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Koh J, Liu J, Poon CH, Kang J, Basabrain MS, Lim LW, Zhang C. Transplantation of Neural Progenitor Cells Derived from Stem Cells from Apical Papilla Through Small-Molecule Induction in a Rat Model of Sciatic Nerve Injury. Tissue Eng Regen Med 2024; 21:867-879. [PMID: 38904732 PMCID: PMC11286922 DOI: 10.1007/s13770-024-00648-y] [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: 02/04/2024] [Revised: 04/22/2024] [Accepted: 04/28/2024] [Indexed: 06/22/2024] Open
Abstract
BACKGROUND Stem cell-based transplantation therapy holds promise for peripheral nerve injury treatment, but adult availability is limited. A cell culture protocol utilizing a small-molecule cocktail effectively reprogrammed stem cells from apical papilla (SCAPs) into neural progenitor cells, subsequently differentiating into neuron-like cells. This study aims to evaluate neural-induced SCAPs, with and without small-molecule cocktail, for sciatic nerve repair potential. METHODS A scaffold-free cell sheet technique was used to construct a three-dimensional cell sheet. Subsequently, this cell sheet was carefully rolled into a tube and seamlessly inserted into a collagen conduit, which was then transplanted into a 5 mm sciatic nerve injury rat model. Functional sciatic nerve regeneration was evaluated via toe spread test, walking track analysis and gastrocnemius muscle weight. Additionally, degree of sciatic nerve regeneration was determined based on total amount of myelinated fibers. RESULTS Small-molecule cocktail induced SCAPs enhanced motor function recovery, evident in improved sciatic function index and gastrocnemius muscle retention. We also observed better host myelinated fiber retention than undifferentiated SCAPs or neural-induced SCAPs without small-molecule cocktail. However, clusters of neuron-like cell bodies (surrounded by sparse myelinated fibers) were found in all cell sheet-implanted groups in the implantation region. This suggests that while the implanted cells likely survived transplantation, integration was poor and would likely hinder long-term recovery by occupying the space needed for host nerve fibers to project through. CONCLUSION Neural-induced SCAPs with small-molecule cocktail demonstrated promising benefits for nerve repair; further research is needed to improve its integration and optimize its potential for long-term recovery.
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Affiliation(s)
- Junhao Koh
- Restorative Dental Sciences, Endodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - Junqing Liu
- Restorative Dental Sciences, Endodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - Chi Him Poon
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Jun Kang
- Restorative Dental Sciences, Endodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - Mohammed S Basabrain
- Restorative Dental Sciences, Endodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
- Restorative Dental Sciences, Faculty of Dentistry, Umm Al-Qura, University, Makkah, Saudi Arabia
| | - Lee Wei Lim
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China.
| | - Chengfei Zhang
- Restorative Dental Sciences, Endodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
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Zhang H, Li L, Sun X, Hou B, Luo C. Research and development of microenvironment's influence on stem cells from the apical papilla - construction of novel research microdevices: tooth-on-a-chip. Biomed Microdevices 2024; 26:33. [PMID: 39023652 DOI: 10.1007/s10544-024-00715-0] [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] [Accepted: 06/29/2024] [Indexed: 07/20/2024]
Abstract
Stem cells are crucial in tissue engineering, and their microenvironment greatly influences their behavior. Among the various dental stem cell types, stem cells from the apical papilla (SCAPs) have shown great potential for regenerating the pulp-dentin complex. Microenvironmental cues that affect SCAPs include physical and biochemical factors. To research optimal pulp-dentin complex regeneration, researchers have developed several models of controlled biomimetic microenvironments, ranging from in vivo animal models to in vitro models, including two-dimensional cultures and three-dimensional devices. Among these models, the most powerful tool is a microfluidic microdevice, a tooth-on-a-chip with high spatial resolution of microstructures and precise microenvironment control. In this review, we start with the SCAP microenvironment in the regeneration of pulp-dentin complexes and discuss research models and studies related to the biological process.
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Affiliation(s)
- Hexuan Zhang
- Center for Microscope Enhanced Dentistry, School of Stomatology, Capital Medical University, Beijing, China
- Department of Endodontics and Operative Dentistry, School of Stomatology, Capital Medical University, Beijing, China
| | - Lingjun Li
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, China
| | - Xiaoqiang Sun
- Department of Endodontics and Operative Dentistry, School of Stomatology, Capital Medical University, Beijing, China.
| | - Benxiang Hou
- Center for Microscope Enhanced Dentistry, School of Stomatology, Capital Medical University, Beijing, China.
| | - Chunxiong Luo
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, China.
- The State Key Laboratory for Artificial Microstructures and Mesoscopic Physics, School of Physics, Peking University, Beijing, China.
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Kahler B, Lu J, Taha NA. Regenerative endodontic treatment and traumatic dental injuries. Dent Traumatol 2024. [PMID: 38989999 DOI: 10.1111/edt.12979] [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: 03/15/2024] [Revised: 06/07/2024] [Accepted: 06/11/2024] [Indexed: 07/12/2024]
Abstract
Pulp necrosis is the most common complication following dental trauma and is often associated with apical periodontitis. The management of these teeth is challenging in terms of large root canals, open apices, thin dentinal walls, and short roots. Over decades the conventional treatment for these teeth was calcium hydroxide apexification, a time-consuming procedure despite high success rates. Subsequently after the introduction of mineral trioxide aggregate and hydraulic calcium silicate materials single visit apical plug procedures became increasingly practiced with comparable success rates to the conventional apexification. The search continued afterward for a clinical procedure that may stimulate further root development and apical closure to avoid the long-term complication of root fracture after apexification. Regenerative procedures using stem cells derived from the apical papilla and blood clots as scaffolds were then introduced for the management of immature teeth, with variable protocols and success rates. This review will cover the evidence available and current position of regenerative endodontic procedures in traumatized immature teeth with apical periodontitis, in terms of clinical protocols, outcome, and potential prognostic factors.
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Affiliation(s)
- Bill Kahler
- Department of Restorative and Reconstructive Dentistry, School of Dentistry, University of Sydney, Camperdown, New South Wales, Australia
| | - Jing Lu
- Fujian Key Laboratory of Oral Diseases, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Nessrin A Taha
- Conservative Dentistry Department, Jordan University of Science and Technology, Irbid, Jordan
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Gu T, Guo R, Fang Y, Xiao Y, Chen L, Li N, Ge XK, Shi Y, Wu J, Yan M, Yu J, Li Z. METTL3-mediated pre-miR-665/DLX3 m 6A methylation facilitates the committed differentiation of stem cells from apical papilla. Exp Mol Med 2024; 56:1426-1438. [PMID: 38825638 PMCID: PMC11263550 DOI: 10.1038/s12276-024-01245-8] [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: 08/13/2023] [Revised: 01/16/2024] [Accepted: 03/11/2024] [Indexed: 06/04/2024] Open
Abstract
Methyltransferase-like 3 (METTL3) is a crucial element of N6-methyladenosine (m6A) modifications and has been extensively studied for its involvement in diverse biological and pathological processes. In this study, we explored how METTL3 affects the differentiation of stem cells from the apical papilla (SCAPs) into odonto/osteoblastic lineages through gain- and loss-of-function experiments. The m6A modification levels were assessed using m6A dot blot and activity quantification experiments. In addition, we employed Me-RIP microarray experiments to identify specific targets modified by METTL3. Furthermore, we elucidated the molecular mechanism underlying METTL3 function through dual-luciferase reporter gene experiments and rescue experiments. Our findings indicated that METTL3+/- mice exhibited significant root dysplasia and increased bone loss. The m6A level and odonto/osteoblastic differentiation capacity were affected by the overexpression or inhibition of METTL3. This effect was attributed to the acceleration of pre-miR-665 degradation by METTL3-mediated m6A methylation in cooperation with the "reader" protein YTHDF2. Additionally, the targeting of distal-less homeobox 3 (DLX3) by miR-665 and the potential direct regulation of DLX3 expression by METTL3, mediated by the "reader" protein YTHDF1, were demonstrated. Overall, the METTL3/pre-miR-665/DLX3 pathway might provide a new target for SCAP-based tooth root/maxillofacial bone tissue regeneration.
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Affiliation(s)
- Tingjie Gu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University and Department of Stomatology, Nanjing Medical University, Nanjing, China
- Department of Endodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Rong Guo
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University and Department of Stomatology, Nanjing Medical University, Nanjing, China
- Department of Endodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Yuxin Fang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University and Department of Stomatology, Nanjing Medical University, Nanjing, China
- Department of Endodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Ya Xiao
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University and Department of Stomatology, Nanjing Medical University, Nanjing, China
- Department of Endodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Luyao Chen
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University and Department of Stomatology, Nanjing Medical University, Nanjing, China
- Department of Endodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Na Li
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University and Department of Stomatology, Nanjing Medical University, Nanjing, China
- Department of Endodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Xingyun Kelesy Ge
- Faculty of Dentistry, The University of Hong Kong, 34 Hospital Road, Hong Kong SAR, China
| | - Yijia Shi
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University and Department of Stomatology, Nanjing Medical University, Nanjing, China
- Department of Endodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Jintao Wu
- Department of Endodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Ming Yan
- Department of Endodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Jinhua Yu
- Department of Endodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China.
| | - Zehan Li
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University and Department of Stomatology, Nanjing Medical University, Nanjing, China.
- Department of Endodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China.
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Meto A, Sula A, Peppoloni S, Meto A, Blasi E. Leveraging Dental Stem Cells for Oral Health during Pregnancy: A Concise Review. Dent J (Basel) 2024; 12:127. [PMID: 38786525 PMCID: PMC11120089 DOI: 10.3390/dj12050127] [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: 02/29/2024] [Revised: 04/12/2024] [Accepted: 05/01/2024] [Indexed: 05/25/2024] Open
Abstract
Pregnancy induces significant changes in oral health because of hormonal fluctuations, making it a crucial period for preventive measures. Dental stem cells (DSCs), particularly those derived from the dental pulp and periodontal ligaments, offer promising avenues for regenerative therapies and, possibly, preventive interventions. While the use of DSCs already includes various applications in regenerative dentistry in the general population, their use during pregnancy requires careful consideration. This review explores recent advancements, challenges, and prospects in using DSCs to address oral health issues, possibly during pregnancy. Critical aspects of the responsible use of DSCs in pregnant women are discussed, including safety, ethical issues, regulatory frameworks, and the need for interdisciplinary collaborations. We aimed to provide a comprehensive understanding of leveraging DSCs to improve maternal oral health.
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Affiliation(s)
- Aida Meto
- Department of Dentistry, Faculty of Dental Sciences, University of Aldent, 1007 Tirana, Albania;
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Interest in Transplant, Oncology and Regenerative Medicine, Laboratory of Microbiology and Virology, University of Modena and Reggio Emilia, 41125 Modena, Italy; (S.P.); (E.B.)
- Department of Conservative Dentistry and Endodontics, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth, Pimpri, Pune 411018, Maharashtra, India
| | - Ana Sula
- Department of Obstetrics and Gynecology, American Hospital, 1060 Tirana, Albania;
| | - Samuele Peppoloni
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Interest in Transplant, Oncology and Regenerative Medicine, Laboratory of Microbiology and Virology, University of Modena and Reggio Emilia, 41125 Modena, Italy; (S.P.); (E.B.)
| | - Agron Meto
- Department of Dentistry, Faculty of Dental Sciences, University of Aldent, 1007 Tirana, Albania;
| | - Elisabetta Blasi
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Interest in Transplant, Oncology and Regenerative Medicine, Laboratory of Microbiology and Virology, University of Modena and Reggio Emilia, 41125 Modena, Italy; (S.P.); (E.B.)
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Mascarenhas R, Hegde S, Manaktala N. Chitosan nanoparticle applications in dentistry: a sustainable biopolymer. Front Chem 2024; 12:1362482. [PMID: 38660569 PMCID: PMC11039901 DOI: 10.3389/fchem.2024.1362482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 03/26/2024] [Indexed: 04/26/2024] Open
Abstract
The epoch of Nano-biomaterials and their application in the field of medicine and dentistry has been long-lived. The application of nanotechnology is extensively used in diagnosis and treatment aspects of oral diseases. The nanomaterials and its structures are being widely involved in the production of medicines and drugs used for the treatment of oral diseases like periodontitis, oral carcinoma, etc. and helps in maintaining the longevity of oral health. Chitosan is a naturally occurring biopolymer derived from chitin which is seen commonly in arthropods. Chitosan nanoparticles are the latest in the trend of nanoparticles used in dentistry and are becoming the most wanted biopolymer for use toward therapeutic interventions. Literature search has also shown that chitosan nanoparticles have anti-tumor effects. This review highlights the various aspects of chitosan nanoparticles and their implications in dentistry.
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Affiliation(s)
- Roma Mascarenhas
- Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences Mangalore, Manipal Academy of Higher Education, Manipal, India
| | - Shreya Hegde
- Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences Mangalore, Manipal Academy of Higher Education, Manipal, India
| | - Nidhi Manaktala
- Department of Oral Pathology and Microbiology, Manipal College of Dental Sciences Mangalore, Manipal Academy of Higher Education, Manipal, India
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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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Rewthamrongsris P, Phothichailert S, Chokechanachaisakul U, Kornsuthisopon C, Osathanon T. Simvastatin Induces Apoptosis but Attenuates Migration in SCAPs. Int Dent J 2024; 74:352-358. [PMID: 38220513 PMCID: PMC10988248 DOI: 10.1016/j.identj.2023.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 10/15/2023] [Accepted: 10/20/2023] [Indexed: 01/16/2024] Open
Abstract
AIM Simvastatin has emerged as having a promising role in controlling stem cell behaviours. This study aimed to evaluate the effects of simvastatin on the viability, growth, and migration of stem cells isolated from apical papillae (SCAPs) in vitro. METHODS SCAPs were isolated and characterised. The viability and proliferation were assessed using live/dead and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assays, respectively. Cell migration was evaluated using scratch assays. Cell cycle progression and apoptosis were examined using flow cytometry analysis. RESULTS Simvastatin at a concentration of 100 to 1000 nM did not exhibit cytotoxicity. Simvastatin reduced cell numbers at days 3 and 7. In addition, simvastatin markedly decreased colony formation in both colony number and cell density in a dose-dependent manner. An increase in apoptosis was observed at day 7. There was statistically significant increased in sub G0 population. An in vitro cell migration was attenuated in a dose-dependent manner. CONCLUSION Simvastatin affects SCAPs' viability, proliferation, and cell migration. The reduction of cell viability at day 7 could be due to apoptotic induction.
