1
|
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 2024:10.1007/s13770-024-00648-y. [PMID: 38904732 DOI: 10.1007/s13770-024-00648-y] [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: 02/04/2024] [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.
Collapse
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.
| |
Collapse
|
2
|
Zheng C, Jiang P, Hu S, Tang Y, Dou L. Characterization of cells in blood evoked from periapical tissues in immature teeth with pulp necrosis and their potential for autologous cell therapy in Regenerative Endodontics. Arch Oral Biol 2024; 162:105957. [PMID: 38471313 DOI: 10.1016/j.archoralbio.2024.105957] [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: 12/21/2023] [Revised: 02/24/2024] [Accepted: 03/08/2024] [Indexed: 03/14/2024]
Abstract
OBJECTIVE The objectives of this study were to isolate, characterize progenitor cells from blood in the root canals of necrotic immature permanent teeth evoked from periapical tissues and evaluate the applicable potential of these isolated cells in Regenerative Endodontics. DESIGN Ten necrotic immature permanent teeth from seven patients were included. Evoked bleeding from periapical tissues was induced after chemical instrumentation of the root canals. Cells were isolated from the canal blood and evaluated for cell surface marker expression, multilineage differentiation potential, proliferation ability, and target protein expression. Cell sheets formed from these cells were transferred into human root segments, and then transplanted into nude mice. Histological examination was performed after eight weeks. Data analysis was conducted using one-way ANOVA followed by Tukey's post-hoc comparison, considering p < 0.05 as statistically significant. RESULTS The isolated cells exhibited characteristics typical of fibroblastic cells with colony-forming efficiency, and displayed Ki67 positivity and robust proliferation. Flow cytometry data demonstrated that at passage 3, these cells were positive for CD73, CD90, CD105, CD146, and negative for CD34 and CD45. Vimentin expression indicated a mesenchymal origin. Under differentiation media specific differentiation media, the cells demonstrated osteogenic, adipogenic, and chondrogenic differentiation potential. Subcutaneous root canals with cell sheets of isolated cells in nude mice showed the formation of pulp-like tissues. CONCLUSIONS This study confirmed the presence of progenitor cells in root canals following evoked bleeding from periapical tissues of necrotic immature teeth. Isolated cells exhibited similar immunophenotype and regenerative potential with dental mesenchymal stromal cells in regenerative endodontic therapy.
Collapse
Affiliation(s)
- Chengxiang Zheng
- The Affiliated Stomatological Hospital of Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Peiru Jiang
- The Affiliated Stomatological Hospital of Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Shan Hu
- The Affiliated Stomatological Hospital of Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Yin Tang
- School of Dental Medicine Western University of Health Sciences, Pomona, CA, USA
| | - Lei Dou
- The Affiliated Stomatological Hospital of Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China.
| |
Collapse
|
3
|
Abubaker M, Greaney A, Newport D, Mulvihill JJE. Characterization of primary human leptomeningeal cells in 2D culture. Heliyon 2024; 10:e26744. [PMID: 38434413 PMCID: PMC10906397 DOI: 10.1016/j.heliyon.2024.e26744] [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: 05/09/2023] [Revised: 01/31/2024] [Accepted: 02/19/2024] [Indexed: 03/05/2024] Open
Abstract
Maintaining the integrity of brain barriers is critical for a healthy central nervous system. While extensive research has focused on the blood-brain barrier (BBB) of the brain vasculature and blood-cerebrospinal fluid barrier (BCSFB) of the choroid plexus, the barriers formed by the meninges have not received as much attention. These membranes create a barrier between the brain and cerebrospinal fluid (CSF), as well as between CSF and blood. Recent studies have revealed that this barrier has been implicated in the development of neurological and immunological disorders. In order to gain a deeper comprehension of the functioning and significance of the meningeal barriers, sophisticated models of these barriers, need to be created. The aim of this paper is to investigate the characteristics of commercially available primary leptomeningeal cells (LMCs) that form the meningeal barriers, in a cultured environment, including their morphology, proteomics, and barrier properties, and to determine whether passaging of these cells affects their behaviour in comparison to their in vivo state. The results indicate that higher passage numbers significantly alter the morphology and protein localisation and expression of the LMCs. Furthermore, the primary cell culture co-stained for S100A6 and E-cadherin suggesting it is a co-culture of both pial and arachnoid cells. Additionally, cultured LMCs showed an increase in vimentin and cytokeratin expression and a lack of junctional proteins localisation on the cell membrane, which could suggest loss of epithelial properties due to culture, preventing barrier formation. This study shows that the LMCs may be a co-culture of pial and arachnoid cells, that the optimal LMC passage range is between passages two and five for experimentation and that the primary human LMCs form a weak barrier when in culture.
Collapse
Affiliation(s)
- Mannthalah Abubaker
- Bernal Institute, University of Limerick, Castletroy, Limerick, Ireland
- School of Engineering, University of Limerick, Castletroy, Limerick, Ireland
| | - Aisling Greaney
- Bernal Institute, University of Limerick, Castletroy, Limerick, Ireland
- School of Engineering, University of Limerick, Castletroy, Limerick, Ireland
| | - David Newport
- Bernal Institute, University of Limerick, Castletroy, Limerick, Ireland
- School of Engineering, University of Limerick, Castletroy, Limerick, Ireland
| | - John J E Mulvihill
- Bernal Institute, University of Limerick, Castletroy, Limerick, Ireland
- School of Engineering, University of Limerick, Castletroy, Limerick, Ireland
| |
Collapse
|
4
|
Gratpain V, Loriot A, Bottemanne P, d’Auria L, Terrasi R, Payen VL, van Pesch V, Muccioli GG, des Rieux A. Influence of a pro-inflammatory stimulus on the miRNA and lipid content of human dental stem cell-derived extracellular vesicles and their impact on microglial activation. Heliyon 2024; 10:e27025. [PMID: 38463764 PMCID: PMC10923689 DOI: 10.1016/j.heliyon.2024.e27025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 02/21/2024] [Accepted: 02/22/2024] [Indexed: 03/12/2024] Open
Abstract
Neuro-inflammation occurs in numerous disorders such as multiple sclerosis, Alzheimer's disease and Parkinson's disease. However, anti-inflammatory drugs for the central nervous system have failed to show significant improvement when compared to a placebo in clinical trials. Our previous work demonstrated that stem cells from the apical papilla (SCAP) can decrease neuro-inflammation and stimulate oligodendrocyte progenitor cell differentiation. One hypothesis is that the therapeutic effect of SCAP could be mediated by their secretome, including extracellular vesicles (EV). Here, our objectives were to characterize SCAP-EV and to study their effect on microglial cells. We isolated EV from non-activated SCAP and from SCAP activated with TNFα and IFN-γ and characterized them according to their size, EV markers, miRNA and lipid content. Their ability to decrease pro-inflammatory cytokine expression in vitro and ex vivo was also assessed. We showed that the miRNA content was impacted by a pro-inflammatory environment but not their lipid composition. SCAP-EV reduced the expression of pro-inflammatory markers in LPS-activated microglial cells while their effect was limited on mouse spinal cord sections. In conclusion, we were able to isolate EV from SCAP, to show that their miRNA content was impacted by a pro-inflammatory stimulus, and to describe that SCAP-EV and not the protein fraction of conditioned medium could reduce pro-inflammatory marker expression in LPS-activated BV2 cells.
Collapse
Affiliation(s)
- Viridiane Gratpain
- Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Université Catholique de Louvain, UCLouvain, 1200, Brussels, Belgium
| | - Axelle Loriot
- de Duve Institute, Computational Biology Unit, Université Catholique de Louvain, UCLouvain, 1200, Brussels, Belgium
| | - Pauline Bottemanne
- Louvain Drug Research Institute, Bioanalysis and Pharmacology of Bioactive Lipids, Université Catholique de Louvain, UCLouvain, 1200, Brussels, Belgium
| | - Ludovic d’Auria
- Institute of Neuroscience, Neurochemistry Unit, Université Catholique de Louvain, UCLouvain, 1200, Brussels, Belgium
| | - Romano Terrasi
- Louvain Drug Research Institute, Bioanalysis and Pharmacology of Bioactive Lipids, Université Catholique de Louvain, UCLouvain, 1200, Brussels, Belgium
| | - Valéry L. Payen
- Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Université Catholique de Louvain, UCLouvain, 1200, Brussels, Belgium
| | - Vincent van Pesch
- Institute of Neuroscience, Neurochemistry Unit, Université Catholique de Louvain, UCLouvain, 1200, Brussels, Belgium
| | - Giulio G. Muccioli
- Louvain Drug Research Institute, Bioanalysis and Pharmacology of Bioactive Lipids, Université Catholique de Louvain, UCLouvain, 1200, Brussels, Belgium
| | - Anne des Rieux
- Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Université Catholique de Louvain, UCLouvain, 1200, Brussels, Belgium
| |
Collapse
|
5
|
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.
Collapse
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.)
| |
Collapse
|
6
|
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.
