renewal and osteo/odontogenic differentiation of mouse incisor MSCs remains unclear. Special AT-rich sequence-binding protein 2 (SATB2) positively regulates craniofacial patterning, bone development and regeneration, whereas SATB2 deletion or mutation leads to craniomaxillofacial dysplasia and delayed tooth and root development, similar to bone morphogenetic protein (BMP) loss-of-function phenotypes. However, the detailed mechanism underlying the SATB2 role in odontogenic MSCs is poorly understood. The aim of this study was to investigate whether SATB2 can regulate self-renewal and osteo/odontogenic differentiation of odontogenic MSCs. MATERIALS AND METHODS Satb2 expression was detected in the rapidly renewing mouse incisor mesenchyme by immunofluorescence staining, quantitative RT-PCR and Western blot analysis. Ad-Satb2 and Ad-siSatb2 were constructed to evaluate the effect of Satb2 on odontogenic MSCs self-renewal and osteo/odontogenic differentiation properties and the potential role of Satb2 with the osteogenic factor bone morphogenetic protein 9 (Bmp9) in vitro and in vivo. RESULTS Satb2 was found to be expressed in mesenchymal cells and pre-odontoblasts/odontoblasts. We further discovered that Satb2 effectively enhances mouse incisor MSCs self-renewal. Satb2 acted synergistically with the potent osteogenic factor Bmp9 in inducing osteo/odontogenic differentiation of mouse incisor MSCs in vitro and in vivo. CONCLUSIONS Satb2 promotes self-renewal and osteo/odontogenic differentiation of mouse incisor MSCs. Thus, Satb2 can cooperate with Bmp9 as a new efficacious bio-factor for osteogenic regeneration and tooth engineering.
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Affiliation(s)
- Qiuman Chen
- Chongqing Key Laboratory for Oral Diseases and Biomedical SciencesThe Affiliated Hospital of Stomatology of Chongqing Medical UniversityChongqingChina
- Department of Pediatric DentistryThe Affiliated Stomatology Hospital, Chongqing Medical UniversityChongqingChina
| | - Liwen Zheng
- Chongqing Key Laboratory for Oral Diseases and Biomedical SciencesThe Affiliated Hospital of Stomatology of Chongqing Medical UniversityChongqingChina
- Department of Pediatric DentistryThe Affiliated Stomatology Hospital, Chongqing Medical UniversityChongqingChina
| | - Yuxin Zhang
- Chongqing Key Laboratory for Oral Diseases and Biomedical SciencesThe Affiliated Hospital of Stomatology of Chongqing Medical UniversityChongqingChina
- Department of Pediatric DentistryThe Affiliated Stomatology Hospital, Chongqing Medical UniversityChongqingChina
| | - Xia Huang
- Chongqing Key Laboratory for Oral Diseases and Biomedical SciencesThe Affiliated Hospital of Stomatology of Chongqing Medical UniversityChongqingChina
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqingChina
| | - Feilong Wang
- Chongqing Key Laboratory for Oral Diseases and Biomedical SciencesThe Affiliated Hospital of Stomatology of Chongqing Medical UniversityChongqingChina
- Department of Pediatric DentistryThe Affiliated Stomatology Hospital, Chongqing Medical UniversityChongqingChina
| | - Shuang Li
- Chongqing Key Laboratory for Oral Diseases and Biomedical SciencesThe Affiliated Hospital of Stomatology of Chongqing Medical UniversityChongqingChina
- Department of Pediatric DentistryThe Affiliated Stomatology Hospital, Chongqing Medical UniversityChongqingChina
| | - Zhuohui Yang
- Chongqing Key Laboratory for Oral Diseases and Biomedical SciencesThe Affiliated Hospital of Stomatology of Chongqing Medical UniversityChongqingChina
- Department of Pediatric DentistryThe Affiliated Stomatology Hospital, Chongqing Medical UniversityChongqingChina
| | - Fang Liang
- Chongqing Key Laboratory for Oral Diseases and Biomedical SciencesThe Affiliated Hospital of Stomatology of Chongqing Medical UniversityChongqingChina
- Department of Pediatric DentistryThe Affiliated Stomatology Hospital, Chongqing Medical UniversityChongqingChina
| | - Jing Hu
- Chongqing Key Laboratory for Oral Diseases and Biomedical SciencesThe Affiliated Hospital of Stomatology of Chongqing Medical UniversityChongqingChina
- Department of Pediatric DentistryThe Affiliated Stomatology Hospital, Chongqing Medical UniversityChongqingChina
| | - Yucan Jiang
- Chongqing Key Laboratory for Oral Diseases and Biomedical SciencesThe Affiliated Hospital of Stomatology of Chongqing Medical UniversityChongqingChina
- Department of Pediatric DentistryThe Affiliated Stomatology Hospital, Chongqing Medical UniversityChongqingChina
| | - Yeming Li
- Chongqing Key Laboratory for Oral Diseases and Biomedical SciencesThe Affiliated Hospital of Stomatology of Chongqing Medical UniversityChongqingChina
- Department of Pediatric DentistryThe Affiliated Stomatology Hospital, Chongqing Medical UniversityChongqingChina
| | - Pengfei Zhou
- Chongqing Key Laboratory for Oral Diseases and Biomedical SciencesThe Affiliated Hospital of Stomatology of Chongqing Medical UniversityChongqingChina
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqingChina
| | - Wenping Luo
- Chongqing Key Laboratory for Oral Diseases and Biomedical SciencesThe Affiliated Hospital of Stomatology of Chongqing Medical UniversityChongqingChina
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqingChina
| | - Hongmei Zhang
- Chongqing Key Laboratory for Oral Diseases and Biomedical SciencesThe Affiliated Hospital of Stomatology of Chongqing Medical UniversityChongqingChina