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Affiliation(s)
- Paak Rewthamrongsris
- Center of Excellence for Dental Stem Cell Biology and Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Suphalak Phothichailert
- Center of Excellence for Dental Stem Cell Biology and Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | | | - Chatvadee Kornsuthisopon
- Center of Excellence for Dental Stem Cell Biology and Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thanaphum Osathanon
- Center of Excellence for Dental Stem Cell Biology and Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.
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Alrashidi MA, Badawi MF, Elbeltagy MG, Badr AE. The Effect of Glycyrrhizin on the Viability and Proliferation of Dental Pulp Stem Cells Compared to Intracanal Medicaments. J Contemp Dent Pract 2024; 25:267-275. [PMID: 38690701 DOI: 10.5005/jp-journals-10024-3652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
AIM To study the effect of glycyrrhizin (GA) on the viability and proliferation of dental pulp stem cells (DPSCs) compared with intracanal medicaments. MATERIALS AND METHODS Third molars of an adult donor were used to obtain the DPSCs. Flow cytometry was utilized to conduct phenotypic analysis for DPSCs. The methyl-thiazol tetrazolium (MTT) test was used to detect the cell viability. Cell proliferation assay was conducted at distinct time intervals: 3, 5, and 7 days. RESULTS The flow cytometry analysis verified the positive expression of mesenchymal cell surface antigen molecules (CD73, CD90, and CD105) and the absence of hematological markers (CD14, CD34, and CD45) in the DPSCs. The cells that treated with concentrations more than 0.5 mg/mL of Ca(OH2) and triple antibiotic paste (TAP) gave significant decrease in viability in comparison to the untreated cells (p < 0.05). Also, the cells treated with concentrations 50 and 25 µM of GA showed no significant difference compared with the untreated cells (p > 0.05), while concentrations 12.5 and 6.25 µM expressed a significant increase in viability compared with the untreated cells (p < 0.05). At 7 days, cells treated with the three different concentrations of GA (12.5, 25, and 50 µM) demonstrated a significant increase in cell density compared with Ca(OH)2 and TAP-treated cells (p < 0.05). CONCLUSION Based upon the potential of GA on DPSCs proliferation compared with Ca(OH)2 and TAP, It is conceivable to acknowledge that GA could be used as an intracanal medicaments for revascularization process of necrotic immature teeth. CLINICAL SIGNIFICANCE This study emphasizes the significance of assessing alternative root canal medicaments and their impact on the proliferation and viability of DPSCs. The results regarding GA, specifically its impact on the viability and growth of DPSCs, provide essential understanding for its potential application as an intracanal medicine. This study adds to the continuous endeavors in identifying safer and more efficient intracanal therapies, which are essential for improving patient outcomes in endodontic operations. How to cite this article: Alrashidi MA, Badawi MF, Elbeltagy MG, et al. The Effect of Glycyrrhizin on the Viability and Proliferation of Dental Pulp Stem Cells Compared to Intracanal Medicaments. J Contemp Dent Pract 2024;25(3):267-275.
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Affiliation(s)
- Mohammad A Alrashidi
- Department of Endodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt, Orcid: https://orcid.org/0009-0001-8556-1821
| | - Manal F Badawi
- Department Dental Biomaterials, Faculty of Dentistry, Mansoura University, Mansoura, Egypt, Orcid: https://orcid.org/0000-0001-9979-4354
| | - Mohamed G Elbeltagy
- Department of Stem Cells Research, Urology and Nephrology Center, Mansoura University, Mansoura, Egypt, Orcid: https://orcid.org/0000-0003-3309-4480
| | - Amany E Badr
- Department of Endodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt, Phone: +201200211211, e-mail: , Orcid: https://orcid.org/0000-0002-3811-149X
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Saberi E, Heidari Z, Mahmoudzadeh-Sagheb H, Narouei M, Jafari L, Mahmoudzadeh-Sagheb A, Saadatian M. Morphometric parameters of dental pulp in immature teeth in a sheep model after mechanical pulp exposure and restoration with reinforced zinc oxide-eugenol. Dent Res J (Isfahan) 2024; 21:17. [PMID: 38476710 PMCID: PMC10929729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 11/07/2023] [Accepted: 12/10/2023] [Indexed: 03/14/2024] Open
Abstract
Background The aim of the study was to investigate the morphometric parameters of dental pulp in open apices immature teeth in a sheep model after mechanical pulp exposure and restoration with reinforced zinc oxide-eugenol. Materials and Methods In this experimental study, a total of 12 immature mandibular central incisors from six adult male sheep, weighing 30-40 kg and with the age of 1 year old with Merino race were examined. After anesthesia, the pulps of the teeth in the case group were mechanically exposed and then were restored with reinforced zinc oxide-eugenol and amalgam. In the control group, the teeth remained intact. The animals were sacrificed at intervals of 2, 4, 6, and 8 weeks (E2, E4, E6, and E8) in the case and 2 and 8 weeks (C2 and C8) in the control groups. Then, their teeth were removed with the surrounding supporting tissues and alveolar bones. Tissue processing and staining were done, and the sections were examined under a light microscope. The Kruskal-Wallis and Mann-Whitney U tests were used to analyze the data and compare the changes between the two groups. P < 0.05 was considered statistically significant. Results In response to mechanical exposure, reparative or tertiary dentin was formed, and its thickness increased during the time of the study. The thickness of the odontoblastic layer in the E4 group was the highest amount. The pulp chamber diameter in the C2 group was significantly larger than the other groups, and the diameter of the apical foramen in the E8 was decreased significantly compared to the controls (P < 0.05). Conclusion In response to mechanical exposure and restoration with reinforced zinc oxide-eugenol, some morphometric parameters of the dental pulp changed significantly in the sheep model compared to the controls.
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Affiliation(s)
- Eshaghali Saberi
- Department of Endodontics, Oral and Dental Diseases Research Center, Faculty of Dentistry, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Zahra Heidari
- Infectious Diseases and Tropical Medicine Research Center, Resistant Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, Iran
- Department of Histology, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Hamidreza Mahmoudzadeh-Sagheb
- Infectious Diseases and Tropical Medicine Research Center, Resistant Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, Iran
- Department of Histology, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mahdieh Narouei
- Department of Histology, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Lida Jafari
- School of Dentistry, Zahedan University of Medical Sciences, Zahedan, Iran
| | | | - Mahmoud Saadatian
- School of Nursing and Midwifery, Zahedan University of Medical Sciences, Zahedan, Iran
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Raghavan A, Ghosh S. Influence of Graphene-Based Nanocomposites in Neurogenesis and Neuritogenesis: A Brief Summary. ACS APPLIED BIO MATERIALS 2024; 7:711-726. [PMID: 38265040 DOI: 10.1021/acsabm.3c00852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
Graphene is a prospective candidate for various biomedical applications, including drug transporters, bioimaging agents, and scaffolds for tissue engineering, thanks to its superior electrical conductivity and biocompatibility. The clinical issue of nerve regeneration and rehabilitation still has a major influence on people's lives. Nanomaterials based on graphene have been exploited extensively to promote nerve cell differentiation and proliferation. Their high electrical conductivity and mechanical robustness make them appropriate for nerve tissue engineering. Combining graphene with other substances, such as biopolymers, may transmit biochemical signals that support brain cell division, proliferation, and regeneration. The utilization of nanocomposites based on graphene in neurogenesis and neuritogenesis is the primary emphasis of this review. Here are some examples of the many synthetic strategies used. For neuritogenesis and neurogenesis, it has also been explored to combine electrical stimulation with graphene-based materials.
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Affiliation(s)
- Akshaya Raghavan
- Polymers & Functional Materials Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sutapa Ghosh
- Polymers & Functional Materials Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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Montenegro Raudales JL, Okuwa Y, Honda M. Dental Pulp Cell Transplantation Combined with Regenerative Endodontic Procedures Promotes Dentin Matrix Formation in Mature Mouse Molars. Cells 2024; 13:348. [PMID: 38391961 PMCID: PMC10886544 DOI: 10.3390/cells13040348] [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: 01/16/2024] [Revised: 02/06/2024] [Accepted: 02/11/2024] [Indexed: 02/24/2024] Open
Abstract
Regenerative endodontic procedures (REPs) are promising for dental pulp tissue regeneration; however, their application in permanent teeth remains challenging. We assessed the potential combination of an REP and local dental pulp cell (DPC) transplantation in the mature molars of C57BL/6 mice with (REP + DPC group) or without (REP group) transplantation of DPCs from green fluorescent protein (GFP) transgenic mice. After 4 weeks, the regenerated tissue was evaluated by micro-computed tomography and histological analyses to detect odontoblasts, vasculogenesis, and neurogenesis. DPCs were assessed for mesenchymal and pluripotency markers. Four weeks after the REP, the molars showed no signs of periapical lesions, and both the REP and REP + DPC groups exhibited a pulp-like tissue composed of a cellular matrix with vessels surrounded by an eosin-stained acellular matrix that resembled hard tissue. However, the REP + DPC group had a broader cellular matrix and uniquely contained odontoblast-like cells co-expressing GFP. Vasculogenesis and neurogenesis were detected in both groups, with the former being more prominent in the REP + DPC group. Overall, the REP was achieved in mature mouse molars and DPC transplantation improved the outcomes by inducing the formation of odontoblast-like cells and greater vasculogenesis.
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Affiliation(s)
- Jorge Luis Montenegro Raudales
- Department of Oral Anatomy, School of Dentistry, Aichi Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya 464-8650, Aichi, Japan; (Y.O.); (M.H.)
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Abo-Heikal MM, El-Shafei JM, Shouman SA, Roshdy NN. Evaluation of the efficacy of injectable platelet-rich fibrin versus platelet-rich plasma in the regeneration of traumatized necrotic immature maxillary anterior teeth: A randomized clinical trial. Dent Traumatol 2024; 40:61-75. [PMID: 37612879 DOI: 10.1111/edt.12881] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 08/25/2023]
Abstract
BACKGROUND/AIM This study aimed at comparing the regenerative potential of injectable platelet-rich fibrin (i-PRF) (Group 1) and platelet-rich plasma (Group 2) scaffolds. MATERIALS AND METHODS Twenty-three patients, aged from 9 to 24 years, having 24 immature traumatized necrotic maxillary anterior teeth, were enrolled. Teeth trauma was confirmed by patients' history. Preoperative three-dimensional scans were done. In the first visit, canals were irrigated with 1.5% sodium hypochlorite then medicated with calcium hydroxide. After 2 weeks, patients were randomly assigned into one of the treatment groups (n = 12). The platelet concentrate was applied after centrifuging 10 mL of autologous venous blood with respect to the centrifugation protocol for each platelet concentrate. Patients were recalled at 6 and 12 months posttreatment, during which clinical and radiographic examinations and assessment of pulp sensitivity were done. Three-dimensional scanning was done after 12 months. The increase in root length and decrease in root canal diameters were calculated at three canal levels. Statistical analysis was done using the paired t-test and the independent t-test. The significance level was set at p < .05. RESULTS There was no statistically significant difference between both groups regarding the increase in root length, decrease in coronal and middle canal diameters and the response to the electric pulp tester. Group (1) showed significantly greater decrease in apical canal diameter than Group (2) (p = .008). CONCLUSION I-PRF can be considered as a valid regenerative scaffold for clinical use and with regards to the easier preparation technique, it is more recommended than platelet-rich plasma.
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Kumari S, Sharma A, Singh A, Nagendra SB, Qurishi AA, Parmar NJ, Mehta DN. Use of Endodontic Procedures in Young Permanent Teeth. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2024; 16:S797-S799. [PMID: 38595543 PMCID: PMC11000935 DOI: 10.4103/jpbs.jpbs_1018_23] [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: 10/10/2023] [Revised: 10/20/2023] [Accepted: 10/23/2023] [Indexed: 04/11/2024] Open
Abstract
Background Regenerative endodontic procedures (REPs) have emerged as a promising treatment option for young permanent teeth with pulp necrosis, offering the potential for tissue repair and preservation. Materials and Methods A retrospective analysis was conducted on a cohort of 30 patients aged 8 to 16 years with pulp necrosis in young permanent teeth. The patients underwent REPs, including disinfection, triple antibiotic paste application, and a coronal barrier. Clinical and radiographic data were collected at baseline and follow-up appointments at 6, 12, and 24 months. Radiographs were analyzed for root lengthening, apical closure, and resolution of periapical lesions. Results The mean increase in root length after 24 months was 3.42 mm (SD ± 1.12 mm), and 90% of cases demonstrated complete apical closure. The overall success rate, defined as the absence of clinical symptoms and radiographic evidence of pathology, was 80. Conclusion REPs show promising outcomes in young permanent teeth with pulp necrosis, promoting root development, and apical closure.
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Affiliation(s)
- Sujata Kumari
- Department of Pedodontics and Preventive Dentistry, Central Speciality Hospital, Patna, Bihar, India
| | - Ankita Sharma
- Department of Pedodontics and Preventive Dentistry, PGIDS, Rohtak, Haryana, India
| | - Abhishek Singh
- Department of Conservative Dentistry and Endodontics, Bhabha College of Dental Sciences, Bhopal, Madhya Pradesh, India
| | - Sangala Bhavani Nagendra
- Department of Oral Pathology and Microbiology, Bharati Vidyapeeth Bharati Vidyapeeth Deemed University, Maharashtra, India
| | - Ahtesham A. Qurishi
- Department of Maxillofacial Surgery and Diagnostic Sciences, College of Dentistry, Jizan University, Saudi Arabia
| | - Nirav J. Parmar
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Science, Dharsinh Desai University, Nadiad, Gujarat, India
| | - Dhaval Niranjan Mehta
- Professor and Head, Department of Oral Medicine and Radiology, Narsinbhai Patel Dental College and Hospital, Sankalchand Patel University, Visnagar, Gujrat, India
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Liao Y, Pan T, Xing X. Regenerative Endodontic Treatment in Dentinogenesis Imperfecta-Induced Apical Periodontitis. Case Rep Dent 2024; 2024:5128588. [PMID: 38223911 PMCID: PMC10787646 DOI: 10.1155/2024/5128588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 11/28/2023] [Accepted: 12/21/2023] [Indexed: 01/16/2024] Open
Abstract
Pulp involvement of immature permanent teeth with dentinogenesis imperfecta is challenging and could lead to extraction. A case of dentinogenesis imperfecta-induced periapical periodontitis of an immature permanent tooth was treated with regenerative endodontic treatment (RET), and root maturation was observed in 12-month follow-up. An 8-year-old girl presented acute pain and swelling in central mandibular region. Clinical and radiographic examination revealed "shell teeth" appearance of teeth 31, 41, and 42. Periapical lesion of tooth 31 was observed. Tooth 41 was previously treated with apexification. RET was planned and carried out for the necrotic tooth (tooth 31) with dentinogenesis imperfecta. The 1-, 3-, 7-, and 12-month postoperative recall revealed complete healing of periapical lesions. Root maturation characterized by elongation of root, thickening of dentinal walls, and closure of root apex was observed with radiographic examinations. We show that RET could be a desirable treatment for necrotic immature permanent teeth with dentinogenesis imperfecta and lead to resolution of endodontic lesions as well as maturation of dental root. The findings of this case suggest that RET should be considered by endodontist and pediatric dentist to treat teeth with similar dental anomalies and apical periodontitis.