Collapse
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.)
| |
Collapse
|
7
|
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.
Collapse
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.)
| |
Collapse
|
8
|
Cai L, Cui Y, Guo D, Chen H, Li J, Zhou X, Xie J. Microenvironmental Stiffness Directs Chondrogenic Lineages of Stem Cells from the Human Apical Papilla via Cooperation between ROCK and Smad3 Signaling. ACS Biomater Sci Eng 2023; 9:4831-4845. [PMID: 36797839 DOI: 10.1021/acsbiomaterials.2c01371] [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: 02/18/2023]
Abstract
Cell-based cartilage tissue engineering faces a great challenge in the repair process, partly due to the special physical microenvironment. Human stem cell from apical papilla (hSCAP) shows great potential as seed cells because of its versatile differentiation capacity. However, whether hSCAP has potent chondrogenic differentiation ability in the physical microenvironment of chondroid remains unknown. In this study, we fabricated poly(dimethylsiloxane) (PDMS) substrates with different stiffnesses and investigated the chondrogenic differentiation potential of hSCAPs. First, we found that hSCAPs cultured on soft substrates spread more narrowly accompanied by cortical actin organization, a hallmark of differentiated chondrocytes. On the contrary, stiff substrates were favorable for cell spreading and stress fiber formation. More importantly, the increased chondrogenic differentiation of hSCAPs seeded on soft substrates was confirmed by characterizing increased extracellular proteoglycan aggregation through Alcian blue staining and Safranin O staining and enhanced markers toward chondrogenic differentiation including SRY-box transcription factor 9 (Sox9), type II collagen (Col2), and aggrecan in both normal α-minimum essential medium (αMEM) and specific chondrogenic medium (CM) culture conditions. Then, we investigated the mechanosensing/mechanotransduction governing the chondrogenic differentiation of hSCAPs in response to different stiffnesses and found that stiffness-sensitive integrin β1 and focal adhesion kinase (FAK) were essential for mechanical signal perception and were oriented at the start of mechanotransduction induced by matrix stiffness. We next showed that the increased nuclear accumulation of Smad3 signaling and target Sox9 facilitated the chondrogenic differentiation of hSCAPs on the soft substrates and further verified the importance of Rho-associated protein kinase (ROCK) signaling in regulating chondrogenic differentiation and its driving factors, Smad3 and Sox9. By using SIS3, the specific inhibitor of p-Smad3, and miRNA targeting Rho-associated protein kinase 1 (ROCK-1), we finally confirmed the importance of ROCK/Smad3/Sox9 axis in the chondrogenic differentiation of hSCAPs in response to substrate stiffness. These results help us to increase the understanding of how microenvironmental stiffness directs chondrogenic differentiation from the aspects of mechanosensing, mechanotransduction, and cell fate decision, which will be of great value in the application of hSCAPs in cartilage tissue engineering.
Collapse
Affiliation(s)
- Linyi Cai
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Yujia Cui
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Daimo Guo
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Hao Chen
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Jiazhou Li
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Xuedong Zhou
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Jing Xie
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| |
Collapse
|
9
|
Zhou Y, Xu T, Wang C, Han P, Ivanovski S. Clinical usage of dental stem cells and their derived extracellular vesicles. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2023; 199:297-326. [PMID: 37678975 DOI: 10.1016/bs.pmbts.2023.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
Stem cell-based therapies remain at the forefront of tissue engineering and regenerative medicine because stem cells are a unique cell source with enormous potential to treat incurable diseases and even extend lifespans. The search for the best stem cell candidates continues to evolve and in recent years, dental stem cells have received significant attention due to their easy accessibility, high plasticity, and multipotential properties. Dental stem cells have been the subject of extensive research in both animal models and human clinical trials over the past two decades, and have demonstrated significant potential in ocular therapy, bone tissue engineering, and, of course, therapeutic applications in dentistry such as regenerative endodontics and periodontal tissue regeneration. These new sources of cells may be advantageous for cellular therapy and the advancement of regenerative medicine strategies, such as allogeneic transplantation or therapy with extracellular vesicles (EVs), which are functional nanoscale membrane vesicles produced by cells. This chapter discusses the accumulating research findings on cell-based regenerative therapy utilizing dental stem cells and their derived EVs, which could be a viable tool for the treatment of a variety of diseases and hence extremely valuable to mankind in the long run.
Collapse
Affiliation(s)
- Yinghong Zhou
- The University of Queensland, School of Dentistry, Brisbane, QLD, Australia.
| | - Tian Xu
- The University of Queensland, School of Dentistry, Brisbane, QLD, Australia.
| | - Cong Wang
- The University of Queensland, School of Dentistry, Brisbane, QLD, Australia.
| | - Pingping Han
- The University of Queensland, School of Dentistry, Brisbane, QLD, Australia.
| | - Sašo Ivanovski
- The University of Queensland, School of Dentistry, Brisbane, QLD, Australia.
| |
Collapse
|
10
|
Camassari JR, de Sousa ITC, Müller KC, Puppin-Rontani RM. The Self Assembling peptide P 11-4 influences viability and osteogenic differentiation of stem cells of the apical papilla (SCAP). J Dent 2023; 134:104551. [PMID: 37201776 DOI: 10.1016/j.jdent.2023.104551] [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: 02/06/2023] [Revised: 05/11/2023] [Accepted: 05/15/2023] [Indexed: 05/20/2023] Open
Abstract
OBJECTIVE to analyze the effect of P11-4 self-assembly peptide on cell viability and osteogenic capacity of SCAPs through mineral deposition and gene expression of osteogenic markers. . METHODS SCAPs were seeded in contact with P11-4 (10 µg/ml, 100 µg/ml and 1 mg/ml) solution. Cell viability was evaluated using a colorimetric assay MTT (3-(4,5-Dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium Bromide) in an experimental time of 24, 48 and 72 h (n=7). Mineral deposition and quantification provided by the cells was tested using the Alizarin Red staining and Cetylpyridinium Chloride (CPC), respectively, after 30 days (n=4). Gene expression of Runt-related transcription factor 2 (RUNX2), Alkaline phosphatase (ALP) and Osteocalcin (OCN) was quantified using quantitative polymerase chain reaction (RT-qPCR), at 3 and 7 days with Glyceraldehyde 3-phosphate dehydrogenase (GAPDH) as the housekeeping gene, and relative gene expression was measured using the ΔΔCq method. Data were analyzed using Kruskall-Wallis followed by multiple comparisons, and T-test for gene expression with α=0.05. RESULTS All tested concentrations (10 µg/ml, 100 µg/ml and 1 mg/ml) were not cytotoxic at time 24 and 48 h. After 72 h, a slight decrease in cell viability was observed for the lowest concentration (10 µg/ml). The concentration of 100 µg/ml P11-4 showed the highest mineral deposition. However, qPCR analysis of P11-4 (10 µg/ml) showed upregulation of RUNX2 and OCN at 3 days, with downregulation of ALP at 3 and 7d. CONCLUSION P11-4 did not affect cell viability, induced mineral deposition in SCAPs, and upregulated the expression of RUNX2 and OCN genes at 3 days, while downregulating ALP expression at 3 and 7 days. CLINICAL SIGNIFICANCE Based on the results obtained in this study it can be stated that self-assembling peptide P11-4 is a potential candidate to induce mineralization on dental stem cells for regenerative purposes and also for a clinical use as a capping agent without compromising the cells health.
Collapse
Affiliation(s)
- Jessica Rodrigues Camassari
- PhD Student at Department of Restorative Dentistry, Dental Materials Division, University of Campinas, Av Limeira, 901. CEP 13.414-018, Piracicaba, São Paulo, Brazil
| | - Iago Torres Cortês de Sousa
- PhD Student at Department of Biosciences, Physiological Sciences Division, University of Campinas, Av Limeira, 901. CEP 13.414-018, Piracicaba, São Paulo, Brazil
| | - Karina Cogo Müller
- Full Professor of Pharmacology, Anesthesiology and Therapeutics Division, University of Campinas, Av Limeira, 901. CEP 13.414-018, Piracicaba, São Paulo, Brazil
| | - Regina Maria Puppin-Rontani
- Full Professor of Pediatric Dentistry, University State of Campinas, Av Limeira, 901. CEP 13.414-018, Piracicaba, São Paulo, Brazil.
| |
Collapse
|
11
|
Sanz-Serrano D, Sánchez-de-Diego C, Mercade M, Ventura F. Dental Stem Cells SV40, a new cell line developed in vitro from human stem cells of the apical papilla. Int Endod J 2023; 56:502-513. [PMID: 36585930 DOI: 10.1111/iej.13887] [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: 12/04/2021] [Revised: 12/24/2022] [Accepted: 12/26/2022] [Indexed: 01/01/2023]
Abstract
AIM To establish and fully characterize a new cell line from human stem cells of the apical papilla (SCAPs) through immortalization with an SV40 large T antigen. METHODOLOGY Human SCAPs were isolated and transfected with an SV40 large T antigen and treated with puromycin to select the infected population. Expression of human mesenchymal surface markers CD73, CD90 and CD105 was assessed in the new cell line named Dental Stem Cells SV40 (DSCS) by flow cytometry at early and late passages. Cell contact inhibition and proliferation were also analysed. To evaluate trilineage differentiation, quantitative polymerase chain reaction and histological staining were performed. RESULTS DSCS cell flow cytometry confirmed the expression of mesenchymal surface markers even in late passages [100% positive for CD73 and CD90 and 98.9% for CD105 at passage (P) 25]. Fewer than 0.5% were positive for haematopoietic cell markers (CD45 and CD34). DSCS cells also showed increased proliferation when compared to the primary culture after 48 h, with a doubling time of 23.46 h for DSCS cells and 40.31 h for SCAPs, and retained the capacity to grow for >45 passages (150 population doubling) and their spindle-shaped morphology. Trilineage differentiation potential was confirmed through histochemical staining and gene expression of the chondrogenic markers SOX9 and COL2A1, adipogenic markers CEBPA and LPL, and osteogenic markers COL1A1 and ALPL. CONCLUSIONS The new cell line derived from human SCAPs has multipotency, retains its morphology and expression of mesenchymal surface markers and shows higher proliferative capacity even at late passages (P45). DSCS cells can be used for in vitro study of root development and to achieve a better understanding of the regenerative mechanisms.