- Department of Pediatric DentistryThe Affiliated Stomatology Hospital, Chongqing Medical UniversityChongqingChina
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Fresia R, Marangoni P, Burstyn-Cohen T, Sharir A. From Bite to Byte: Dental Structures Resolved at a Single-Cell Resolution. J Dent Res 2021; 100:897-905. [PMID: 33764175 PMCID: PMC8293759 DOI: 10.1177/00220345211001848] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The systematic classification of the cells that compose a tissue or an organ is key to understanding how these cells cooperate and interact as a functional unit. Our capacity to detect features that define cell identity has evolved from morphological and chemical analyses, through the use of predefined genetic markers, to unbiased transcriptomic and epigenetic profiling. The innovative technology of single-cell RNA sequencing (scRNA-seq) enables transcriptional profiling of thousands of individual cells. Since its development, scRNA-seq has been extensively applied to numerous organs and tissues in a wide range of animal models and human samples, thereby providing a plethora of fundamental biological insights into their development, homeostasis, and pathology. In this review, we present the findings of 3 recent studies that employed scRNA-seq to unravel the complexity of cellular composition in mammalian teeth. These findings offer an unprecedented catalogue of cell types in the mouse incisor, which is a convenient model system for studying continuous tooth growth. These studies identified novel cell types in the tooth epithelium and mesenchyme, as well as new markers for known cell types. Computational analyses of the data also uncovered the lineage and dynamics of cell states during ameloblast and odontoblast differentiation during both normal homeostasis and injury repair. The transcriptional differences between the mouse incisor and mouse and human molars uncover species-specific as well as shared features in tooth cell composition. Here, we highlight these findings and discuss important similarities and differences between these studies. We also discuss potential future applications of scRNA-seq in dental research and dentistry. Together, these studies demonstrate how the rapidly evolving technology of scRNA-seq can advance the study of tooth development and function and provide putative targets for regenerative approaches.
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Affiliation(s)
- R Fresia
- The Institute of Dental Sciences, Faculty of Dental Medicine, Hebrew University, Jerusalem, Israel
| | - P Marangoni
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, CA, USA
| | - T Burstyn-Cohen
- The Institute of Dental Sciences, Faculty of Dental Medicine, Hebrew University, Jerusalem, Israel
| | - A Sharir
- The Institute of Dental Sciences, Faculty of Dental Medicine, Hebrew University, Jerusalem, Israel
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38
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Jing D, Li C, Yao K, Xie X, Wang P, Zhao H, Feng JQ, Zhao Z, Wu Y, Wang J. The vital role of Gli1 + mesenchymal stem cells in tissue development and homeostasis. J Cell Physiol 2021; 236:6077-6089. [PMID: 33533019 DOI: 10.1002/jcp.30310] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 01/04/2021] [Accepted: 01/21/2021] [Indexed: 02/05/2023]
Abstract
The hedgehog (Hh) signaling pathway plays an essential role in both tissue development and homeostasis. Glioma-associated oncogene homolog 1 (Gli1) is one of the vital transcriptional factors as well as the direct target gene in the Hh signaling pathway. The cells expressing the Gli1 gene (Gli1+ cells) have been identified as mesenchymal stem cells (MSCs) that are responsible for various tissue developments, homeostasis, and injury repair. This review outlines some recent discoveries on the crucial roles of Gli1+ MSCs in the development and homeostasis of varieties of hard and soft tissues.
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Affiliation(s)
- Dian Jing
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Periodontics, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Chaoyuan Li
- Department of Oral Implantology, School and Hospital of Stomatology, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Tongji University, Shanghai, China
| | - Ke Yao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Periodontics, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xudong Xie
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Periodontics, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Peiqi Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Periodontics, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Hu Zhao
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, Texas, USA
| | - Jian Q Feng
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, Texas, USA
| | - Zhihe Zhao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Periodontics, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yafei Wu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Periodontics, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jun Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Periodontics, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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