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Affiliation(s)
- Ying Liao
- Department of Pediatric Dentistry, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China
| | - Ting Pan
- Department of Pediatric Dentistry, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China
| | - Xianghui Xing
- Department of Pediatric Dentistry, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China
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Feli M, Taheri A, Mehrabani M. Revascularization of a Previously Treated Mandibular First Molar with Open Apices: A Case Report. IRANIAN ENDODONTIC JOURNAL 2024; 19:120-123. [PMID: 38577006 PMCID: PMC10988637 DOI: 10.22037/iej.v19i2.43321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 02/02/2024] [Accepted: 02/13/2024] [Indexed: 04/06/2024]
Abstract
In this case report, the regeneration method was used to treat the previously treated first molar, which presented with symptoms of pain during chewing and secondary acute apical periodontitis. Due to the importance of preserving the patient's permanent teeth in order to maintain optimal space and function, the regeneration treatment was performed in two visits and according to the American Association of Endodontists (AAE) guidelines. The continuation of tooth root development, healing of periapical radiolucency and positive response to sensibility test (cold test) were observed during follow-up radiographs at intervals of 6 months, 1 year & 2 year.
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Affiliation(s)
- Mojgan Feli
- Department of Endodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran;
| | - Anita Taheri
- Dentofacial Deformities Research Center, Research Institute of Dental Sciences, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahgol Mehrabani
- Department of Endodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran;
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Santilli F, Fabrizi J, Santacroce C, Caissutti D, Spinello Z, Candelise N, Lancia L, Pulcini F, Delle Monache S, Mattei V. Analogies and Differences Between Dental Stem Cells: Focus on Secretome in Combination with Scaffolds in Neurological Disorders. Stem Cell Rev Rep 2024; 20:159-174. [PMID: 37962698 PMCID: PMC10799818 DOI: 10.1007/s12015-023-10652-9] [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] [Accepted: 11/02/2023] [Indexed: 11/15/2023]
Abstract
Mesenchymal stem cells (MSCs) are well known for their beneficial effects, differentiation capacity and regenerative potential. Dental-derived MSCs (DSCs) are more easily accessible and have a non-invasive isolation method rather than MSCs isolated from other sources (umbilical cord, bone marrow, and adipose tissue). In addition, DSCs appear to have a relevant neuro-regenerative potential due to their neural crest origin. However, it is now known that the beneficial effects of MSCs depend, at least in part, on their secretome, referring to all the bioactive molecules (neurotrophic factors) released in the conditioned medium (CM) or in the extracellular vesicles (EVs) in particular exosomes (Exos). In this review, we described the similarities and differences between various DSCs. Our focus was on the secretome of DSCs and their applications in cell therapy for neurological disorders. For neuro-regenerative purposes, the secretome of different DSCs has been tested. Among these, the secretome of dental pulp stem cells and stem cells from human exfoliated deciduous teeth have been the most widely studied. Both CM and Exos obtained from DSCs have been shown to promote neurite outgrowth and neuroprotective effects as well as their combination with scaffold materials (to improve their functional integration in the tissue). For these reasons, the secretome obtained from DSCs in combination with scaffold materials may represent a promising tissue engineering approach for neuroprotective and neuro-regenerative treatments.
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Affiliation(s)
- Francesca Santilli
- Biomedicine and Advanced Technologies Rieti Center, "Sabina Universitas", Via A.M. Ricci 35/A, 02100, Rieti, Italy
| | - Jessica Fabrizi
- Department of Experimental Medicine, "Sapienza" University, Viale Regina Elena 324, 00161, Rome, Italy
| | - Costantino Santacroce
- Biomedicine and Advanced Technologies Rieti Center, "Sabina Universitas", Via A.M. Ricci 35/A, 02100, Rieti, Italy
| | - Daniela Caissutti
- Department of Experimental Medicine, "Sapienza" University, Viale Regina Elena 324, 00161, Rome, Italy
| | - Zaira Spinello
- Department of Experimental Medicine, "Sapienza" University, Viale Regina Elena 324, 00161, Rome, Italy
| | - Niccolò Candelise
- National Center for Drug Research and Evaluation, Istituto Superiore di Sanità, Viale Regina Elena, 29900161, Rome, Italy
| | - Loreto Lancia
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Via Vetoio, 67100, L'Aquila, Italy
| | - Fanny Pulcini
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Via Vetoio, 67100, L'Aquila, Italy
| | - Simona Delle Monache
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Via Vetoio, 67100, L'Aquila, Italy.
| | - Vincenzo Mattei
- Dipartimento di Scienze della Vita, della Salute e delle Professioni Sanitarie, Link Campus University, Via del Casale di San Pio V 44, 00165, Rome, Italy.
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Teawcharoensopa C, Srisuwan T. The potential use of ascorbic acid to recover the cellular senescence of lipopolysaccharide-induced human apical papilla cells: an in vitro study. Clin Oral Investig 2023; 28:49. [PMID: 38153550 DOI: 10.1007/s00784-023-05455-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Accepted: 12/18/2023] [Indexed: 12/29/2023]
Abstract
OBJECTIVES To examine the effect of lipopolysaccharide (LPS) on cellular senescence induction of human apical papilla cells (hAPCs) and evaluate the potential use of 50 μg/ml ascorbic acid to recover cellular senescence and regenerative functions. MATERIALS AND METHODS hAPCs were treated with LPS at 1 and 10 μg/ml either with or without 50 μg/ml ascorbic acid for 48 h. The cellular senescence biomarkers were analyzed by senescence-associated β-galactosidase (SA-β-gal) staining and senescence-related gene expression, p16 and p21. Cell migration, at 12 h and 24 h, was evaluated using a scratch wound assay. Mineralization potential was assessed at 21 days using Alizarin red S staining and dentine sialophosphoprotein (DSPP) and bone sialoprotein (BSP) gene expression. RESULTS 1 μg/ml and 10 μg/ml LPS stimulation for 48 h induced cellular senescence, as shown by remarkable SA-β-gal staining and p16 and p21 gene expression. The percentage of wound closure and mineralized formation was reduced. The co-incubation with ascorbic acid significantly down-regulated the level of SA-β-gal staining. The reduction of senescence-associated gene expressions was observed. Ascorbic acid improved cell migration, mineralized nodule formation, and the expression of DSPP and BSP genes in LPS-treated hAPCs. CONCLUSIONS LPS significantly promoted cellular senescence on hAPCs and diminished the cell function capacity. Co-presence of ascorbic acid could impede cellular senescence and possibly improve the regenerative capacity of LPS-induced senescent hAPCs in vitro. CLINICAL RELEVANCE The data support the in vitro potential benefit of ascorbic acid on cellular senescence recovery of apical papilla cells.
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Affiliation(s)
- Chananporn Teawcharoensopa
- Department of Restorative Dentistry and Periodontology, Faculty of Dentistry, Chiang Mai University, Chiang Mai, TH, Thailand
- Sikhoraphum Hospital Dental Department, Surin, TH, Thailand
| | - Tanida Srisuwan
- Department of Restorative Dentistry and Periodontology, Faculty of Dentistry, Chiang Mai University, Chiang Mai, TH, Thailand.
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Hu G, Wu L, Xue K, Han H, Sun Y, Gan K, Zhu J, Shi Q, Du T. Differential expression of circular RNAs in interleukin 6-promoted osteogenic differentiation of human stem cells from apical papilla. Clin Oral Investig 2023; 27:7765-7776. [PMID: 37962668 DOI: 10.1007/s00784-023-05366-8] [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: 07/07/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023]
Abstract
INTRODUCTION Studies have shown that interleukin 6 (IL-6) can regulate stem cell osteogenic differentiation; however, the exact mechanism is not clear. Circular RNAs (circRNAs) are closed circular non-coding RNAs that are involved in the process of stem cell osteogenic differentiation. Therefore, the purpose of this present study was to investigate the effect of IL-6 treatment on osteogenic differentiation of human apical tooth papillae stem cells (hSCAPs), and to detect the difference in circRNA expression using gene microarray technology. METHODS After extraction and identification of hSCAPs, alkaline phosphatase (ALP) activity, alizarin red staining, and calcium ion quantitative assay were used to determine the changes of ALP enzyme, mineralized nodules, and matrix calcium levels before and after IL-6 treatment of hSCAPs gene microarray technology was used to analyze the changes in circRNA expression levels before and after IL-6 induction of mineralization. The four selected circRNAs were validated by qRT-PCR. Moreover, gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) were used to predict the potential functions and biological signaling pathways of circRNAs. Finally, these data are integrated and analyzed to construct circRNA-microRNA-mRNA networks. RESULTS Alp and Alizarin red staining confirmed that IL-6 promoted the osteogenic differentiation of hSCAPs. The gene microarray results identified 132 differentially expressed circRNAs, of which 117 were upregulated and 15 were downregulated. Bioinformatic analysis predicted that the circRNA-406620/miR-103a-3p/FAT atypical cadherin 4 (FAT4) pathway might be involved in regulating IL-6 to promote osteogenic differentiation of hSCAPs. CONCLUSION Differentially expressed circRNAs might be closely involved in regulating IL-6 to promote osteogenic differentiation of hSCAPs.
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Affiliation(s)
- Guang Hu
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe East Road, Zhengzhou, 450052, Henan, China
| | - Laidi Wu
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Kaiyang Xue
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe East Road, Zhengzhou, 450052, Henan, China
| | - Hao Han
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe East Road, Zhengzhou, 450052, Henan, China
| | - Yuhui Sun
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe East Road, Zhengzhou, 450052, Henan, China
| | - Kang Gan
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe East Road, Zhengzhou, 450052, Henan, China
| | - Juanfang Zhu
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe East Road, Zhengzhou, 450052, Henan, China
| | - Qi Shi
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Tianfeng Du
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe East Road, Zhengzhou, 450052, Henan, China.
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Smoczer C, Park YK, Herrington JB, Askar MA, Plecha S, Krukonis E, Paurazas SB. A Potential Intracanal Medicament, 2-Hydroxyisocaproic Acid (HICA): Cytotoxicity, Genotoxicity, and Its Effect on SCAP Differentiation. Dent J (Basel) 2023; 11:270. [PMID: 38132408 PMCID: PMC10743052 DOI: 10.3390/dj11120270] [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: 10/16/2023] [Revised: 11/17/2023] [Accepted: 11/23/2023] [Indexed: 12/23/2023] Open
Abstract
Intracanal medicaments with maximal antimicrobial efficacy and minimal damage to resident stem cells are essential for successful regenerative endodontic procedures. 2-Hydroxyisocaproic acid (HICA) could have the attributes of a potential intracanal medicament. This study evaluates its cytotoxicity, genotoxicity, and effects on the odontogenic and osteogenic differentiation of the stem cells of the apical papilla (SCAP). Cytotoxicity and cell viability assays were performed on cells treated for 24, 48, and 72 h with varying concentrations of HICA and compared to the standard intracanal medicament, calcium hydroxide. The genotoxicity was assessed via immunofluorescence for two markers of DNA double-strand breaks: phosphorylated γH2AX and 53BP1. The SCAP differentiation was evaluated based on the alkaline phosphatase activity, Alizarin Red staining, and expression of odontogenic and osteogenic genes (DSPP1, BSP1, OCN, RUNX2) in the presence of selected HICA concentrations. HICA was not cytotoxic at concentrations up to 10 mg/mL, regardless of the exposure time, although it was cytostatic at all tested concentrations. HICA was not genotoxic at concentrations below 5 mg/mL. No difference in cytotoxicity or genotoxicity was found between HICA and calcium hydroxide at 1 mg/mL. HICA retained about 70% of the osteogenic differentiation potential at 1 mg/mL. Within the limitations of this in vitro study, we show that HICA at 1 mg/mL could be a potential intracanal medicament for REPs.
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Affiliation(s)
- Cristine Smoczer
- Division of Integrated Biomedical Sciences, University of Detroit Mercy School of Dentistry, Detroit, MI 48208, USA; (C.S.); (S.P.); (E.K.)
| | - Yun K. Park
- Graduate Endodontics, University of Detroit Mercy School of Dentistry, Detroit, MI 48208, USA (M.A.A.)
| | - James B. Herrington
- Graduate Endodontics, University of Detroit Mercy School of Dentistry, Detroit, MI 48208, USA (M.A.A.)
| | - Mazin A. Askar
- Graduate Endodontics, University of Detroit Mercy School of Dentistry, Detroit, MI 48208, USA (M.A.A.)
| | - Sarah Plecha
- Division of Integrated Biomedical Sciences, University of Detroit Mercy School of Dentistry, Detroit, MI 48208, USA; (C.S.); (S.P.); (E.K.)
| | - Eric Krukonis
- Division of Integrated Biomedical Sciences, University of Detroit Mercy School of Dentistry, Detroit, MI 48208, USA; (C.S.); (S.P.); (E.K.)
| | - Susan B. Paurazas
- Graduate Endodontics, University of Detroit Mercy School of Dentistry, Detroit, MI 48208, USA (M.A.A.)