Collapse
Affiliation(s)
- Diana Sanz-Serrano
- Department of Dentistry, Universitat de Barcelona, L'Hospitalet de Llobregat, Spain
| | - Cristina Sánchez-de-Diego
- Department of Biomedical Engineering, University of Wisconsin, Madison, Wisconsin, USA.,University of Wisconsin Carbone Cancer Center, Madison, Wisconsin, USA
| | - Montse Mercade
- Department of Dentistry, Universitat de Barcelona, IDIBELL, L'Hospitalet de Llobregat, Spain.,Researcher at IDIBELL Institute, L'Hospitalet de Llobregat, Spain
| | - Francesc Ventura
- Researcher at IDIBELL Institute, L'Hospitalet de Llobregat, Spain.,Departament de Ciències Fisiològiques, Universitat de Barcelona, IDIBELL, L'Hospitalet de Llobregat, Spain
| |
Collapse
|
12
|
Effects of EDTA and saline as the final irrigation in regenerative endodontic procedures on the migration, proliferation, and differentiation of human stem cells from the apical papilla. Clin Oral Investig 2023; 27:1973-1980. [PMID: 36790627 DOI: 10.1007/s00784-023-04919-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 02/08/2023] [Indexed: 02/16/2023]
Abstract
OBJECTIVES To evaluate the effect of EDTA and saline as the final irrigation in regenerative endodontic procedures (REPS) on the attachment, proliferation, migration, and differentiation of stem cells from the apical papilla (SCAPs). MATERIALS AND METHODS Dentin specimens from 140 human third molars were irrigated with various protocols-group 1: normal sterile saline (NSS), group 2: EDTA, group 3: EDTA then 5 mL NSS, or group 4: EDTA then 20 mL NSS. The specimens were used in cell assays. For cell proliferation, SCAPs were seeded on dentin, and the cell viability on days 1, 3, and 7 was determined using an MTT assay. At day 3, the attached cells' morphology was observed using SEM, and cell migration was investigated using a transwell migration assay. The ALP activity and odonto/osteogenic differentiation gene expression were evaluated at days 7, 14, and 21 using an ALP activity assay and RT-qPCR. RESULTS On days 3 and 7, group 4 demonstrated more viable cells than group 1 (p < 0.01). The amount of migrated cells in groups 2, 3, and 4 was greater compared with group 1 (p < 0.05). Moreover, SCAP differentiation was similar between groups. CONCLUSIONS Irrigating dentin with EDTA alone or with EDTA then NSS promoted SCAP migration. However, a final irrigation with 20 mL NSS after EDTA promoted SCAP proliferation without affecting their differentiation. CLINICAL RELEVANCE When using a blood clot as a scaffold, a final flushing with 20 mL NSS after EDTA could be beneficial for clinical REP protocols.
Collapse
|
13
|
Ngai P, Lee AHC, Xu J, Chang JWW, Liu J, Hu M, Sun Z, Neelakantan P, Li X, Zhang C. Effects of L-Chg 10-Teixobactin on Viability, Proliferation, and Osteo/Odontogenic Differentiation of Stem Cells from Apical Papilla. J Endod 2023; 49:162-168. [PMID: 36592717 DOI: 10.1016/j.joen.2022.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 11/04/2022] [Accepted: 11/09/2022] [Indexed: 01/01/2023]
Abstract
INTRODUCTION Intracanal medicament is one of the essential steps for ensuring success in regenerative endodontic procedures. L-Chg10-teixobactin is a novel antimicrobial agent that exhibited potent antibacterial and antibiofilm effects against Enterococcusfaecalis at low concentrations compared with ampicillin. At the same time, its cytotoxicity on dental stem cells has not been studied. This study aimed to investigate the effects of L-Chg10-teixobactin on the viability, proliferation, migration, and osteo/odontogenic differentiation of stem cells from apical papilla (SCAPs). MATERIALS AND METHODS SCAPs isolated from immature human third molars were treated with various concentrations of L-Chg10-teixobactin, calcium hydroxide, and dimethyl sulfoxide. The viability and proliferation of SCAPs were assessed using the LIVE/DEAD Viability/Cytotoxicity Kit and Cell Counting Kit-8. A scratch wound healing test was used to evaluate the lateral migration capacity of SCAPs. Alkaline phosphatase (ALP) activity, calcium mineralization ability tests -ie, ALP staining and alizarin red S staining, and quantitative real-time polymerase chain reaction were performed to assess the osteo /odontogenic differentiation of SCAPs. RESULTS The tested concentrations of L-Chg10-teixobactin (0.01, 0.02, and 0.03 mg/mL), 1 mg/mL calcium hydroxide, and 0.03% dimethyl sulfoxide had no significant cytotoxic effect on SCAPs at any time point (P > .05). Besides, there were no significant differences between the control and experimental groups in SCAPs' viability, proliferation, and migration. L-Chg10-teixobactin upregulated the gene expression of osteo/odontogenic markers in SCAPs, while no significant difference was found in the ALP activity and alizarin red S staining. CONCLUSIONS L-Chg10-teixobactin demonstrated excellent biocompatibility on SCAPs at concentrations from 0.01 to 0.03 mg/mL and potentially enhance the osteo/odontogenic differentiation of SCAPs; suggesting its promising role as root canal medicament for regenerative endodontic procedures.
Collapse
Affiliation(s)
- Ping Ngai
- Restorative Dental Sciences, Endodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, P. R. China
| | - Angeline Hui Cheng Lee
- Restorative Dental Sciences, Endodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, P. R. China
| | - Jian Xu
- Department of Dentistry, Longgang ENT Hospital, Shenzhen Longgang Institute of Stomatology, Shenzhen, P. R. China
| | - Jeffrey Wen Wei Chang
- Restorative Dental Sciences, Endodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, P. R. China
| | - Junqing Liu
- Restorative Dental Sciences, Endodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, P. R. China
| | - Mingxin Hu
- Restorative Dental Sciences, Endodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, P. R. China
| | - Zhenquan Sun
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong, SAR, P. R. China
| | - Prasanna Neelakantan
- Restorative Dental Sciences, Endodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, P. R. China
| | - Xuechen Li
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong, SAR, P. R. China.
| | - Chengfei Zhang
- Restorative Dental Sciences, Endodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, P. R. China.
| |
Collapse
|
14
|
Azaryan E, Emadian Razavi F, Hanafi-Bojd MY, Alemzadeh E, Naseri M. Dentin regeneration based on tooth tissue engineering: A review. Biotechnol Prog 2022; 39:e3319. [PMID: 36522133 DOI: 10.1002/btpr.3319] [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: 06/14/2022] [Revised: 11/22/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022]
Abstract
Missing or damaged teeth due to caries, genetic disorders, oral cancer, or infection may contribute to physical and mental impairment that reduces the quality of life. Despite major progress in dental tissue repair and those replacing missing teeth with prostheses, clinical treatments are not yet entirely satisfactory, as they do not regenerate tissues with natural teeth features. Therefore, much of the focus has centered on tissue engineering (TE) based on dental stem/progenitor cells to create bioengineered dental tissues. Many in vitro and in vivo studies have shown the use of cells in regenerating sections of a tooth or a whole tooth. Tooth tissue engineering (TTE), as a promising method for dental tissue regeneration, can form durable biological substitutes for soft and mineralized dental tissues. The cell-based TE approach, which directly seeds cells and bioactive components onto the biodegradable scaffolds, is currently the most potential method. Three essential components of this strategy are cells, scaffolds, and growth factors (GFs). This study investigates dentin regeneration after an injury such as caries using TE and stem/progenitor cell-based strategies. We begin by discussing about the biological structure of a dentin and dentinogenesis. The engineering of teeth requires knowledge of the processes that underlie the growth of an organ or tissue. Then, the three fundamental requirements for dentin regeneration, namely cell sources, GFs, and scaffolds are covered in the current study, which may ultimately lead to new insights in this field.
Collapse
Affiliation(s)
- Ehsaneh Azaryan
- Student Research Committee, Birjand University of Medical Sciences, Birjand, Iran.,Cellular and Molecular Research Center, Department of Molecular Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Fariba Emadian Razavi
- Dental Research Center, Faculty of Dentistry, Birjand University of Medical Sciences, Birjand, Iran
| | - Mohammad Yahya Hanafi-Bojd
- Cellular and Molecular Research Center, Birjand University of Medical sciences, Birjand, Iran.,Department of Pharmaceutics and Pharmaceutical nanotechnology, School of Pharmacy, Birjand University of Medical Sciences, Birjand, Iran
| | - Esmat Alemzadeh
- Department of Medical Biotechnology, Faculty of medicine, Birjand University of Medical Sciences, Birjand, Iran.,Infectious Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Mohsen Naseri
- Cellular and Molecular Research Center, Department of Molecular Medicine, Birjand University of Medical Sciences, Birjand, Iran
| |
Collapse
|
15
|
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.
Collapse
|
16
|
Li FC, Hussein H, Magalhaes M, Selvaganapathy PR, Kishen A. Deciphering Stem Cell from Apical Papilla - Macrophage Choreography using a Novel 3D Organoid System. J Endod 2022; 48:1063-1072.e7. [PMID: 35513088 DOI: 10.1016/j.joen.2022.04.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 04/18/2022] [Accepted: 04/18/2022] [Indexed: 01/01/2023]
Abstract
INTRODUCTION Immune cell - mesenchymal stem cell crosstalk modulates the process of repair and regeneration. In this study, a novel heterogenous cell containing matrix based three-dimensional (3D) tissue-construct was employed to study the interactions between stem cells from apical papilla (SCAP) and macrophage for a comprehensive understanding on the cellular signalling mechanisms guiding inflammation and repair. METHODS SCAP and macrophages were seeded with collagen in 3D printed molds to generate self-assembled tissue-constructs, which were exposed to three conditions: no stimulation, lipopolysaccharide (LPS), and interleukin-4 (IL-4) from 0 to 14 days. Specimens from each group were evaluated for cellular interactions, inflammatory mediators (IL-1β, TNF-α, MDC, MIP-1β, MCP-1, IL-6, IL-8, TGF-β1, IL-1RA, IL-10), expression of surface markers (CD80, 206), transcription factors (pSTAT1, pSTAT6) and SCAP differentiation markers (DSPP, DMP-1, and alizarin red) using confocal laser scanning microscopy and multiplex cytokine profiling from 2 to 14 days. RESULTS SCAP and macrophages displayed a cytokine-mediated interaction and differentiation characteristics. The increased pro-inflammatory cytokines/chemokines: IL-1β, TNF-α, MDC and MIP-1β in the earlier phase followed by the higher ratio of pSTAT6/pSTAT1 and decreased CD206 (p<0.05), indicated a distinct polarization behavior in macrophages during repair in LPS group. Conversely, the equal ratio of pSTAT6/pSTAT1, late increase in CD206 and amplified secretion of IL-1RA, IL-10 and TGF-β1 (p<0.05) in the anti-inflammatory environment, directed alternative macrophage polarization, promoting SCAP differentiation and tissue modeling in IL-4 group. CONCLUSIONS The novel 3D organoid system developed in this study allowed a comprehensive analysis of the SCAP-macrophage interactions during inflammation and healing, providing a deeper insight on the periapical dynamics of immature tooth.
Collapse
Affiliation(s)
- Fang-Chi Li
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Hebatullah Hussein
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada; Faculty of Dentistry, Ain Shams University, Endodontics Department, Cairo, Egypt
| | - Marco Magalhaes
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - P Ravi Selvaganapathy
- Department of Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada
| | - Anil Kishen
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada.
| |
Collapse
|
17
|
De Berdt P, Vanvarenberg K, Ucakar B, Bouzin C, Paquot A, Gratpain V, Loriot A, Payen V, Bearzatto B, Muccioli GG, Gatto L, Diogenes A, des Rieux A. The human dental apical papilla promotes spinal cord repair through a paracrine mechanism. Cell Mol Life Sci 2022; 79:252. [PMID: 35445984 PMCID: PMC11072347 DOI: 10.1007/s00018-022-04210-8] [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: 12/20/2021] [Revised: 02/13/2022] [Accepted: 02/15/2022] [Indexed: 11/03/2022]
Abstract
Traumatic spinal cord injury is an overwhelming condition that strongly and suddenly impacts the patient's life and her/his entourage. There are currently no predictable treatments to repair the spinal cord, while many strategies are proposed and evaluated by researchers throughout the world. One of the most promising avenues is the transplantation of stem cells, although its therapeutic efficiency is limited by several factors, among which cell survival at the lesion site. In our previous study, we showed that the implantation of a human dental apical papilla, residence of stem cells of the apical papilla (SCAP), supported functional recovery in a rat model of spinal cord hemisection. In this study, we employed protein multiplex, immunohistochemistry, cytokine arrays, RT- qPCR, and RNAseq technology to decipher the mechanism by which the dental papilla promotes repair of the injured spinal cord. We found that the apical papilla reduced inflammation at the lesion site, had a neuroprotective effect on motoneurons, and increased the apoptosis of activated macrophages/ microglia. This therapeutic effect is likely driven by the secretome of the implanted papilla since it is known to secrete an entourage of immunomodulatory or pro-angiogenic factors. Therefore, we hypothesize that the secreted molecules were mainly produced by SCAP, and that by anchoring and protecting them, the human papilla provides a protective niche ensuring that SCAP could exert their therapeutic actions. Therapeutic abilities of the papilla were demonstrated in the scope of spinal cord injury but could very well be beneficial to other types of tissue.
Collapse
Affiliation(s)
- P De Berdt
- Louvain Drug Research Institute (LDRI), Advanced Drug Delivery and Biomaterials (ADDB), Université Catholique de Louvain (UCLouvain), 1200, Brussels, Belgium
| | - K Vanvarenberg
- Louvain Drug Research Institute (LDRI), Advanced Drug Delivery and Biomaterials (ADDB), Université Catholique de Louvain (UCLouvain), 1200, Brussels, Belgium
| | - B Ucakar
- Louvain Drug Research Institute (LDRI), Advanced Drug Delivery and Biomaterials (ADDB), Université Catholique de Louvain (UCLouvain), 1200, Brussels, Belgium
| | - C Bouzin
- IREC Imaging platform (2IP), Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCLouvain), 1200, Brussels, Belgium
| | - A Paquot
- Louvain Drug Research Institute (LDRI), Bioanalysis and Pharmacology of Bioactive Lipids (BPBL), Université Catholique de Louvain (UCLouvain), 1200, Brussels, Belgium
| | - V Gratpain
- Louvain Drug Research Institute (LDRI), Advanced Drug Delivery and Biomaterials (ADDB), Université Catholique de Louvain (UCLouvain), 1200, Brussels, Belgium
| | - A Loriot
- de Duve Institute, Computational Biology and Bioinformatics Unit (CBIO), Université Catholique de Louvain (UCLouvain), Brussels, Belgium
| | - V Payen
- Louvain Drug Research Institute (LDRI), Advanced Drug Delivery and Biomaterials (ADDB), Université Catholique de Louvain (UCLouvain), 1200, Brussels, Belgium
| | - B Bearzatto
- Institut de Recherche Expérimentale et Clinique (IREC), Center for Applied Molecular Technologies (CTMA), Université Catholique de Louvain (UCLouvain), Brussels, Belgium
| | - G G Muccioli
- Louvain Drug Research Institute (LDRI), Bioanalysis and Pharmacology of Bioactive Lipids (BPBL), Université Catholique de Louvain (UCLouvain), 1200, Brussels, Belgium
| | - L Gatto
- de Duve Institute, Computational Biology and Bioinformatics Unit (CBIO), Université Catholique de Louvain (UCLouvain), Brussels, Belgium
| | - A Diogenes
- Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - A des Rieux
- Louvain Drug Research Institute (LDRI), Advanced Drug Delivery and Biomaterials (ADDB), Université Catholique de Louvain (UCLouvain), 1200, Brussels, Belgium.