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Songsaad AT, Thairat S, Seemaung P, Thongsuk A, Balit T, Ruangsawasdi N, Phruksaniyom C, Gonmanee T, White KL, Thonabulsombat C. Characterization of neural stem cells derived from human stem cells from the apical papilla undergoing three-dimensional neurosphere induction. J Appl Oral Sci 2023; 31:e20230209. [PMID: 37970885 PMCID: PMC10697670 DOI: 10.1590/1678-7757-2023-0209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 09/03/2023] [Accepted: 09/29/2023] [Indexed: 11/19/2023] Open
Abstract
OBJECTIVES The endogenous repairing based on the activation of neural stem cells (NSCs) is impaired by neurodegenerative diseases. The present study aims to characterize human stem cells from the apical papilla (hSCAPs) with features of mesenchymal stem cells (MSCs) and to demonstrate the neuronal differentiation of hSCAPs into NSCs through the formation of three-dimensional (3D) neurospheres, verifying the structural, immunophenotyping, self-renewal, gene expression and neuronal activities of these cells to help further improve NSCs transplantation. METHODOLOGY The hSCAPs were isolated from healthy impacted human third molar teeth and characterized as MSCs. They were then induced into 3D-neurospheres using a specific neural induction medium. Subsequently, the intra-neurospheral cells were confirmed to be NSCs by the identification of Nissl substance and the analysis of immunofluorescence staining, self-renewal ability, and gene expression of the cells. Moreover, the neuronal activity was investigated using intracellular calcium oscillation. RESULTS The isolated cells from the human apical papilla expressed many markers of MSCs, such as self-renewal ability and multilineage differentiation. These cells were thus characterized as MSCs, specifically as hSCAPs. The neurospheres induced from hSCAPs exhibited a 3D-floating spheroidal shape and larger neurospheres, and consisted of a heterogeneous population of intra-neurospheral cells. Further investigation showed that these intra-neurospheral cells had Nissl body staining and also expressed both Nestin and SOX2. They presented a self-renewal ability as well, which was observed after their disaggregation. Their gene expression profiling also exhibited a significant amount of NSC markers (NES, SOX1, and PAX6). Lastly, a large and dynamic change of the fluorescent signal that indicated calcium ions (Ca2+) was detected in the intracellular calcium oscillation, which indicated the neuronal activity of NSCs-derived hSCAPs. CONCLUSIONS The hSCAPs exhibited properties of MSCs and could differentiate into NSCs under 3D-neurosphere generation. The present findings suggest that NSCs-derived hSCAPs may be used as an alternative candidates for cell-based therapy, which uses stem cell transplantation to further treat neurodegenerative diseases.
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Affiliation(s)
| | - Sarut Thairat
- Mahidol University, Faculty of Dentistry, Oral Tissues, Cells and Molecular Biology Analysis and Research Center, Bangkok, Thailand
| | - Peeratchai Seemaung
- Mahidol University, Faculty of Science, Department of Anatomy, Bangkok, Thailand
| | - Amarin Thongsuk
- Mahidol University, Faculty of Science, Department of Anatomy, Bangkok, Thailand
| | - Tatcha Balit
- Mahidol University, Faculty of Science, Department of Anatomy, Bangkok, Thailand
| | - Nisarat Ruangsawasdi
- Mahidol University, Faculty of Dentistry, Department of Pharmacology, Bangkok, Thailand
| | | | - Thanasup Gonmanee
- Mahidol University, Faculty of Medicine Ramathibodi Hospital, Chakri Naruebodindra Medical Institute, Samut Prakan, Thailand
| | - Kenneth L White
- Utah State University, College of Agriculture and Applied Sciences, Department of Animal, Dairy, and Veterinary Sciences, Utah, The United States of America
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Lin X, Wang H, Wu T, Zhu Y, Jiang L. Exosomes derived from stem cells from apical papilla promote angiogenesis via miR-126 under hypoxia. Oral Dis 2023; 29:3408-3419. [PMID: 35722675 DOI: 10.1111/odi.14285] [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: 12/14/2021] [Revised: 05/31/2022] [Accepted: 06/14/2022] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To explore the effect of exosomal miR-126 derived from stem cells from the apical papilla (SCAPs) under hypoxia on human umbilical vein endothelial cell (HUVEC) angiogenesis. METHODS miR-126 mimics plasmids were used to upregulate miR-126 in SCAPs. Internalization of PKH26-labeled exosomes was examined by fluorescent microscopy. CCK-8 assay, Transwell assay, scratch assay, tube formation assay, and Matrigel plug assay were performed to detect the effects of exosomes on the angiogenic ability of HUVECs. The luciferase reporter assay and rescue assay were performed to examine the relationship between miR-126 and sprouty-related, EVH1 domain-containing protein 1 (SPRED1). The involvement of SPRED1 and the extracellular signal-regulated kinase (ERK) signaling pathway was evaluated by western blotting. RESULTS miR-126 expression was upregulated in SCAPs and in SCAP-derived exosomes under hypoxia. miR-126 expression was increased in HUVECs when cocultured with SCAP-derived exosomes. Induced overexpression of miR-126 in hypoxic SCAPs and secreted exosomes resulted in enhanced angiogenesis both in vitro and in vivo. Western blot analysis revealed that miR-126-mediated SPRED1 downregulation induced activation of ERK signaling. CONCLUSIONS Under hypoxic conditions, exosomes derived from SCAPs can promote HUVEC angiogenesis through expression of miR-126, which subsequently suppresses SPRED1 and activates the ERK signaling pathway.
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Affiliation(s)
- Xinhai Lin
- Department of General Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Haodong Wang
- Department of General Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Tiantian Wu
- Department of General Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Yaqin Zhu
- Department of General Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Long Jiang
- Department of General Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai, China
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23
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Nasiri K, Jahri M, Kolahdouz S, Soleimani M, Makiya A, Saini RS, Merza MS, Yasamineh S, Banakar M, Yazdanpanah MH. MicroRNAs Function in Dental Stem Cells as a Promising Biomarker and Therapeutic Target for Dental Diseases. Mol Diagn Ther 2023; 27:703-722. [PMID: 37773247 DOI: 10.1007/s40291-023-00675-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/23/2023] [Indexed: 10/01/2023]
Abstract
Undifferentiated, highly proliferative, clonogenic, and self-renewing dental stem cells have paved the way for novel approaches to mending cleft palates, rebuilding lost jawbone and periodontal tissue, and, most significantly, recreating lost teeth. New treatment techniques may be guided by a better understanding of these cells and their potential in terms of the specificity of the regenerative response. MicroRNAs have been recognized as an essential component in stem cell biology due to their role as epigenetic regulators of the processes that determine stem cell destiny. MicroRNAs have been proven to be crucial in a wide variety of molecular and biological processes, including apoptosis, cell proliferation, migration, and necrocytosis. MicroRNAs have been recognized to control protein translation, messenger RNA stability, and transcription and have been reported to play essential roles in dental stem cell biology, including the differentiation of dental stem cells, the immunological response, apoptosis, and the inflammation of the dental pulp. Because microRNAs increase dental stem cell differentiation, they may be used in regenerative medicine to either preserve the stem cell phenotype or to aid in the development of tooth tissue. The development of novel biomarkers and therapies for dental illnesses relies heavily on progress made in our knowledge of the roles played by microRNAs in regulating dental stem cells. In this article, we discuss how dental stem cells and their associated microRNAs may be used to cure dental illness.
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Affiliation(s)
- Kamyar Nasiri
- Department of Dentistry, Islamic Azad University, Tehran, Iran
| | - Mohammad Jahri
- Dental Research Center, School of Dentistry, Shahid Beheshti, Research Institute of Dental Sciences, University of Medical Sciences, Tehran, Iran
| | | | | | - Ali Makiya
- Student Research Committee, Faculty of Dentistry, Mashhad University of Medical Science, Mashhad, Iran
| | - Ravinder S Saini
- COAMS, King Khalid University, Abha, 62529, Kingdom of Saudi Arabia
| | - Muna S Merza
- Prosthetic Dental Techniques Department, Al-Mustaqbal University College, Babylon, 51001, Iraq
| | - Saman Yasamineh
- Young Researchers and Elite Club, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | - Morteza Banakar
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
- Department of Pediatric Dentistry, Faculty of Dentistry, Shahed University, Tehran, Iran.
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Takimoto K, Widbiller M, Diogenes A. Expression of Toll-like Receptors in Stem Cells of the Apical Papilla and Its Implication for Regenerative Endodontics. Cells 2023; 12:2502. [PMID: 37887345 PMCID: PMC10605481 DOI: 10.3390/cells12202502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/16/2023] [Accepted: 10/18/2023] [Indexed: 10/28/2023] Open
Abstract
Regenerative therapies to replace cells and tissues damaged due to trauma and dental infections require temporal and spatial controlled recruitment and the differentiation of progenitor/stem cells. However, increasing evidence shows microbial antigens can interfere with this process. Toll-like receptors (TLRs) are crucial in recognizing pathogen-associated molecular patterns. Stem cells of the apical papilla (SCAP) are required for normal dental development and are intimately involved in the reparative and regenerative capacity of developing teeth. We hypothesized that TLRs are expressed in SCAP and that the activation of TLR2/TLR4 or TLR3 by different ligands results in differential cellular fate, impacting their differentiation into a mineralizing phenotype. We found that most TLRs are expressed as detected by PCR except TLR7 and TLR8; exposure to heat-killed E. coli results in upregulating TLR2 and TLR4 and reducing mineralization capacity. In addition, bacterial exposure resulted in the upregulation of 11 genes, of which 9 were chemokines whose proteins were also upregulated and released, promoting in vitro macrophage migration. On the other hand, TLR3 activation resulted in increased proliferation and a dramatic inhibition of osteogenic and odontoblastic differentiation, which was reversed by inhibition or the knockdown of TLR3 expression. The profound effects of TLR activation resulting in different cell fates that are ligand and receptor-specific warrants further evaluation and represents an important therapeutic target to make regenerative approaches more predictable following dental infections.
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Affiliation(s)
- Koyo Takimoto
- Department of Endodontics, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900, USA; (K.T.); (M.W.)
| | - Matthias Widbiller
- Department of Endodontics, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900, USA; (K.T.); (M.W.)
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, 93053 Regensburg, Germany
| | - Anibal Diogenes
- Department of Endodontics, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900, USA; (K.T.); (M.W.)
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25
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Zhang C, Ye W, Zhao M, Long L, Xia D, Fan Z. MLL1 inhibits the neurogenic potential of SCAPs by interacting with WDR5 and repressing HES1. Int J Oral Sci 2023; 15:48. [PMID: 37852994 PMCID: PMC10584904 DOI: 10.1038/s41368-023-00253-0] [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: 04/19/2023] [Revised: 09/18/2023] [Accepted: 09/25/2023] [Indexed: 10/20/2023] Open
Abstract
Mesenchymal stem cell (MSC)-based therapy has emerged as a promising treatment for spinal cord injury (SCI), but improving the neurogenic potential of MSCs remains a challenge. Mixed lineage leukemia 1 (MLL1), an H3K4me3 methyltransferases, plays a critical role in regulating lineage-specific gene expression and influences neurogenesis. In this study, we investigated the role and mechanism of MLL1 in the neurogenesis of stem cells from apical papilla (SCAPs). We examined the expression of neural markers, and the nerve repair and regeneration ability of SCAPs using dynamic changes in neuron-like cells, immunofluorescence staining, and a SCI model. We employed a coimmunoprecipitation (Co-IP) assay, real-time RT-PCR, microarray analysis, and chromatin immunoprecipitation (ChIP) assay to investigate the molecular mechanism. The results showed that MLL1 knock-down increased the expression of neural markers, including neurogenic differentiation factor (NeuroD), neural cell adhesion molecule (NCAM), tyrosine hydroxylase (TH), βIII-tubulin and Nestin, and promoted neuron-like cell formation in SCAPs. In vivo, a transplantation experiment showed that depletion of MLL 1 in SCAPs can restore motor function in a rat SCI model. MLL1 can combine with WD repeat domain 5 (WDR5) and WDR5 inhibit the expression of neural markers in SCAPs. MLL1 regulates Hairy and enhancer of split 1 (HES1) expression by directly binds to HES1 promoters via regulating H3K4me3 methylation by interacting with WDR5. Additionally, HES1 enhances the expression of neural markers in SCAPs. Our findings demonstrate that MLL1 inhibits the neurogenic potential of SCAPs by interacting with WDR5 and repressing HES1. These results provide a potential therapeutic target for promoting the recovery of motor function in SCI patients.
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Affiliation(s)
- Chen Zhang
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
- Department of Dental Emergency, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Weilong Ye
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Mengyao Zhao
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Lujue Long
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Dengsheng Xia
- Department of Dental Emergency, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Zhipeng Fan
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China.
- Beijing Laboratory of Oral Health, Capital Medical University, Beijing, China.
- Research Unit of Tooth Development and Regeneration, Chinese Academy of Medical Sciences, Beijing, China.
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26
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Xue K, Hu G, Wu L, Han H, Sun Y, Gan K, Zhu J, Du T. The bioceramic sealer iRoot SP promotes osteogenic differentiation of human stem cells from apical papilla via miR-141-3p/SPAG9/MAPK signalling pathway. Int Endod J 2023; 56:1241-1253. [PMID: 37357722 DOI: 10.1111/iej.13948] [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: 11/24/2022] [Revised: 06/19/2023] [Accepted: 06/20/2023] [Indexed: 06/27/2023]
Abstract
AIM The premixed bioceramic sealer iRoot SP that is widely used clinically has been reported to kill bacterial biofilms and promote osteogenic differentiation of human stem cells from the apical papilla (hSCAPs). Although miR-141-3p has been substantiated to be involved in the osteogenic process, the underlying mechanisms remain unclear. The aim of this study was to investigate the role of miR-141-3p in osteogenic differentiation and underlying mechanisms of iRoot SP-treated hSCAPs. METHODOLOGY hSCAPs were extracted from tissue blocks with enzyme digestion and identified by using immunofluorescence, flow cytometry and alizarin red staining. The mRNA expression level of miR-141-3p in hSCPAs after culture with iRoot SP was examined by quantitative real-time PCR (qRT-PCR) assay. SPAG9 was identified as a downstream target gene of miR-141-3p by dual-luciferase report assay. Alkaline phosphatase (ALP) staining and activity detection, alizarin red staining, calcium concentration assay, qRT-PCR and western blot were used to estimate osteogenic differentiation ability and involved protein expression levels of the osteogenic makers and signalling pathway-related factors in iRoot SP-treated hSCAPs. Data were analysed by one-way anova and post hoc Tukey's test to determine any statistical differences between the experimental groups and the control group. p < .05 was considered statistically significant. RESULTS Expression of miR-141-3p was reduced in iRoot SP-treated hSCAPs with the increased exposure time up to 7 days, and the western blot and qRT-PCR results revealed that the osteogenic markers osteocalcin (OCN), osterix (OSX), runt-related transcription factor 2 (RUNX2) and dentin sialophosphoprotein (DSPP) were inversely correlated with miR-141-3p. The negative regulatory relationship between miR-141-3p and SPAG9/ mitogen-activated protein kinases (MAPK) signalling axis was validated in this in vitro experiments. CONCLUSIONS The bioceramic sealer iRoot SP promoted osteogenic differentiation of hSCAPs by inhibiting miR-141-3p following down-regulated SPAG9 expression, and activated MAPK pathway. These findings proposed a novel therapeutic impact of bioceramic sealer iRoot SP inducing bone regeneration in refractory periapical periodontitis.