| |
Collapse
|
18
|
Effect of taxifolin and epigallocatechin-3-gallate on biomineralization potential of stem cells from dental apical papilla. Arch Oral Biol 2022; 138:105413. [DOI: 10.1016/j.archoralbio.2022.105413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 03/11/2022] [Accepted: 03/18/2022] [Indexed: 11/24/2022]
|
19
|
Fu Y, Ma D, Fan F, Sun T, Han R, Yang Y, Zhang J. Noncanonical Wnt5a Signaling Suppresses Hippo/TAZ-Mediated Osteogenesis Partly Through the Canonical Wnt Pathway in SCAPs. Drug Des Devel Ther 2022; 16:469-483. [PMID: 35237028 PMCID: PMC8882979 DOI: 10.2147/dddt.s350698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 02/06/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose Stem cells from the apical papilla (SCAPs) are promising seed cells for tissue regeneration medicine and possess the osteogenic differentiation potential. Wnt5a, a typical ligand of the noncanonical Wnt pathway, exhibits diverse roles in the regulation of osteogenesis. The transcriptional co-activator with PDZ-binding motif (TAZ, WWTR1) is a core regulator in the Hippo pathway and regulates stem behavior including osteogenic differentiation. This study aims to examine how Wnt5a regulates SCAPs osteogenesis and explore the precise mechanistic relationship between Wnt5a and TAZ. Methods SCAPs were isolated from developing apical papilla tissue of extracted human immature third molars in vitro. ALP staining, ALP activity and Alizarin red staining were used to evaluate osteogenic capacity. Osteogenic-related factors were assessed by qRT-PCR or Western blotting. Additionally, the receptor tyrosine kinase-like orphan receptor 2 (ROR2) was detected by immunocytofluorescence staining and silenced by small interfering RNA to verify the function of Wnt5a/ROR2 in TAZ-mediated osteogenesis. And we constructed TAZ-overexpression and β-catenin-overexpression SCAPs generated by lentivirus to explore the precise mechanistic relationship between Wnt5a and TAZ. Results Wnt5a (100ng/mL) significantly suppressed ALP activity, mineralization nodules formation, expression of osteogenic-related factors. Meanwhile, it decreased the expression of TAZ mRNA and protein. TAZ overexpression promoted osteogenesis of SCAPs while Wnt5a could block TAZ-mediated osteogenesis. Furthermore, ROR2 siRNA (siROR2) was found to upregulate TAZ and canonical Wnt pathway signaling related molecules such as β-catenin, GSK3β and p-GSK3β. The suppression of Wnt5a/ROR2 on osteogenesis was significantly reversed by β-catenin overexpression through Wnt5a/ROR2/β-catenin/TAZ pathway. Conclusion Taken together, the present study demonstrates that Wnt5a suppresses TAZ-mediated osteogenesis of SCAPs and there may be a Wnt5a/ROR2/β-catenin/TAZ pathway regulating osteogenesis of SCAPs. Moreover, Wnt5a could be a candidate for regulators in tissue regeneration.
Collapse
Affiliation(s)
- Yajing Fu
- Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, People’s Republic of China
| | - Dan Ma
- Department of Orthodontics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, People’s Republic of China
| | - Fengyan Fan
- Department of Orthodontics, Hangzhou Stomatological Hospital, Hangzhou, People’s Republic of China
| | - Tongke Sun
- Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, People’s Republic of China
| | - Ruiqi Han
- Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, People’s Republic of China
| | - Yanran Yang
- Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, People’s Republic of China
| | - Jun Zhang
- Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, People’s Republic of China
- Correspondence: Jun Zhang, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, No. 44-1 Wenhua Road West, Jinan, People’s Republic of China, Tel +86 139 5310 9816, Email
| |
Collapse
|
20
|
Wang S, Wang Z, Su H, Chen F, Ma M, Yu W, Ye G, Cen S, Mi R, Wu X, Deng W, Feng P, Zeng C, Shen H, Wu Y. Effects of long-term culture on the biological characteristics and RNA profiles of human bone-marrow-derived mesenchymal stem cells. MOLECULAR THERAPY-NUCLEIC ACIDS 2021; 26:557-574. [PMID: 34631285 PMCID: PMC8479280 DOI: 10.1016/j.omtn.2021.08.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 08/12/2021] [Indexed: 12/16/2022]
Abstract
Expansion in vitro prior to mesenchymal stem cells (MSCs) application is a necessary process. Functional and genomic stability has a crucial role in stem-cell-based therapies. However, the exact expression and co-expressed profiles of coding and non-coding RNAs in human bone marrow (BM)-MSCs in vitro aging are still lacking. In the present studies, the change of morphology, immunophenotype, and capacity of proliferation, differentiation, and immunoregulation of MSCs at passage (P) 4, P6, P8, P10, and P12 were investigated. RNA sequencing identified that 439 mRNAs, 65 long noncoding RNAs (lncRNAs), 59 microRNAs (miRNAs), and 229 circular RNAs (circRNAs) were differentially expressed (DE) in P12 compared with P4, with a similar trend in P6. Gene ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG), and gene set enrichment analysis (GSEA) identified several significant biological processes and pathways, including binding, ossification, and Wnt and PPAR signaling pathways. Interaction and co-expression/localization analyses were performed for DE mRNAs and lncRNAs, and several key lncRNAs, circRNAs, and important pathways like autophagy and mitophagy were identified in the competing endogenous RNA (ceRNA) network. Some key RNAs found in the bioinformatics analysis were validated. Our studies indicate that replicative senescence of MSCs is a continuous process, including widespread alterations in biological characteristics and global gene expression patterns that need to be considered before therapeutic applications of MSCs.
Collapse
Affiliation(s)
- Shan Wang
- Center for Biotherapy, Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518033, P.R. China
| | - Ziming Wang
- Department of Orthopedics, Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518033, P.R. China
| | - Hongjun Su
- Center for Biotherapy, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou 510120, P.R. China
| | - Fenglei Chen
- Department of Orthopedics, Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518033, P.R. China
| | - Mengjun Ma
- Department of Orthopedics, Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518033, P.R. China
| | - Wenhui Yu
- Department of Orthopedics, Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518033, P.R. China
| | - Guiwen Ye
- Department of Orthopedics, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou 510120, P.R. China
| | - Shuizhong Cen
- Department of Orthopedics, Zhujiang Hospital of Southern Medical Universuty, Guangzhou 510280, P.R. China
| | - Rujia Mi
- Center for Biotherapy, Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518033, P.R. China
| | - Xiaohua Wu
- Center for Biotherapy, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou 510120, P.R. China
| | - Wen Deng
- Center for Biotherapy, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou 510120, P.R. China
| | - Pei Feng
- Center for Biotherapy, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou 510120, P.R. China
| | - Chenying Zeng
- Center for Biotherapy, Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518033, P.R. China
| | - Huiyong Shen
- Department of Orthopedics, Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518033, P.R. China.,Department of Orthopedics, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou 510120, P.R. China
| | - Yanfeng Wu
- Center for Biotherapy, Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518033, P.R. China
| |
Collapse
|
21
|
Srisuwan T, Srisathian A. Improvement of apical papilla cell attachment after erbium, chromium-doped yttrium, scandium, gallium, and garnet laser application: a study in an ex vivo immature tooth model. Lasers Med Sci 2021; 37:1167-1174. [PMID: 34227042 DOI: 10.1007/s10103-021-03368-0] [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: 03/18/2021] [Accepted: 06/28/2021] [Indexed: 10/20/2022]
Abstract
The purposes of this study were (1) to investigate the direct effect of an Er,Cr:YSGG laser on human apical papilla cell (APC) proliferation and mineralization and (2) to examine the effect of Er,Cr:YSGG laser, when applied to an ex vivo immature tooth model, on APC attachment. An Er,Cr:YSGG laser at various power outputs (0.1, 0.5, and 1 W) was used at different positions (2, 5, or 8 mm from the cells) to irradiate cultured APCs. APC proliferation and mineralization were assessed at various intervals. For the cell attachment evaluation, ex vivo tooth models containing dentin samples were irrigated with either EDTA or normal saline solution (NSS) and supplemented with laser activation. Fibronectin-positive-staining cells were counted and analyzed. The number of APCs was significantly greater when power outputs of 0.1 W and 0.5 W were used than when 1 W was used (P < 0.05). The close contact of laser application, at 2 and 5 mm, exerted a negative effect on cell proliferation at 24 and 48 h. The application at 8 mm did not show the deterioration effect. APC mineralization was reduced after laser irradiation, regardless of the power and the tip positioning, at 21 days. APC attachment in all laser-activated groups was significantly greater than in the groups without laser. The use of Er,Cr:YSGG laser significantly promoted APC attachment on the root canal dentin.
Collapse
Affiliation(s)
- Tanida Srisuwan
- Department of Restorative Dentistry and Periodontology, Faculty of Dentistry, Chiang Mai University, Suthep Road, Muang, 50200, Chiang Mai, Thailand.
| | - Apichaya Srisathian
- McCormick Hospital, 133 Kaew-nawarat Road, Muang, 50000, Chiang Mai, Thailand
| |
Collapse
|
22
|
Driesen RB, Gervois P, Vangansewinkel T, Lambrichts I. Unraveling the Role of the Apical Papilla During Dental Root Maturation. Front Cell Dev Biol 2021; 9:665600. [PMID: 34026757 PMCID: PMC8134663 DOI: 10.3389/fcell.2021.665600] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 04/13/2021] [Indexed: 12/12/2022] Open
Abstract
The apical papilla is a stem cell rich tissue located at the base of the developing dental root and is responsible for the progressive elongation and maturation of the root. The multipotent stem cells of the apical papilla (SCAP) are extensively studied in cell culture since they demonstrate a high capacity for osteogenic, adipogenic, and chondrogenic differentiation and are thus an attractive stem cell source for stem cell-based therapies. Currently, only few studies are dedicated to determining the role of the apical papilla in dental root development. In this review, we will focus on the architecture of the apical papilla and describe the specific SCAP signaling pathways involved in root maturation. Furthermore, we will explore the heterogeneity of the SCAP phenotype within the tissue and determine their micro-environmental interaction. Understanding the mechanism of postnatal dental root growth could further aid in developing novel strategies in dental root regeneration.