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Affiliation(s)
- Kaiyang Xue
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Guang Hu
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Laidi Wu
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hao Han
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yuhui Sun
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Kang Gan
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Juanfang Zhu
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Tianfeng Du
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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27
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Vaswani BK, Mundada BP, Bhola N, Paul P, Reche A, Ahuja KP. Stem-Cell Therapy: Filling Gaps in Oro-Maxillofacial Region. Cureus 2023; 15:e47171. [PMID: 38022051 PMCID: PMC10652057 DOI: 10.7759/cureus.47171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 10/14/2023] [Indexed: 12/01/2023] Open
Abstract
How do stem cells function? Why should we, as dentists, care about stem cells? How might dental procedures be substituted by stem cells? Are stem cells capable of regenerating a tooth or temporomandibular joint (TMJ)? Although the ability to regenerate a destroyed tissue has been known for a while, research into regenerative medicine and dentistry has made significant strides in molecular biology. A paradigm shift in the therapeutic toolbox for dental and oral diseases is likely to result from a growing understanding of biological concepts in the regeneration of oral/dental tissues along with stem cell research, leading to an intense search for "biological solutions to biological problems." Among other tissues, orofacial tissues effectively separate stem cells from human tissues. Because they can self-renew and produce different cell types, stem cells offer novel techniques for regenerating damaged tissues and curing illnesses. A number of significant milestone successes have shown their practical applicability, traditional biomaterial-based treatments in regenerative dentistry as therapeutic alternatives that offer regeneration of damaged oral tissues rather than merely "filling the gaps." In order to use these innovative accomplishments for patient well-being, the ultimate goal of this ground-breaking technology, well-designed clinical studies must be implemented as a crucial next step. The review's objective is to briefly synthesize the literature on stem cells in terms of their traits, subtypes, and uses for dental stem cells. It has been highlighted that stem cell therapy has the ability to treat craniofacial abnormalities and regenerate teeth in the oral and maxillofacial regions.
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Affiliation(s)
- Bhumika K Vaswani
- Public Health Dentistry, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Bhushan P Mundada
- Oral and Maxillofacial Surgery, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Nitin Bhola
- Oral and Maxillofacial Surgery, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Priyanka Paul
- Public Health Dentistry, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Amit Reche
- Public Health Dentistry, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Kajal P Ahuja
- Public Health Dentistry, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
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28
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Pan H, Yang Y, Xu H, Jin A, Huang X, Gao X, Sun S, Liu Y, Liu J, Lu T, Wang X, Zhu Y, Jiang L. The odontoblastic differentiation of dental mesenchymal stem cells: molecular regulation mechanism and related genetic syndromes. Front Cell Dev Biol 2023; 11:1174579. [PMID: 37818127 PMCID: PMC10561098 DOI: 10.3389/fcell.2023.1174579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Accepted: 08/24/2023] [Indexed: 10/12/2023] Open
Abstract
Dental mesenchymal stem cells (DMSCs) are multipotent progenitor cells that can differentiate into multiple lineages including odontoblasts, osteoblasts, chondrocytes, neural cells, myocytes, cardiomyocytes, adipocytes, endothelial cells, melanocytes, and hepatocytes. Odontoblastic differentiation of DMSCs is pivotal in dentinogenesis, a delicate and dynamic process regulated at the molecular level by signaling pathways, transcription factors, and posttranscriptional and epigenetic regulation. Mutations or dysregulation of related genes may contribute to genetic diseases with dentin defects caused by impaired odontoblastic differentiation, including tricho-dento-osseous (TDO) syndrome, X-linked hypophosphatemic rickets (XLH), Raine syndrome (RS), hypophosphatasia (HPP), Schimke immuno-osseous dysplasia (SIOD), and Elsahy-Waters syndrome (EWS). Herein, recent progress in the molecular regulation of the odontoblastic differentiation of DMSCs is summarized. In addition, genetic syndromes associated with disorders of odontoblastic differentiation of DMSCs are discussed. An improved understanding of the molecular regulation and related genetic syndromes may help clinicians better understand the etiology and pathogenesis of dentin lesions in systematic diseases and identify novel treatment targets.
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Affiliation(s)
- Houwen Pan
- Center of Craniofacial Orthodontics, Department of Oral and Cranio-Maxillofacial Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Disease, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Yiling Yang
- Center of Craniofacial Orthodontics, Department of Oral and Cranio-Maxillofacial Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Disease, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Hongyuan Xu
- Center of Craniofacial Orthodontics, Department of Oral and Cranio-Maxillofacial Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Disease, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Anting Jin
- Center of Craniofacial Orthodontics, Department of Oral and Cranio-Maxillofacial Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Disease, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Xiangru Huang
- Center of Craniofacial Orthodontics, Department of Oral and Cranio-Maxillofacial Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Disease, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Xin Gao
- Center of Craniofacial Orthodontics, Department of Oral and Cranio-Maxillofacial Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Disease, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Siyuan Sun
- Center of Craniofacial Orthodontics, Department of Oral and Cranio-Maxillofacial Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Disease, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Yuanqi Liu
- Center of Craniofacial Orthodontics, Department of Oral and Cranio-Maxillofacial Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Disease, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Jingyi Liu
- Center of Craniofacial Orthodontics, Department of Oral and Cranio-Maxillofacial Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Disease, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Tingwei Lu
- Center of Craniofacial Orthodontics, Department of Oral and Cranio-Maxillofacial Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Disease, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Xinyu Wang
- Center of Craniofacial Orthodontics, Department of Oral and Cranio-Maxillofacial Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Disease, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Yanfei Zhu
- Center of Craniofacial Orthodontics, Department of Oral and Cranio-Maxillofacial Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Disease, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Lingyong Jiang
- Center of Craniofacial Orthodontics, Department of Oral and Cranio-Maxillofacial Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Disease, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
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Smoczer C, Yuth KR, Askar MA, Young LA, Paurazas SB. Growth Factors Released from Advanced Platelet-Rich Fibrin in the Presence of Calcium-Based Silicate Materials and Their Impact on the Viability and Migration of Stem Cells of Apical Papilla. Dent J (Basel) 2023; 11:220. [PMID: 37754340 PMCID: PMC10530054 DOI: 10.3390/dj11090220] [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: 08/10/2023] [Revised: 09/07/2023] [Accepted: 09/13/2023] [Indexed: 09/28/2023] Open
Abstract
Advanced platelet-rich fibrin (A-PRF) provides the scaffold and growth factors necessary for stem cells to proliferate and differentiate in successful regenerative endodontic procedures. This study investigates the release of transforming growth factor-β1 (TGF-β1), platelet-derived growth factor (PDGF), and vascular endothelial growth factor (VEGF) from A-PRF in cell culture media in the presence and absence of mineral trioxide aggregate (MTA) or Biodentine. Additionally, this research assesses the viability and migration of stem cells of the apical papilla (SCAP) in previously conditioned media. A-PRF obtained from 14 participants were incubated for 7 days in cell culture media alone or via layering with MTA or Biodentine discs and the release of selected growth factors in the media was evaluated using ELISA. The viability of SCAP grown in conditioned media was measured using the CCK8 assay, while SCAP migration was assessed via a transwell assay by counting migrated cells. The release of TGF-β1, PDGF, and VEGF was significantly higher in media with A-PRF alone than in the presence of either calcium-based silicate material (p < 0.05), which showed no difference from the no-A-PRF control (p < 0.05). None of the tested growth factors released in the A-PRF-conditioned media correlated with clot weight. A-PRF-conditioned media, both with and without calcium-based silicate materials, did not impact SCAP viability and migration (p > 0.05). This study shows that SCAP behavior is not impacted by the decrease in growth factor released in the presence of calcium-based silicate materials and that their role in REPs warrants further investigation.
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Affiliation(s)
- Cristine Smoczer
- Division of Integrated Biomedical Sciences, University of Detroit Mercy School of Dentistry, Detroit, MI 48208, USA; (C.S.)
| | - Kenneth R. Yuth
- Graduate Endodontics, University of Detroit Mercy School of Dentistry, Detroit, MI 48208, USA (M.A.A.)
| | - Mazin A. Askar
- Graduate Endodontics, University of Detroit Mercy School of Dentistry, Detroit, MI 48208, USA (M.A.A.)
| | - Laura A. Young
- Division of Integrated Biomedical Sciences, University of Detroit Mercy School of Dentistry, Detroit, MI 48208, USA; (C.S.)
| | - Susan B. Paurazas
- Graduate Endodontics, University of Detroit Mercy School of Dentistry, Detroit, MI 48208, USA (M.A.A.)
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Cabaña-Muñoz ME, Pelaz Fernández MJ, Parmigiani-Cabaña JM, Parmigiani-Izquierdo JM, Merino JJ. Adult Mesenchymal Stem Cells from Oral Cavity and Surrounding Areas: Types and Biomedical Applications. Pharmaceutics 2023; 15:2109. [PMID: 37631323 PMCID: PMC10459416 DOI: 10.3390/pharmaceutics15082109] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 07/28/2023] [Accepted: 08/02/2023] [Indexed: 08/27/2023] Open
Abstract
Adult mesenchymal stem cells are those obtained from the conformation of dental structures (DMSC), such as deciduous and permanent teeth and other surrounding tissues. Background: The self-renewal and differentiation capacities of these adult stem cells allow for great clinical potential. Because DMSC are cells of ectomesenchymal origin, they reveal a high capacity for complete regeneration of dental pulp, periodontal tissue, and other biomedical applications; their differentiation into other types of cells promotes repair in muscle tissue, cardiac, pancreatic, nervous, bone, cartilage, skin, and corneal tissues, among others, with a high predictability of success. Therefore, stem and progenitor cells, with their exosomes of dental origin and surrounding areas in the oral cavity due to their plasticity, are considered a fundamental pillar in medicine and regenerative dentistry. Tissue engineering (MSCs, scaffolds, and bioactive molecules) sustains and induces its multipotent and immunomodulatory effects. It is of vital importance to guarantee the safety and efficacy of the procedures designed for patients, and for this purpose, more clinical trials are needed to increase the efficacy of several pathologies. Conclusion: From a bioethical and transcendental anthropological point of view, the human person as a unique being facilitates better clinical and personalized therapy, given the higher prevalence of dental and chronic systemic diseases.
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Affiliation(s)
- María Eugenia Cabaña-Muñoz
- CIROM—Centro de Rehabilitación Oral Multidisciplinaria, 30001 Murcia, Spain; (M.E.C.-M.); (J.M.P.-C.); (J.M.P.-I.)
| | | | - José María Parmigiani-Cabaña
- CIROM—Centro de Rehabilitación Oral Multidisciplinaria, 30001 Murcia, Spain; (M.E.C.-M.); (J.M.P.-C.); (J.M.P.-I.)
| | | | - José Joaquín Merino
- Departamento de Farmacología, Farmacognosia y Botánica, Facultad de Farmacia, Universidad Complutense de Madrid (U.C.M), 28040 Madrid, Spain
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31
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Santos LM, Cardoso PES, Diniz EA, Rahhal JG, Sipert CR. Different concentrations of fetal bovine serum affect cytokine modulation in Lipopolysaccharide-activated apical papilla cells in vitro. J Appl Oral Sci 2023; 31:e20230020. [PMID: 37493700 PMCID: PMC10382075 DOI: 10.1590/1678-7757-2023-0020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 06/13/2023] [Indexed: 07/27/2023] Open
Abstract
BACKGROUND Fetal bovine serum (FBS) is the most used supplement in culture media; however, it may interfere with in vitro assays via effects on cell proliferation and cytokine production. The ideal FBS concentration for assays using apical papilla cells (APCs) remains unknown. Therefore, this study aimed to evaluate the effects of FBS on APC activation, cell viability/proliferation, and cytokine production. METHODOLOGY Human APCs were cultured, plated, and maintained in media containing increasing concentrations of FBS for 24 h, 48 h, 72 h, 7 days, and 14 days in the presence of Lipopolysaccharide (LPS - 1 µg/mL). At each time point, the cells were subjected to the MTT assay. The cytokines transforming growth factor (TGF)-β1, osteoprotegerin (OPG), and interleukin (IL)-6, along with the chemokine CCL2, were quantified using the enzyme-linked immunosorbent assay at the 24-h time-point. Statistical analysis was performed using two-way analysis of variance (ANOVA) followed by Tukey's post-hoc test (p<0.05). RESULTS In general, APCs exhibited increasing metabolic activity in an FBS concentration-dependent fashion, regardless of the presence of LPS. In contrast, FBS interfered with the production of all the cytokines evaluated in this study, affecting the response induced by the presence of LPS. CONCLUSION FBS increased APC metabolism in a concentration-dependent manner and differentially affected the production of TGF-β1, OPG, IL-6, and CCL2 by APCs in vitro.
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Affiliation(s)
- Letícia Martins Santos
- Universidade de São Paulo, Departamento de Dentística, Faculdade de Odontologia, São Paulo, SP, Brasil
| | - Patricia E Silva Cardoso
- Universidade de São Paulo, Departamento de Dentística, Faculdade de Odontologia, São Paulo, SP, Brasil
| | - Elisa Abreu Diniz
- Universidade de São Paulo, Departamento de Dentística, Faculdade de Odontologia, São Paulo, SP, Brasil
| | - Juliana Garuba Rahhal
- Universidade de São Paulo, Departamento de Dentística, Faculdade de Odontologia, São Paulo, SP, Brasil
| | - Carla Renata Sipert
- Universidade de São Paulo, Departamento de Dentística, Faculdade de Odontologia, São Paulo, SP, Brasil
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Jena D, Sabiha PB, Kumar NS, Ahmed SS, Bhagat P, Singh SP, Mustafa M. Regenerative Therapy for the Permanent Immature Teeth: A Long Term Study. An Original Research. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2023; 15:S127-S131. [PMID: 37654254 PMCID: PMC10466624 DOI: 10.4103/jpbs.jpbs_435_22] [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: 10/02/2022] [Revised: 10/20/2022] [Accepted: 10/31/2022] [Indexed: 09/02/2023] Open
Abstract
Introduction Endodontics faces several clinical difficulties while treating young necrotic permanent teeth. The use of regenerative endodontic procedures (REPs) enables apical closure, improved canal wall thickness, and root growth. The objective of this study was to assess the effects of these regenerative procedures on immature necrotic permanent teeth. Methods This prospective clinical study was conducted at the tertiary care hospital for the study period of 2 years. This study includes 30 necrotic permanent immature teeth that were studied in 30 subjects of both genders. A standard REP protocol was used to treat every tooth. A follow-up visit was scheduled for each patient at timely intervals. Various study parameters as well as the demographics were assessed at each visit. To examine various parameters, a calibrated endodontist also performed a radiographic evaluation. Results Our findings point to excellent rates of survival, clinical success, and apical pathological resolution for 29 teeth. After 2 years, there were significant variations in the root thickness area and the average root length. The apical diameter significantly decreased during the research period, with 30.8% of the instances exhibiting full apical closure. Apical diameter, root length, and thickness changed more frequently in teeth with the level of the immaturity of the root, although the variations were not significant. Conclusions REP treatment for teeth preceded symptom relief. Increased root thickness, root length, and apical closure were seen at 30 months, even if the clinically meaningful change was not attained in all patients.
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Affiliation(s)
- Debkant Jena
- Department of Conservative Dentistry and Endodontics, Institute of Dental Sciences, SOA Deemed to be University, Bhubaneswar, Odisha, India
| | - P. B. Sabiha
- Department of Conservative Dentistry and Endodontics, MNR Dental College, Sangareddy, Telangana, India
| | - Neshaneni Satish Kumar
- Department of Conservative Dentistry and Endodontics, G. Pulla Reddy Dental College and Hospital, Kurnool, Andhra Pradesh, India
| | | | - Priyanka Bhagat
- Department of Conservative Dentistry and Endodontics, Seema Dental College and Hospital Rishikesh, Uttarakhand, India
| | - Shobhit Pratap Singh
- Department of Conservative Dentistry and Endodontics, Chandra Dental College, Barabanki, UP, India
| | - Mohammed Mustafa
- Department of Conservative Dental Sciences, College of Dentistry, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
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Namazi SS, Mahmoud AH, Dal-Fabbro R, Han Y, Xu J, Sasaki H, Fenno JC, Bottino MC. Multifunctional and biodegradable methacrylated gelatin/Aloe vera nanofibers for endodontic disinfection and immunomodulation. BIOMATERIALS ADVANCES 2023; 150:213427. [PMID: 37075551 PMCID: PMC11027083 DOI: 10.1016/j.bioadv.2023.213427] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/21/2023] [Accepted: 04/08/2023] [Indexed: 04/21/2023]
Abstract
Currently employed approaches and materials used for vital pulp therapies (VPTs) and regenerative endodontic procedures (REPs) lack the efficacy to predictably achieve successful outcomes due to their inability to achieve adequate disinfection and/or lack of desired immune modulatory effects. Natural polymers and medicinal herbs are biocompatible, biodegradable, and present several therapeutic benefits and immune-modulatory properties; thus, standing out as a clinically viable approach capable of establishing a conducive environment devoid of bacteria and inflammation to support continued root development, dentinal bridge formation, and dental pulp tissue regeneration. However, the low stability and poor mechanical properties of the natural compounds have limited their application as potential biomaterials for endodontic procedures. In this study, Aloe vera (AV), as a natural antimicrobial and anti-inflammatory agent, was incorporated into photocrosslinkable Gelatin methacrylate (GelMA) nanofibers with the purpose of developing a highly biocompatible biomaterial capable of eradicating endodontic infection and modulating inflammation. Stable GelMA/AV nanofibers with optimal properties were obtained at the ratio of (70:30) by electrospinning. In addition to the pronounced antibacterial effect against Enterococcus faecalis, the GelMA/AV (70:30) nanofibers also exhibited a sustained antibacterial activity over 14 days and significant biofilm reduction with minimal cytotoxicity, as well as anti-inflammatory properties and immunomodulatory effects favoring healing. Our results indicate that the novel GelMA/AV (70:30) nanofibers hold great potential as a biomaterial strategy for endodontic infection eradication and enhanced healing.
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Affiliation(s)
- Sharon S Namazi
- Department of Cariology, Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - Abdel H Mahmoud
- Department of Cariology, Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - Renan Dal-Fabbro
- Department of Cariology, Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - Yuanyuan Han
- Department of Cariology, Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - Jinping Xu
- Department of Cariology, Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - Hajime Sasaki
- Department of Cariology, Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - J Christopher Fenno
- Department of Biologic and Materials Sciences & Prosthodontics, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Marco C Bottino
- Department of Cariology, Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA; Department of Biomedical Engineering, College of Engineering, University of Michigan, Ann Arbor, MI, USA.
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Lu X, Xie H, Ju Y, Fu Y, Liu S, Zhao S. Role of CPNE1 in Odontoblastic Differentiation of Rat Stem Cells from Apical Papilla. Adv Biol (Weinh) 2023; 7:e2300054. [PMID: 37132099 DOI: 10.1002/adbi.202300054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/30/2023] [Indexed: 05/04/2023]
Abstract
CPNE1 is a calcium-dependent, phospholipid-binding protein that is ubiquitously expressed in various tissues and organs. This study investigates the expression and localization of CPNE1 in tooth germ development and the role of CPNE1 in odontoblastic differentiation. In rat tooth germs, CPNE1 is expressed in the odontoblasts and ameloblasts since the late bell stage. The depletion of CPNE1 in the stem cells from apical papilla (SCAPs) clearly inhibits the expression of odontoblastic-related genes and the formation of mineralized nodules during differentiation, while CPNE1 overexpression promotes this process. In addition, CPNE1 overexpression increases AKT phosphorylation during the odontoblastic differentiation of SCAPs. Furthermore, treatment with AKT inhibitor (MK2206) reduces the expression of odontoblastic-related genes in CPNE1 over-expressed SCAPs, and Alizarin Red staining shows reduced mineralization. These results suggest that CPNE1 plays a role in the tooth germ development as well as the odontblastic differentiation of SCAPs in vitro that is related to the AKT signaling pathway.
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Affiliation(s)
- Xi Lu
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, 200001, P. R. China
| | - Han Xie
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, 200001, P. R. China
| | - Yanqin Ju
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, 200001, P. R. China
| | - Yunyu Fu
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, 200001, P. R. China
| | - Shangfeng Liu
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, 200001, P. R. China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Disease, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, P. R. China
| | - Shouliang Zhao
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, 200001, P. R. China
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Yu H, Habibi M, Motamedi K, Semirumi DT, Ghorbani A. Utilizing stem cells in reconstructive treatments for sports injuries: An innovative approach. Tissue Cell 2023; 83:102152. [PMID: 37451009 DOI: 10.1016/j.tice.2023.102152] [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: 01/27/2023] [Revised: 06/17/2023] [Accepted: 06/29/2023] [Indexed: 07/18/2023]
Abstract
Orthopedic tissue engineering is a rapidly evolving field that holds great promise for the reconstruction and natural repair of bone and joint tissues. Bone loss, fractures, and joint degeneration are common problems that can result from a variety of pathological conditions, and their restoration and replacement are essential not only for functional purposes but also for improving the quality of life for patients. However, current methods rely heavily on artificial materials that can potentially lead to further tissue damage, making tissue engineering a highly attractive alternative. This innovative approach involves the utilization of stem cells (SCs), which are seeded onto a scaffold to form a biological complex. Among these SCs, mesenchymal stem cells (MSCs) extracted from bone marrow and adipose tissue have shown immense potential for bone and joint tissue regeneration. The success of orthopedic tissue engineering is contingent on the careful selection of appropriate scaffolds and inducing molecules, which play a critical role in carrying and supporting cells and inducing their differentiation. This review article comprehensively analyzes the three vital aspects of orthopedic tissue engineering - SCs, scaffolds, and inducing molecules - in order to provide a deeper understanding of this emerging field and its potential for the future of orthopedic medicine.
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Affiliation(s)
- Hongying Yu
- Physical Education Department, Jingchu University of Technology, Jingmen 448000, Hubei, China.
| | - M Habibi
- Faculty of Architecture and Urbanism, UTE University, Calle Rumipamba S/N and Bourgeois, Quito, Ecuador; Department of Biomaterials, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai 600 077, India; Institute of Research and Development, Duy Tan University, Da Nang 550000, Viet Nam
| | - K Motamedi
- Student Research Committee, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - D T Semirumi
- Department of Biomaterials, Islamic Azad University, Isfahan, Iran.
| | - A Ghorbani
- Biotechnology Department, Falavarjan Branch, Islamic Azad University, Isfahan, Iran
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36
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Li FC, Kishen A. 3D Organoids for Regenerative Endodontics. Biomolecules 2023; 13:900. [PMID: 37371480 DOI: 10.3390/biom13060900] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 05/19/2023] [Accepted: 05/23/2023] [Indexed: 06/29/2023] Open
Abstract
Apical periodontitis is the inflammation and destruction of periradicular tissues, mediated by microbial factors originating from the infected pulp space. This bacteria-mediated inflammatory disease is known to interfere with root development in immature permanent teeth. Current research on interventions in immature teeth has been dedicated to facilitating the continuation of root development as well as regenerating the dentin-pulp complex, but the fundamental knowledge on the cellular interactions and the role of periapical mediators in apical periodontitis in immature roots that govern the disease process and post-treatment healing is limited. The limitations in 2D monolayer cell culture have a substantial role in the existing limitations of understanding cell-to-cell interactions in the pulpal and periapical tissues. Three-dimensional (3D) tissue constructs with two or more different cell populations are a better physiological representation of in vivo environment. These systems allow the high-throughput testing of multi-cell interactions and can be applied to study the interactions between stem cells and immune cells, including the role of mediators/cytokines in simulated environments. Well-designed 3D models are critical for understanding cellular functions and interactions in disease and healing processes for future therapeutic optimization in regenerative endodontics. This narrative review covers the fundamentals of (1) the disease process of apical periodontitis; (2) the influence and challenges of regeneration in immature roots; (3) the introduction of and crosstalk between mesenchymal stem cells and macrophages; (4) 3D cell culture techniques and their applications for studying cellular interactions in the pulpal and periapical tissues; (5) current investigations on cellular interactions in regenerative endodontics; and, lastly, (6) the dental-pulp organoid developed for regenerative endodontics.
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Affiliation(s)
- Fang-Chi Li
- Dental Research Institute, Faculty of Dentistry, University of Toronto, Toronto, ON M5G 1G6, Canada
| | - Anil Kishen
- Dental Research Institute, Faculty of Dentistry, University of Toronto, Toronto, ON M5G 1G6, Canada
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EzEldeen M, Moroni L, Nejad ZM, Jacobs R, Mota C. Biofabrication of engineered dento-alveolar tissue. BIOMATERIALS ADVANCES 2023; 148:213371. [PMID: 36931083 DOI: 10.1016/j.bioadv.2023.213371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 01/19/2023] [Accepted: 03/04/2023] [Indexed: 06/18/2023]
Abstract
Oral health is essential for a good overall health. Dento-alveolar conditions have a high prevalence, ranging from tooth decay periodontitis to alveolar bone resorption. However, oral tissues exhibit a limited regenerative capacity, and full recovery is challenging. Therefore, regenerative therapies for dento-alveolar tissue (e.g., alveolar bone, periodontal membrane, dentin-pulp complex) have gained much attention, and novel approaches have been proposed in recent decades. This review focuses on the cells, biomaterials and the biofabrication methods used to develop therapies for tooth root bioengineering. Examples of the techniques covered are the multitude of additive manufacturing techniques and bioprinting approaches used to create scaffolds or tissue constructs. Furthermore, biomaterials and stem cells utilized during biofabrication will also be described for different target tissues. As these new therapies gradually become a reality in the lab, the translation to the clinic is still minute, with a further need to overcome multiple challenges and broaden the clinical application of these alternatives.
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Affiliation(s)
- Mostafa EzEldeen
- OMFS IMPATH Research Group, Faculty of Medicine, Department of Imaging and Pathology, KU Leuven and Oral and Maxillofacial Surgery, University Hospitals Leuven, Kapucijnenvoer 33, 3000 Leuven, Belgium; Department of Oral Health Sciences, KU Leuven and Paediatric Dentistry and Special Dental Care, University Hospitals Leuven, Kapucijnenvoer 33, 3000 Leuven, Belgium
| | - Lorenzo Moroni
- Institute for Technology-inspired Regenerative Medicine, Department of Complex Tissue Regeneration, Maastricht University, Maastricht, the Netherlands
| | - Zohre Mousavi Nejad
- OMFS IMPATH Research Group, Faculty of Medicine, Department of Imaging and Pathology, KU Leuven and Oral and Maxillofacial Surgery, University Hospitals Leuven, Kapucijnenvoer 33, 3000 Leuven, Belgium; Biomaterials Research Group, Department of Nanotechnology and Advance Materials, Materials and Energy Research Center, P.O. Box: 31787-316, Karaj, Alborz, Iran
| | - Reinhilde Jacobs
- OMFS IMPATH Research Group, Faculty of Medicine, Department of Imaging and Pathology, KU Leuven and Oral and Maxillofacial Surgery, University Hospitals Leuven, Kapucijnenvoer 33, 3000 Leuven, Belgium; Department of Dental Medicine, Karolinska Institute, Stockholm, Sweden
| | - Carlos Mota
- Institute for Technology-inspired Regenerative Medicine, Department of Complex Tissue Regeneration, Maastricht University, Maastricht, the Netherlands.
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Regenerative Endodontic Management of an Immature Necrotic Premolar Using Advanced Platelet-Rich Fibrin. Case Rep Dent 2023; 2023:1135413. [PMID: 36762288 PMCID: PMC9904919 DOI: 10.1155/2023/1135413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 12/16/2022] [Accepted: 01/19/2023] [Indexed: 02/04/2023] Open
Abstract
Regenerative endodontic management is a feasible treatment for immature teeth with periapical radiolucency and necrotic pulp that simplifies continued root creation. Among the most prevalent health problems in an immature root is dental pulp necrosis, which is caused by caries, improper endodontic treatments, and trauma. Necrosis of the dental pulp can affect long-term tooth survival and preservation and serve as a source of bacteria infecting the periapical tissue and the maxillofacial space. Here, we report on the application of advanced platelet-rich fibrin plus (A-PRF+) therapy, as a regenerative endodontic treatment (RET), in a 12-year-old with necrotic pulp and asymptomatic apical periodontitis. Over a 24-month follow-up post-treatment, we observed resolving of symptoms and a complete root formation with considerable periapical healing.