Collapse
Affiliation(s)
- Ronald B Driesen
- Faculty of Medicine, Hasselt University, Biomedical Research Institute, Cardio and Organ Systems, Hasselt, Belgium
| | - Pascal Gervois
- Faculty of Medicine, Hasselt University, Biomedical Research Institute, Cardio and Organ Systems, Hasselt, Belgium
| | - Tim Vangansewinkel
- Faculty of Medicine, Hasselt University, Biomedical Research Institute, Cardio and Organ Systems, Hasselt, Belgium
| | - Ivo Lambrichts
- Faculty of Medicine, Hasselt University, Biomedical Research Institute, Cardio and Organ Systems, Hasselt, Belgium
| |
Collapse
|
23
|
Wu L, Jiang S, Ge H, Cai Z, Huang X, Zhang C. Effect of Optimized Irrigation With Photon-Induced Photoacoustic Streaming on Smear Layer Removal, Dentin Microhardness, Attachment Morphology, and Survival of the Stem Cells of Apical Papilla. Lasers Surg Med 2021; 53:1105-1112. [PMID: 33764609 DOI: 10.1002/lsm.23394] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 01/11/2021] [Accepted: 02/12/2021] [Indexed: 12/23/2022]
Abstract
BACKGROUND AND OBJECTIVES This study aimed to evaluate the effect of optimized irrigation with photon-induced photoacoustic streaming (PIPS) activation of different irrigants (distilled water or ethylenediaminetetraacetic acid [EDTA]) on smear layer removal, dentin microhardness, attachment morphology, and survival of stem cells of the apical papilla (SCAP) in an organotypic root canal model. STUDY DESIGN/MATERIALS AND METHODS A total of 144 standardized root segments were randomly allocated into 6 groups for irrigation: (i) NaOCl group, (ii) NaOCl + EDTA group, (iii) NaOCl + PIPS (distilled water) group, (iv) NaOCl + PIPS (EDTA) group, (v) NaOCl + EDTA + PIPS (distilled water) group, and (vi) NaOCl + EDTA + PIPS (EDTA) group. Each group was divided into four subgroups for assessment: (i) dentin cleanliness; (ii) dentin microhardness; (iii) cell attachment morphology; and (iv) viable SCAP quantification. RESULTS Compared with the control groups, the NaOCl + EDTA + PIPS (EDTA) group showed higher efficiency in smear layer removal and in increasing SCAP viability with more stretched cellular morphology. There were no statistically significant differences in either smear layer removal effect, dentin microhardness, attachment morphology, or survival of SCAP among the other groups when optimized with PIPS (distilled water or EDTA) (P > 0.05). CONCLUSIONS Our findings indicated that irrigation optimized with PIPS activation of EDTA for 40 seconds was conducive to smear layer removal without additional dentin microhardness decrease. Additionally, this irrigation created more cell-friendly dentin conditioning than other approaches, which was beneficial for the attachment and survival of SCAP. Lasers Surg. Med. © 2021 Wiley Periodicals LLC.
Collapse
Affiliation(s)
- Lixuan Wu
- Fujian Key Laboratory of Oral Diseases, Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Provincial Engineering Research Center of Oral Biomaterial, Fujian Medical University, Fujian, 350002, China.,Department of Stomatology, Stomatological Hospital of Xiamen Medical College, Fujian, 361003, China
| | - Shan Jiang
- School of Stomatology, Shenzhen University Health Science Center, Shenzhen, 518037, China
| | - Huan Ge
- Department of Stomatology, Rui Jin Hospital North, Shanghai Jiaotong University School of Medicine, Shanghai, 201800, China
| | - Zhiyu Cai
- Department of Stomatology, Fujian Medical University Union Hospital, Fuzhou, 350001, China
| | - Xiaojing Huang
- Fujian Key Laboratory of Oral Diseases, Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Provincial Engineering Research Center of Oral Biomaterial, Fujian Medical University, Fujian, 350002, China
| | - Chengfei Zhang
- Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, 999077, China
| |
Collapse
|
24
|
Chen Q, Yuan C, Jiang S, Heng BC, Zou T, Shen Z, Wang P, Zhang C. Small molecules efficiently reprogram apical papilla stem cells into neuron-like cells. Exp Ther Med 2021; 21:546. [PMID: 33850518 DOI: 10.3892/etm.2021.9978] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 09/08/2020] [Indexed: 12/13/2022] Open
Abstract
Stem cell-based therapy may provide a novel approach for neural tissue regeneration. A small molecule cocktail-based culture protocol was previously shown to enhance neurogenic differentiation of stem cells from dental tissues. The present study aimed to investigate the early phase of small molecule-induced neurogenic differentiation of stem cells from the apical papilla (SCAP). SCAP were cultured in neural-induction medium or neural-induction medium with small molecules (NIMS-SCAP) and examined for their cell morphologies. Expression levels of neural progenitor cell-related markers, including Nestin, paired-box gene 6 (Pax6) and Sry-related HMG box 2 (Sox2), were examined using western blotting and immunocytofluorescence. Expression of differentiated neuron-related markers, including neurofilament protein (NFM), neuron-specific nuclear protein (NeuN) and microtubule-associated protein (MAP)-2, were also examined using western blotting, while NFM and MAP2 gene expression and cell proliferation were assessed using reverse transcription-quantitative (RT-q)PCR and Cell Counting Kit (CCK)-8 assays, respectively. SCAP morphology was affected by small molecules after as little as 30 min. Specifically, Nestin, Pax6 and Sox2 expression detected using western blotting was increased by day 3 but then decreased over the course of 7 days with neural induction, while immunocytofluorescence revealed expression of all three markers in NIMS-SCAP. The protein levels of NFM, NeuN and MAP2 on day 7 were significantly upregulated in NIMS-SCAP, as detected using western blotting, while NFM and MAP2 gene expression levels detected using RT-qPCR were significantly increased on days 5 and 7. Proliferation of NIMS-SCAP ceased after 5 days. Electrophysiological analysis showed that only SCAP cultured in NIMS had the functional activity of neuronal cells. Thus, small molecules reprogrammed SCAP into neural progenitor cells within the first 3 days, followed by further differentiation into neuron-like cells.
Collapse
Affiliation(s)
- Qixin Chen
- Restorative Dental Sciences, Endodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong 999077, SAR, P.R. China.,Department of Implant Dentistry, The Affiliated Stomatological Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Changyong Yuan
- Department of Implant Dentistry, The Affiliated Stomatological Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Shan Jiang
- Restorative Dental Sciences, Endodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong 999077, SAR, P.R. China
| | - Boon Chin Heng
- School of Stomatology, Peking University, Beijing 100081, P.R. China
| | - Ting Zou
- Restorative Dental Sciences, Endodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong 999077, SAR, P.R. China
| | - Zhongshan Shen
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, P.R. China
| | - Penglai Wang
- Department of Implant Dentistry, The Affiliated Stomatological Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Chengfei Zhang
- Restorative Dental Sciences, Endodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong 999077, SAR, P.R. China
| |
Collapse
|
25
|
Shen Z, Tsao H, LaRue S, Liu R, Kirkpatrick TC, Souza LCD, Letra A, Silva RM. Vascular Endothelial Growth Factor and/or Nerve Growth Factor Treatment Induces Expression of Dentinogenic, Neuronal, and Healing Markers in Stem Cells of the Apical Papilla. J Endod 2021; 47:924-931. [PMID: 33652017 DOI: 10.1016/j.joen.2021.02.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 02/09/2021] [Accepted: 02/18/2021] [Indexed: 12/21/2022]
Abstract
INTRODUCTION The goal of regenerative endodontic procedures is to preserve and stimulate stem cells from the apical papilla (SCAPs) to develop the pulp-dentin complex using various growth factors and scaffolds. We hypothesized that the treatment of SCAPs with vascular endothelial growth factor (VEGF) or nerve growth factor (NGF) may impact the expression of osteogenic and dentinogenic markers. METHODS The optimum concentration of VEGF and NGF on SCAP viability was assessed and introduced to SCAPs for 6-24 hours. SCAPs were also challenged with Escherichia coli lipopolysaccharide (LPS). Messenger RNA (mRNA) expression of DSPP, DMP1, TGFB1, OCN, SP7, and TWIST1 was examined via quantitative reverse transcription polymerase chain reaction. Immunohistochemistry was used to verify protein expression. In addition, total RNA from NGF-treated SCAPs in the presence or absence of LPS was extracted for RNA sequencing. RESULTS Compared with untreated cells, NGF-treated SCAPs showed markedly higher levels of DSPP, DMP1, and TGFB1 mRNAs (>9-fold change, P < .05), and SCAPs treated with both VEGF and NGF showed a significant increase of DSPP and TGFB1 mRNAs (P < .05). In addition, in LPS-challenged SCAPs, treatment with these growth factors also exhibited increased expression of DSPP, DMP1, and TGFB1 mRNAs, with the most significant change induced by VEGF (P < .05). Immunohistochemistry confirmed increased dentin sialophosphoprotein, dentin matrix acidic phosphoprotein 1, and transforming growth factor beta 1 protein expression in treated SCAPs. RNA sequencing revealed multiple pathways regulated by NGF, including TGF-β and neurogenic pathways. CONCLUSIONS VEGF- and NGF-induced dentinogenic/neuronal/healing marker expression in SCAPs indicates the potential value of applying these growth factors in regenerative endodontic procedures.
Collapse
Affiliation(s)
- Zhen Shen
- Department of Endodontics, University of Texas School of Dentistry at Houston, Houston, Texas
| | - Helen Tsao
- Department of Endodontics, University of Texas School of Dentistry at Houston, Houston, Texas
| | - Sean LaRue
- Department of Endodontics, University of Texas School of Dentistry at Houston, Houston, Texas
| | - Richard Liu
- Department of Endodontics, University of Texas School of Dentistry at Houston, Houston, Texas
| | - Timothy C Kirkpatrick
- Department of Endodontics, University of Texas School of Dentistry at Houston, Houston, Texas
| | - Letícia Chaves de Souza
- Department of Endodontics, University of Texas School of Dentistry at Houston, Houston, Texas; Center for Craniofacial Research, University of Texas School of Dentistry at Houston, Houston, Texas
| | - Ariadne Letra
- Department of Diagnostic and Biomedical Sciences, University of Texas School of Dentistry at Houston, Houston, Texas; Center for Craniofacial Research, University of Texas School of Dentistry at Houston, Houston, Texas
| | - Renato M Silva
- Department of Endodontics, University of Texas School of Dentistry at Houston, Houston, Texas; Center for Craniofacial Research, University of Texas School of Dentistry at Houston, Houston, Texas.
| |
Collapse
|
26
|
Production of TNF-𝛼 by macrophages stimulated with endodontic pathogens and its effect on the biological properties of stem cells of the apical papilla. Clin Oral Investig 2021; 25:5307-5315. [PMID: 33624201 DOI: 10.1007/s00784-021-03839-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 02/15/2021] [Indexed: 01/09/2023]
Abstract
OBJECTIVES The first objective of the present study was to investigate TNF-𝛼 secretion by macrophages stimulated with endodontic pathogens and bacterial cell surface components. The second objective was to assess the in vitro effects of TNF-𝛼 on periostin, cytokine, and matrix metalloproteinase (MMP) secretion by and the viability, proliferation rate, and mineralization potential of stem cells of the apical papilla (SCAP). METHODS TNF-𝛼 secretion by macrophages stimulated with either endodontic pathogens or bacterial surface components was assessed using an enzyme-linked immunosorbent assay (ELISA). The viability and proliferation rate of SCAP treated with TNF-𝛼 were assessed using a colorimetric MTT assay. The mineralization potential of TNF-𝛼-treated SCAP was determined by Alizarin Red staining. Periostin secretion by SCAP was determined by ELISA while cytokine and MMP secretion were assessed using a multiplexing laser bead assay. RESULTS TNF-𝛼 secretion by macrophages increased following a stimulation with Gram-negative and Gram-positive endodontic pathogens. Lipopolysaccharide and lipoteichoic acid also dose-dependently increased the secretion of TNF-𝛼 by macrophages. The viability, proliferation rate, and mineralization activity of SCAP were negatively affected by a TNF-𝛼 treatment. Treating SCAP with TNF-𝛼 attenuated the secretion of periostin and upregulated the secretion of several cytokines and MMPs. CONCLUSIONS TNF-𝛼 exerts deleterious effects on SCAP by affecting their viability, proliferation rate, and mineralization potential. By its ability to induce the secretion of pro-inflammatory cytokines and MMPs by SCAP, TNF-𝛼 can contribute to creating an inflammatory environment, promoting tissue destruction, and consequently interfering with the success of regenerative endodontic therapy. CLINICAL RELEVANCE TNF-𝛼 has deleterious impacts on stem cells of the apical papilla and may compromise the outcome of regenerative endodontic therapy.
Collapse
|
27
|
Zhang R, Liu Y, Qi Y, Zhao Y, Nie G, Wang X, Zheng S. Self-assembled peptide hydrogel scaffolds with VEGF and BMP-2 enhanced in vitro angiogenesis and osteogenesis. Oral Dis 2021; 28:723-733. [PMID: 33512051 DOI: 10.1111/odi.13785] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 01/16/2021] [Accepted: 01/24/2021] [Indexed: 12/31/2022]
Abstract
OBJECTIVES The reconstruction of bone defects remains a major clinical issue. Our study aims to investigate the ability of RATEA16 (RA, [CH3CONH] RADARADARADARADA-[CONH2]) for the sustained delivering VEGF and BMP-2 to promote angiogenesis and osteogenesis in bone reconstruction. MATERIALS AND METHODS We prepared and investigated the characterization of RATEA16. The survival of human umbilical vein endothelial cells (HUVECs) and human stem cells of the apical papilla (SCAPs) encapsulated in RATEA16 hydrogel was detected. Then, we established RA-VEGF/BMP-2 drug delivery systems and measured their drug release pattern. The effects of RA-VEGF scaffolds on HUVECs angiogenesis were investigated in vitro. Then, osteoblastic differentiation capacity of SCAPs with RA-BMP-2 scaffolds was analyzed by ALP activity and expression of osteoblast-related genes. RESULTS A porous nanofiber microstructure endowed this scaffold with the ability to maintain the survival of HUVECs and SCAPs. The RA-VEGF/BMP-2 drug delivery systems exhibited several advantagesin vitro: injectability, biodegradability, good biocompatibility, and noncytotoxicity. Released rhVEGF165 /BMP-2 were proved to promote angiogenesis of HUVECs as well as osteogenesis of SCAPs abilities. CONCLUSION RATEA16 loading with VEGF and BMP-2 might be a potential clinical strategy for tissue engineering, especially in bone reconstruction, due to its ability of delivering growth factors effectively and efficiently.
Collapse
Affiliation(s)
- Ruijuan Zhang
- Department of Preventive Dentistry, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, PR China
| | - Yang Liu
- Department of Preventive Dentistry, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, PR China
| | - Yingqiu Qi
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, PR China
| | - Ying Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, PR China
| | - Guangjun Nie
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, PR China
| | - Xiaozhe Wang
- Department of Preventive Dentistry, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, PR China
| | - Shuguo Zheng
- Department of Preventive Dentistry, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, PR China
| |
Collapse
|
28
|
Shen Z, Wichnieski C, Carneiro E, Garlet GP, Letra A, Silva RM. Expression Profiling and Functional Characterization of MicroRNAs in Apical Periodontitis. J Endod 2020; 47:263-271. [PMID: 33245973 DOI: 10.1016/j.joen.2020.11.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 11/05/2020] [Accepted: 11/11/2020] [Indexed: 12/11/2022]
Abstract
INTRODUCTION MicroRNAs (miRNAs) are evolutionarily conserved small noncoding RNAs that may orchestrate the pathogenesis of apical periodontitis (AP). This study aimed to identify differentially expressed miRNAs and investigate their target gene pathways in AP. METHODS Total RNA was extracted from 10 human AP and 2 healthy apical tissues (controls) and subjected to miRNA sequencing for the identification of differentially expressed miRNAs (>1.5-fold changes). The function of the most up-regulated miRNA was further studied in vitro. miR-10a-5p mimics and inhibitors were introduced to human stem cells from the apical papilla and K-562 cells challenged with lipopolysaccharide, and expressions of predicted target genes were examined via quantitative reverse-transcription polymerase chain reaction and RNA sequencing. RESULTS A total of 852 miRNAs were identified, of which 12 were significantly up-regulated (1.54- to 8.44-fold) and 94 were significantly down-regulated (0.14- to 0.67-fold) in AP. Predicted target genes of these miRNAs are involved in inflammation, pain, and related pathways. miR-10a-5p showed the highest expression levels in AP. Overexpression of miR-10a-5p in LPS-challenged stem cells from the apical papilla resulted in down-regulation of messenger RNA levels of TNFA and up-regulation of interleukin IL10. RNA sequencing of K-562 cells treated with miR-10a-5p mimics and inhibitors identified miR-10a-5p target genes associated with multiple pathways, including macrophage-mediated inflammation and coagulation pathways. CONCLUSIONS Over 100 miRNAs were differentially expressed in AP and appeared to be involved with modulation of genes in inflammatory and immune pathways. MiR-10a-5p was the most significantly up-regulated miRNA in AP and may play a critical role in suppressing inflammation and promoting healing.