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Ebadi M, Miresmaeili A, Shojaei S, Farhadi S, Rajabi S. Isolation and characterization of apical papilla cells from root end of human third molar and their differentiation into cementoblast cells: an in vitro study. Biol Proced Online 2023; 25:2. [PMID: 36690939 PMCID: PMC9869574 DOI: 10.1186/s12575-023-00190-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 01/11/2023] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Periodontal regeneration, treatment of periodontal-related diseases and improving the function of implants are global therapeutic challenges. The differentiation of human stem cells from apical papilla into cementoblasts may provide a strategy for periodontitis treatment. This study aimed to evaluate the differentiation of primary human stem cells apical papilla (hSCAPs) to cementoblast cells. MATERIAL AND METHODS SCAPs cells were isolated from human third molar and then incubated for 21 days in a differentiation microenvironment. Alkaline phosphatase (ALP) and Alizarin red S staining assays were performed to evaluate the calcium deposition and formation of hydroxyapatite in the cultured hSCAPs microenvironment. Real-time polymerase chain reaction (RT-PCR) assay was performed for cementum protein 1 (CEMP1), collagen type I (COL1), F-Spondin (SPON1), osteocalcin (OCN), and osteopontin (OPN) as specific markers of cementoblasts and their progenitors. RESULTS ALP phosphatase activity in day 21 of treatment demonstrated a significant increase in ALP compared to the control. Alizarin red S staining assay showed that the differentiated hSCAPs offered a great amount of calcium deposition nodules compared to the control. The increased expression level of CEMP1, OCN, OPN, COL1 and Spon1 was observed in days 7, 14 and 21 compared to the control, while greatest expression level was observed in day 21. CONCLUSION In conclusion, the differentiation microenviroment is convenient and useful for promoting the differentiation of hSCAPs into cementoblast.
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Affiliation(s)
- Morvarid Ebadi
- grid.411463.50000 0001 0706 2472Department of Biomedical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Amirfarhang Miresmaeili
- grid.411950.80000 0004 0611 9280Orthodontic Department of Hamadan University of Medical Sciences and Hamadan Dental Research Centre, Hamadan, Iran
| | - Shahrokh Shojaei
- grid.411463.50000 0001 0706 2472Department of Biomedical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran ,grid.411463.50000 0001 0706 2472Stem Cells Research Center, Tissue Engineering and Regenerative Medicine Institute, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Sareh Farhadi
- grid.411463.50000 0001 0706 2472Department of Oral & Maxillofacial Pathology, Faculty of Dentistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Sarah Rajabi
- grid.419336.a0000 0004 0612 4397Department of Cell Engineering, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
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Zafari J, Jouni FJ, Nikzad F, Esmailnasab S, Javan ZA, Karkehabadi H. Combination of Dental-Capping Agents with Low Level Laser Therapy Promotes Proliferation of Stem Cells from Apical Papilla. Photobiomodul Photomed Laser Surg 2023; 41:3-9. [PMID: 36577035 DOI: 10.1089/photob.2022.0072] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Background: Direct pulp capping is a vital pulp therapy, which stimulates differentiation of stem cells from apical papilla (SCAPs). SCAPs have multipotential capacity to differentiate into types of cells, contributing to the regeneration of tissues. Objective: Considering the promising effects of dental-capping materials, we aim to investigate the effect of dental dressing materials combined with laser therapy on the percentage of SCAP viability and the consequent dental regeneration capacity. Methods: We collected two immature third molar teeth and isolated SCAPs through collagenase type I enzymatic activity. Isolated SCAPs were then cultured with Dulbecco's modified Eagle's medium and α-minimum essential medium enriched with 15% and 10% fetal bovine serum, respectively. After reaching 70-80% confluency, cells were seeded in a 96-well plate and then treated with mineral trioxide aggregate (MTA), enamel matrix derivative (EMD), biodentine, and low level laser therapy (LLLT) alone and in combination for 24, 48, and 168 h. After that, cell survival rate was assessed using (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) (MTT) assay. Results: We found that combination of MTA, EMD, and LLLT as well as that of biodentine, EMD, and LLLT could lead to significant increase of SCAP viability as compared with other treatment groups. Combination of MTA and biodentine with EMD could also show increased level of SCAP proliferation and viability. However, MTA and biodentine alone reduced SCAP survival rate in all time points. Conclusions: Our conclusion is that LLLT can serve as an enhancer of SCAP proliferation and differentiation rate when added to dental-capping agents such as MTA, EMD, and biodentine. Thus, LLLT combination with effective capping materials will serve as a promising option for dental tissue repair.
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Affiliation(s)
- Jaber Zafari
- Laser Application in Medical Sciences Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Fatemeh Javani Jouni
- Department of Biochemistry and Biophysics, Faculty of Advanced Sciences and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Forough Nikzad
- Department of Endodontics, Dental School, Hamadan University of Medical Science, Hamadan, Iran
| | - Sogand Esmailnasab
- Department of Endodontics, Dental School, Hamadan University of Medical Science, Hamadan, Iran
| | - Zahra Abbasi Javan
- Department of Endodontics, Dental School, Hamadan University of Medical Science, Hamadan, Iran
| | - Hamed Karkehabadi
- Department of Endodontics, Dental School, Hamadan University of Medical Science, Hamadan, Iran
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Hu J, Huang X, Zheng L, Zhang Y, Zeng H, Nie L, Pang X, Zhang H. MiR-199a-5P promotes osteogenic differentiation of human stem cells from apical papilla via targeting IFIT2 in apical periodontitis. Front Immunol 2023; 14:1149339. [PMID: 37063854 PMCID: PMC10098181 DOI: 10.3389/fimmu.2023.1149339] [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: 02/01/2023] [Accepted: 03/20/2023] [Indexed: 04/18/2023] Open
Abstract
Introduction Periapical alveolar bone loss is the common consequence of apical periodontitis (AP) caused by persistent local inflammation around the apical area. Human stem cells from apical papilla (hSCAPs) play a crucial role in the restoration of bone lesions during AP. Studies have recently identified the critical role of microRNAs (miRNAs) involved in AP pathogenesis, but little is known about their function and potential molecular mechanism, especially in the osteogenesis of hSCAPs during AP. Here, we investigated the role of clinical sample-based specific miRNAs in the osteogenesis of hSCAPs. Methods Differential expression of miRNAs were detected in the periapical tissues of normal and patients with AP via transcriptomic analysis, and the expression of miR-199a-5p was confirmed by qRT-PCR. Treatment of hSCAPs with miR-199a-5p mimics while loaded onto beta-tricalcium phosphate (β-TCP) ceramic particle scaffold to explore its effect on osteogenesis in vivo. RNA binding protein immunoprecipitation (RIP) and Luciferase reporter assay were conducted to identify the target gene of miR-199a-5p. Results The expression of miR-199a-5p was decreased in the periapical tissues of AP patients, and miR-199a-5p mimics markedly enhanced cell proliferation and osteogenic differentiation of hSCAPs, while miR-199a-5p antagomir dramatically attenuated hSCAPs osteogenesis. Moreover, we identified and confirmed Interferon Induced Protein with Tetratricopeptide Repeats 2 (IFIT2) as a specific target of miR-199a-5p, and silencing endogenous IFIT2 expression alleviated the inhibitory effect of miR-199a-5p antagomir on the osteogenic differentiation of hSCAPs. Furthermore, miR-199a-5p mimics transfected hSCAPs loaded onto beta-tricalcium phosphate (β-TCP) scaffolds induced robust subcutaneous ectopic bone formation in vivo. Discussion These results strengthen our understanding of predictors and facilitators of the key AP miRNAs (miR-199a-5p) in bone lesion repair under periapical inflammatory conditions. And the regulatory networks will be instrumental in exploring the underlying mechanisms of AP and lay the foundation for future regenerative medicine based on dental mesenchymal stem cells.
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Affiliation(s)
- Jing Hu
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, the Affiliated Hospital of Stomatology of Chongqing Medical University, Chongqing, China
- Department of Pediatric Dentistry, the Affiliated Stomatology Hospital, Chongqing Medical University, Chongqing, China
| | - Xia Huang
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, the Affiliated Hospital of Stomatology of Chongqing Medical University, Chongqing, China
| | - Liwen Zheng
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, the Affiliated Hospital of Stomatology of Chongqing Medical University, Chongqing, China
- Department of Pediatric Dentistry, the Affiliated Stomatology Hospital, Chongqing Medical University, Chongqing, China
| | - Yuxin Zhang
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, the Affiliated Hospital of Stomatology of Chongqing Medical University, Chongqing, China
- Department of Pediatric Dentistry, the Affiliated Stomatology Hospital, Chongqing Medical University, Chongqing, China
| | - Huan Zeng
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, the Affiliated Hospital of Stomatology of Chongqing Medical University, Chongqing, China
- Department of Pediatric Dentistry, the Affiliated Stomatology Hospital, Chongqing Medical University, Chongqing, China
| | - Li Nie
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, the Affiliated Hospital of Stomatology of Chongqing Medical University, Chongqing, China
| | - Xiaoxiao Pang
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, the Affiliated Hospital of Stomatology of Chongqing Medical University, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, College of Stomatology, Chongqing Medical University, Chongqing, China
- *Correspondence: Hongmei Zhang, ; Xiaoxiao Pang,
| | - Hongmei Zhang
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, the Affiliated Hospital of Stomatology of Chongqing Medical University, Chongqing, China
- Department of Pediatric Dentistry, the Affiliated Stomatology Hospital, Chongqing Medical University, Chongqing, China
- *Correspondence: Hongmei Zhang, ; Xiaoxiao Pang,
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Khoshbin E, Ghasemi L, Najafi R, Karkehabadi H. Effects of CEM cement and emdogain on proliferation and differentiation of human stem cells from the apical papilla: a comparative in vitro study. Biotechnol Lett 2023; 45:69-81. [PMID: 36550335 DOI: 10.1007/s10529-022-03329-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 11/07/2022] [Accepted: 11/14/2022] [Indexed: 12/24/2022]
Abstract
OBJECTIVES This study compared the effects of calcium-enriched mixture (CEM) cement, Emdogain (EMD), and their combination (CEM/Emdogain) on the differentiation and proliferation of stem cells from the apical papilla (SCAPs). METHODS In this in vitro, experimental study, SCAPs were isolated from two sound immature impacted third molars and cultured. After ensuring their stemness by detecting cell surface markers they were exposed to CEM cement, Emdogain, and CEM cement coated with Emdogain for 24 and 72 h. The control cells did not undergo any intervention. Cell viability [by methyl thiazolyl tetrazolium (MTT) assay], expression of odontogenic differentiation genes [by quantitative reverse-transcription polymerase chain reaction (qRT-PCR)], and alkaline phosphatase (ALP) activity (by ALP staining kit) were evaluated. Data were analyzed by one-way ANOVA, t-test, and Mann-Whitney test (α = 0.05). RESULTS Cell viability in the CEM cement and CEM/Emdogain groups decreased compared with the control group at 72 h (P < 0.05). Expression of dentin sialophosphoprotein (DSPP), dentin matrix protein 1 (DMP1), bone sialoprotein (BSP) genes, and ALP activity significantly increased in all three experimental groups compared with the control group at both 24 and 72 h. This increase was substantially more significant in CEM/Emdogain group (P > 0.05). The number of mineralized nodules significantly increased in all groups at 72 h, with a higher rate in the CEM/Emdogain group. CONCLUSION All biomaterials increased the differentiation of SCAPs, expression of odontogenic differentiation genes, and ALP activity, but CEM/Emdogain was considerably more effective for this purpose.
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Affiliation(s)
- Elham Khoshbin
- Department of Endodontics, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Leila Ghasemi
- Department of Endodontics, School of Dentistry, Arak University of Medical Sciences, Arak, Iran
| | - Rezvan Najafi
- Department of Molecular Medicine and Genetics, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Hamed Karkehabadi
- Department of Endodontics, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran.
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Xiao W, Chi Z, Shi W, Wang J. Modified pulpotomy procedure in immature permanent teeth with apical periodontitis: a randomised controlled trial. BMJ Open 2022; 12:e057714. [PMID: 36581420 PMCID: PMC9806089 DOI: 10.1136/bmjopen-2021-057714] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVES The objective of this study was to evaluate the effectiveness of a modified pulpotomy (MP) procedure in immature permanent teeth with apical periodontitis (AP). DESIGN Randomised controlled trial. SETTING One public hospital in Shanghai, China PARTICIPANTS: A total of 33 teeth (31 patients) with a definitive diagnosis of AP with radiographic periapical radiolucency were recruited in this study. All the patients (teeth) completed the study accordingly. METHODS AND INTERVENTION Patients were randomly assigned to either MP or apexification treatment groups and were followed up for 12 months. Clinical symptoms and complications were recorded, and parallel periapical radiographic images were used to measure changes in root length and apical diameter. Wilcoxon's rank sum test and Fisher's exact test were used to compare the clinical and radiographic outcomes between MP and apexification, and analysed with analysis of variance. MAIN OUTCOME MEASURE The primary outcome was increase in root length at 12 months. The secondary outcomes included tooth survival, clinical success and decrease in apical diameter. RESULTS MP group showed a significant increase in root length (10.05%±2.14% vs 1.16%±0.79%, p<0.05) at 12 months and a decrease in apical diameter (48.88%±10.42% vs 15.90%±8.88%, p<0.05) as compared with the apexification group. The tooth survival rate was 100%, and 90.91% (30/33) of teeth were asymptomatic with apical healing in both treatment groups (p>0.05). CONCLUSIONS MP can be an option for treating immature permanent teeth with AP. MP showed better performance in terms of continued root maturation than apexification. MP and apexification achieved comparable outcomes with regard to the resolution of clinical symptoms and apical healing. TRIAL REGISTRATION NUMBER ChiCTR-INR-17012169.
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Affiliation(s)
- Wen Xiao
- Department of Pediatric Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, People's Republic of China
- National Center for Stomatology, Shanghai, People's Republic of China
- National Clinical Research Center for Oral Diseases, Shanghai, People's Republic of China
- Shanghai Key Laboratory of Stomatology, Shanghai, People's Republic of China
- Shanghai Research Institute of Stomotology, Shanghai, People's Republic of China
| | - Zhengbing Chi
- Department of Pediatric Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, People's Republic of China
- National Center for Stomatology, Shanghai, People's Republic of China
- National Clinical Research Center for Oral Diseases, Shanghai, People's Republic of China
- Shanghai Key Laboratory of Stomatology, Shanghai, People's Republic of China
- Shanghai Research Institute of Stomotology, Shanghai, People's Republic of China
| | - Wentao Shi
- National Center for Stomatology, Shanghai, People's Republic of China
- National Clinical Research Center for Oral Diseases, Shanghai, People's Republic of China
- Shanghai Research Institute of Stomotology, Shanghai, People's Republic of China
- Biostatistics Office, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Jun Wang
- Department of Pediatric Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, People's Republic of China
- National Center for Stomatology, Shanghai, People's Republic of China
- National Clinical Research Center for Oral Diseases, Shanghai, People's Republic of China
- Shanghai Key Laboratory of Stomatology, Shanghai, People's Republic of China
- Shanghai Research Institute of Stomotology, Shanghai, People's Republic of China
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Effect of Long-Term Cryopreservation on the Stemness of Stem Cells of Apical Papilla. Int J Dent 2022; 2022:6004350. [PMID: 36606134 PMCID: PMC9810390 DOI: 10.1155/2022/6004350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 11/29/2022] [Accepted: 12/06/2022] [Indexed: 12/29/2022] Open
Abstract
Stem cells of apical papilla (SCAPs) are considered a subpopulation of dental stem cells with unique properties. They originate from a developing tissue, the apical papilla of developing teeth, a characteristic that enhances their stemness. Banking of these stem cells can offer a source of dental stem cells for future regenerative therapies. Until now, only the effect of six months' cryopreservation on SCAPs has been studied. In this study, the long-term (19 months) effect of cryopreservation on SCAPs was examined by means of estimation of their differentiation's capacity, flow cytometry immunophenotypical characterization, and molecular characterization of the main transcriptional factors that coincide with pluripotency. As was indicated from our results, 19-month cryopreservation of SCAPs did not affect negatively their stemness; since no significant difference was observed on their typical fibroblast-like morphology, they retained their differentiation capacity, and no discrepancies were found either on immunophenotypical level or molecular level.
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Mavinga M, Palmier M, Rémy M, Jeannière C, Lenoir S, Rey S, Saint-Marc M, Alonso F, Génot E, Thébaud N, Chevret E, Mournetas V, Rousseau B, Boiziau C, Boeuf H. The Journey of SCAPs (Stem Cells from Apical Papilla), from Their Native Tissue to Grafting: Impact of Oxygen Concentration. Cells 2022; 11:cells11244098. [PMID: 36552862 PMCID: PMC9776846 DOI: 10.3390/cells11244098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/30/2022] [Accepted: 12/09/2022] [Indexed: 12/24/2022] Open
Abstract
Tissue engineering strategies aim at characterizing and at optimizing the cellular component that is combined with biomaterials, for improved tissue regeneration. Here, we present the immunoMap of apical papilla, the native tissue from which SCAPs are derived. We characterized stem cell niches that correspond to a minority population of cells expressing Mesenchymal stromal/Stem Cell (CD90, CD105, CD146) and stemness (SSEA4 and CD49f) markers as well as endothelial cell markers (VWF, CD31). Based on the colocalization of TKS5 and cortactin markers, we detected migration-associated organelles, podosomes-like structures, in specific regions and, for the first time, in association with stem cell niches in normal tissue. From six healthy teenager volunteers, each with two teeth, we derived twelve cell banks, isolated and amplified under 21 or 3% O2. We confirmed a proliferative advantage of all banks when cultured under 3% versus 21% O2. Interestingly, telomerase activity was similar to that of the highly proliferative hiPSC cell line, but unrelated to O2 concentration. Finally, SCAPs embedded in a thixotropic hydrogel and implanted subcutaneously in immunodeficient mice were protected from cell death with a slightly greater advantage for cells preconditioned at 3% O2.
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Affiliation(s)
- Marine Mavinga
- Univ. Bordeaux, INSERM, BIOTIS, U1026, F-33000 Bordeaux, France
| | | | - Murielle Rémy
- Univ. Bordeaux, INSERM, BIOTIS, U1026, F-33000 Bordeaux, France
| | | | - Solène Lenoir
- Univ. Bordeaux, INSERM, BIOTIS, U1026, F-33000 Bordeaux, France
| | - Sylvie Rey
- Univ. Bordeaux, INSERM, BIOTIS, U1026, F-33000 Bordeaux, France
| | | | - Florian Alonso
- Univ. Bordeaux, INSERM, BIOTIS, U1026, F-33000 Bordeaux, France
| | - Elisabeth Génot
- Univ. Bordeaux, INSERM, BIOTIS, U1026, F-33000 Bordeaux, France
| | - Noélie Thébaud
- Univ. Bordeaux, INSERM, BIOTIS, U1026, F-33000 Bordeaux, France
| | - Edith Chevret
- Univ. Bordeaux, INSERM, BRIC, U1312, F-33000 Bordeaux, France
| | | | - Benoit Rousseau
- Univ. Bordeaux, Animal Facility A2, Service Commun des Animaleries, F-33000 Bordeaux, France
| | | | - Helene Boeuf
- Univ. Bordeaux, INSERM, BIOTIS, U1026, F-33000 Bordeaux, France
- Correspondence:
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Huang F, Cheng L, Li J, Ren B. Nanofibrous scaffolds for regenerative endodontics treatment. Front Bioeng Biotechnol 2022; 10:1078453. [PMID: 36578510 PMCID: PMC9790898 DOI: 10.3389/fbioe.2022.1078453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 11/30/2022] [Indexed: 12/14/2022] Open
Abstract
Untreated dental caries, tooth trauma and dental anatomical variations such as dens invaginatus can result in pulpitis. However, standard root canal therapy cannot treat immature permanent teeth due to an open apical foramen and thin dentinal walls. Thus, regenerative endodontics treatment (RET) following a disinfection step with pulp regeneration has been developed. Pulp connective-tissue, dentin formation, revascularization and reinnervation can occur in this procedure which should be supplemented with intelligent biomaterials to improve repeatability and support well-coordinated regeneration. Furthermore, nanofibrous scaffolds, as one of the most commonly used materials, show promise. The purpose of this article is to highlight the advantages of nanofibrous scaffolds and discuss the future modification and application of them.
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Affiliation(s)
- Fangting Huang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu, Sichuan, China,Department of Preventive Dentistry, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Lei Cheng
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu, Sichuan, China,Department of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Jiyao Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu, Sichuan, China,Department of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu, Sichuan, China,*Correspondence: Jiyao Li, ; Biao Ren,
| | - Biao Ren
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu, Sichuan, China,*Correspondence: Jiyao Li, ; Biao Ren,
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Tang Q, Jin H, Lin S, Ma L, Tian T, Qin X. Are platelet concentrate scaffolds superior to traditional blood clot scaffolds in regeneration therapy of necrotic immature permanent teeth? A systematic review and meta-analysis. BMC Oral Health 2022; 22:589. [PMID: 36494711 PMCID: PMC9733063 DOI: 10.1186/s12903-022-02605-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 11/17/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND The effectiveness of platelet concentrates in promoting root development of necrotic immature permanent teeth is unclear. The present study evaluated whether the platelet concentrate protocol was superior to the traditional blood clot protocol in regeneration therapy. METHODS We searched Electronic databases, such as PubMed, Cochrane Library, ClinicalTrials and EMBASE. Randomized controlled trial studies, cohort studies, case-control studies and cross-sectional studies were included, in which platelet-rich concentrates were tested for periapical healing and root development, with the blood clot treatment protocol as the control group. Clinical and radiographic outcomes were considered. Selected articles were assessed for risk of bias. Pooled risk ratios (risk ratio, RR) were calculated for clinical success, responses to cold and electric pulp tests, periapical lesions, apex closure, root lengthening, and thickening of the dentin walls. Subgroup meta-analysis were conducted according to the type of platelet concentrate used. RESULTS Of the 1272 screened studies, 13 randomized controlled studies, 2 case-control studies and 1 cohort study were selected, in which 465 immature necrotic permanent teeth, particularly incisors and premolars, were treated. Of these 465 teeth, 457 (98.2%) in both the control and experimental groups remained clinically asymptomatic for the entire study duration, whereas eight (1.8%) showed signs and symptoms of failure, including spontaneous pain, sensitivity to percussion or reinfection. Compared with control teeth, teeth treated with PRP achieved better apical healing than BC group (RR 1.13, 95% CI 1.01-1.26, P = 0.03), and teeth treated with platelet concentrates showed improved apical closure (RR 1.04, 95% CI 0.86-1.25, P = 0.69), root lengthening (RR 1.01, 95% CI 0.74-1.39, P = 0.93), and thickening of the dentin walls (RR 1.35, 95% CI 0.95-1.93, P = 0.09), although these differences were not statistically significant. CONCLUSIONS Platelet concentrates can be used as successful scaffolds for regenerative endodontic treatment of necrotic immature permanent teeth, and PRP as a scaffold may achieve better periapical healing of teeth with periapical inflammation, although they did not differ significantly from conventional blood clot scaffolds in development of the root.
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Affiliation(s)
- Qianwei Tang
- grid.256607.00000 0004 1798 2653College of Stomatology, Hospital of Stomatology, Guangxi Medical University, Nanning, Guagnxi China
| | - Hua Jin
- grid.19373.3f0000 0001 0193 3564Department of Stomatology, Harbin Institute of Technology Hospital, Harbin, HeiLongjiang China
| | - Song Lin
- Department of Pediatric Dentistry, Jinan Stomatology Hospital, Jinan, 250001 Shandong Province China
| | - Long Ma
- Department of Pediatric Dentistry, Jinan Stomatology Hospital, Jinan, 250001 Shandong Province China
| | - Tingyu Tian
- Department of Pediatric Dentistry, Jinan Stomatology Hospital, Jinan, 250001 Shandong Province China
| | - Xiurong Qin
- Department of Pediatric Dentistry, Jinan Stomatology Hospital, Jinan, 250001 Shandong Province China
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Neural Regeneration in Regenerative Endodontic Treatment: An Overview and Current Trends. Int J Mol Sci 2022; 23:ijms232415492. [PMID: 36555133 PMCID: PMC9779866 DOI: 10.3390/ijms232415492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/24/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
Abstract
Pulpal and periapical diseases are the most common dental diseases. The traditional treatment is root canal therapy, which achieves satisfactory therapeutic outcomes-especially for mature permanent teeth. Apexification, pulpotomy, and pulp revascularization are common techniques used for immature permanent teeth to accelerate the development of the root. However, there are obstacles to achieving functional pulp regeneration. Recently, two methods have been proposed based on tissue engineering: stem cell transplantation, and cell homing. One of the goals of functional pulp regeneration is to achieve innervation. Nerves play a vital role in dentin formation, nutrition, sensation, and defense in the pulp. Successful neural regeneration faces tough challenges in both animal studies and clinical trials. Investigation of the regeneration and repair of the nerves in the pulp has become a serious undertaking. In this review, we summarize the current understanding of the key stem cells, signaling molecules, and biomaterials that could promote neural regeneration as part of pulp regeneration. We also discuss the challenges in preclinical or clinical neural regeneration applications to guide deep research in the future.
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Kumar N, Maher N, Amin F, Ghabbani H, Zafar MS, Rodríguez-Lozano FJ, Oñate-Sánchez RE. Biomimetic Approaches in Clinical Endodontics. Biomimetics (Basel) 2022; 7:biomimetics7040229. [PMID: 36546929 PMCID: PMC9775094 DOI: 10.3390/biomimetics7040229] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/19/2022] [Accepted: 12/02/2022] [Indexed: 12/13/2022] Open
Abstract
In the last few decades, biomimetic concepts have been widely adopted in various biomedical fields, including clinical dentistry. Endodontics is an important sub-branch of dentistry which deals with the different conditions of pulp to prevent tooth loss. Traditionally, common procedures, namely pulp capping, root canal treatment, apexification, and apexigonesis, have been considered for the treatment of different pulp conditions using selected materials. However, clinically to regenerate dental pulp, tissue engineering has been advocated as a feasible approach. Currently, new trends are emerging in terms of regenerative endodontics which have led to the replacement of diseased and non-vital teeth into the functional and healthy dentine-pulp complex. Root- canal therapy is the standard management option when dental pulp is damaged irreversibly. This treatment modality involves soft-tissue removal and then filling that gap through the obturation technique with a synthetic material. The formation of tubular dentine and pulp-like tissue formation occurs when stem cells are transplanted into the root canal with an appropriate scaffold material. To sum up tissue engineering approach includes three components: (1) scaffold, (2) differentiation, growth, and factors, and (3) the recruitment of stem cells within the pulp or from the periapical region. The aim of this paper is to thoroughly review and discuss various pulp-regenerative approaches and materials used in regenerative endodontics which may highlight the current trends and future research prospects in this particular area.
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Affiliation(s)
- Naresh Kumar
- Department of Science of Dental Materials, Dr. Ishrat Ul Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi 74200, Pakistan
- Correspondence: ; Tel.: +92-333-2818500
| | - Nazrah Maher
- Department of Science of Dental Materials, Dr. Ishrat Ul Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi 74200, Pakistan
| | - Faiza Amin
- Department of Science of Dental Materials, Dow Dental College, Dow University of Health Sciences, Karachi 74200, Pakistan
| | - Hani Ghabbani
- Department of Restorative Dentistry, College of Dentistry, Taibah University, Al Madinah, Al Munawwarah 41311, Saudi Arabia
| | - Muhammad Sohail Zafar
- Department of Restorative Dentistry, College of Dentistry, Taibah University, Al Madinah, Al Munawwarah 41311, Saudi Arabia
- Department of Dental Materials, Islamic International Dental College, Riphah International University, Islamabad 44000, Pakistan
| | | | - Ricardo E. Oñate-Sánchez
- Department of Special Care in Dentistry, Hospital Morales Meseguer, IMIB-Arrixaca, University of Murcia, 30008 Murcia, Spain
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Expert consensus on regenerative endodontic procedures. Int J Oral Sci 2022; 14:55. [PMID: 36450715 PMCID: PMC9712432 DOI: 10.1038/s41368-022-00206-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 10/02/2022] [Accepted: 10/09/2022] [Indexed: 12/05/2022] Open
Abstract
Regenerative endodontic procedures (REPs) is a biologic-based treatment modality for immature permanent teeth diagnosed with pulp necrosis. The ultimate objective of REPs is to regenerate the pulp-dentin complex, extend the tooth longevity and restore the normal function. Scientific evidence has demonstrated the efficacy of REPs in promotion of root development through case reports, case series, cohort studies, and randomized controlled studies. However, variations in clinical protocols for REPs exist due to the empirical nature of the original protocols and rapid advancements in the research field of regenerative endodontics. The heterogeneity in protocols may cause confusion among dental practitioners, thus guidelines and considerations of REPs should be explicated. This expert consensus mainly discusses the biological foundation, the available clinical protocols and current status of REPs in treating immature teeth with pulp necrosis, as well as the main complications of this treatment, aiming at refining the clinical management of REPs in accordance with the progress of basic researches and clinical studies, suggesting REPs may become a more consistently evidence-based option in dental treatment.
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