Collapse
Affiliation(s)
- Zhen Shen
- Department of Endodontics, University of Texas Health Science Center at Houston, School of Dentistry at Houston, Houston, Texas
| | - Caroline Wichnieski
- Department of Endodontics, Pontifical Catholic University of Paraná, Curitiba, Paraná, Brazil
| | - Everdan Carneiro
- Department of Endodontics, Pontifical Catholic University of Paraná, Curitiba, Paraná, Brazil
| | - Gustavo P Garlet
- Department of Biological Sciences, School of Dentistry of Bauru, University of São Paulo, Bauru, São Paulo, Brazil
| | - Ariadne Letra
- Center for Craniofacial Research, University of Texas School of Dentistry at Houston, Houston, Texas; Department of Diagnostic and Biomedical Sciences, University of Texas Health Science Center at Houston, School of Dentistry at Houston, Houston, Texas
| | - Renato M Silva
- Department of Endodontics, University of Texas Health Science Center at Houston, School of Dentistry at Houston, Houston, Texas; Center for Craniofacial Research, University of Texas School of Dentistry at Houston, Houston, Texas.
| |
Collapse
|
29
|
Queiroz A, Wada MT, Rosin FCP, Pelissari C, Trierveiler M. Effects of serum-free culture media on human apical papilla cells properties. Arch Oral Biol 2020; 121:104962. [PMID: 33171394 DOI: 10.1016/j.archoralbio.2020.104962] [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: 07/23/2020] [Revised: 09/11/2020] [Accepted: 10/19/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVE Aiming at more effective and safer cell therapies, the objective of this study was to evaluate the biological properties of human apical papilla cells cultured in the absence of serum supplementation in comparison to cells cultured with fetal bovine serum (FBS). DESIGN Two apical papilla cell populations were isolated from third molars with incomplete rhizogenesis, and cultured in four different media: minimum essential Eagle medium - alpha modification (alpha-MEM); alpha-MEM supplemented with FBS (alpha-MEM + FBS); Dulbecco's modified Eagle medium/nutrient mixture F-12 (DMEM/F12); and DMEM/F12 supplemented with FBS (DMEM/F12 + FBS). We evaluated their proliferation, clonogenicity, and in vitro osteogenic and chondrogenic differentiation potential. RESULTS Apical papilla cells cultured in DMEM/F12 + FBS and alpha-MEM + FBS were more proliferative than those grown in serum-free media, and also exhibited greater efficiency in colony cell formation. Despite this, all study groups showed immunostaining for the marker of mitosis anti-PHH3. Also, alpha-MEM + FBS, alpha-MEM, and DMEM/F12 + FBS exhibited higher amount of mineralized deposits in vitro than DMEM/F12, while only cells cultured with FBS were able to form spheres in chondrogenic differentiation assay. CONCLUSIONS Our results showed that, although the cultivation of apical papilla cells in a serum-free medium has reduced the properties of cell proliferation and differentiation, these cells are still capable of maintaining their desirable characteristics.
Collapse
Affiliation(s)
- Aline Queiroz
- Laboratory of Stem Cell Biology in Dentistry - LABITRON, Oral and Maxillofacial Pathology Department, School of Dentistry, University of São Paulo, Av Professor Lineu Prestes, 2227, 05508-000, São Paulo, SP, Brazil.
| | - Mariana Taira Wada
- Laboratory of Stem Cell Biology in Dentistry - LABITRON, Oral and Maxillofacial Pathology Department, School of Dentistry, University of São Paulo, Av Professor Lineu Prestes, 2227, 05508-000, São Paulo, SP, Brazil.
| | - Flávia Cristina Perillo Rosin
- General Pathology Department, School of Dentistry, University of São Paulo, Av Professor Lineu Prestes, 2227, 05508-000, São Paulo, SP, Brazil.
| | - Cibele Pelissari
- Laboratory of Stem Cell Biology in Dentistry - LABITRON, Oral and Maxillofacial Pathology Department, School of Dentistry, University of São Paulo, Av Professor Lineu Prestes, 2227, 05508-000, São Paulo, SP, Brazil.
| | - Marília Trierveiler
- Laboratory of Stem Cell Biology in Dentistry - LABITRON, Oral and Maxillofacial Pathology Department, School of Dentistry, University of São Paulo, Av Professor Lineu Prestes, 2227, 05508-000, São Paulo, SP, Brazil.
| |
Collapse
|
30
|
Kandalam S, De Berdt P, Ucakar B, Vanvarenberg K, Bouzin C, Gratpain V, Diogenes A, Montero-Menei CN, des Rieux A. Human dental stem cells of the apical papilla associated to BDNF-loaded pharmacologically active microcarriers (PAMs) enhance locomotor function after spinal cord injury. Int J Pharm 2020; 587:119685. [PMID: 32712253 DOI: 10.1016/j.ijpharm.2020.119685] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 07/14/2020] [Accepted: 07/20/2020] [Indexed: 02/08/2023]
Abstract
There is no treatment for spinal cord injury (SCI) that fully repairs the damages. One strategy is to inject mesenchymal stem cells around the lesion to benefit from their immunomodulatory properties and neuroprotective effect. Our hypothesis was that the combination of dental stem cells from the apical papilla (SCAP) with pharmacologically active microcarriers (PAMs) releasing brain-derived neurotrophic factor (BDNF) would improve rat locomotor function by immunomodulation and neuroprotection. BDNF-PAMs were prepared by solid/oil/water emulsion of poly(L-lactide-co-glycolide) and nanoprecipitated BDNF and subsequent coating with fibronectin. SCAP were then seeded on BDNF-PAMs. SCAP expression of neuronal and immunomodulatory factors was evaluated in vitro. SCAP BDNF-PAMs were injected in a rat spinal cord contusion model and their locomotor function was evaluated by Basso, Beattie, and Bresnahan (BBB) scoring. Impact on inflammation and neuroprotection/axonal growth was evaluated by immunofluorescence. Culture on PAMs induced the overexpression of immunomodulatory molecules and neural/neuronal markers. Injection of SCAP BDNF-PAMs at the lesion site improved rat BBB scoring, reduced the expression of inducible nitric oxide synthase and increased the expression of βIII tubulin, GAP43, and 5-HT. These results confirm the suitability and versatility of PAMs as combined drug and cell delivery system for regenerative medicine applications but also that BDNF-PAMs potentialize the very promising therapeutic potential of SCAP in the scope of SCI.
Collapse
Affiliation(s)
- Saikrishna Kandalam
- Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Université Catholique de Louvain, UCLouvain, 1200 Bruxelles, Belgium; CRCINA, INSERM, Université de Nantes, Université d'Angers, Angers F-49933, France
| | - Pauline De Berdt
- Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Université Catholique de Louvain, UCLouvain, 1200 Bruxelles, Belgium
| | - Bernard Ucakar
- Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Université Catholique de Louvain, UCLouvain, 1200 Bruxelles, Belgium
| | - Kevin Vanvarenberg
- Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Université Catholique de Louvain, UCLouvain, 1200 Bruxelles, Belgium
| | - Caroline Bouzin
- IREC Imaging platform (2IP), Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, UCLouvain, IREC, 1200 Brussels, Belgium
| | - Viridiane Gratpain
- Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Université Catholique de Louvain, UCLouvain, 1200 Bruxelles, Belgium
| | - Anibal Diogenes
- Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | | | - Anne des Rieux
- Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Université Catholique de Louvain, UCLouvain, 1200 Bruxelles, Belgium.
| |
Collapse
|
31
|
Grenier D, Marcoux E, Azelmat J, Ben Lagha A, Gauthier P. Biocompatible combinations of nisin and licorice polyphenols exert synergistic bactericidal effects against Enterococcus faecalis and inhibit NF-κB activation in monocytes. AMB Express 2020; 10:120. [PMID: 32632823 PMCID: PMC7338318 DOI: 10.1186/s13568-020-01056-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 06/26/2020] [Indexed: 12/18/2022] Open
Abstract
Enterococcus faecalis is one of the bacterial species most frequently isolated from persistent endodontic and apical periodontal infections. The aim of the present study was to evaluate the synergistic antibacterial effects of nisin and selected licorice polyphenols (glabridin, licoricidin, licochalcone A) against planktonic and biofilm-embedded E. faecalis cells. The biocompatibility and anti-inflammatory properties of the nisin/licorice polyphenol combinations were also investigated. The lantibiotic bacteriocin (nisin), the two isoflavonoids (glabridin, licoricidin), and the chalcone (licochalcone A) efficiently inhibited the growth of E. faecalis, with MICs ranging from 6.25 to 25 µg/mL. Combining nisin with each licorice polyphenol individually resulted in a significant synergistic antibacterial effect. Following a 30-min contact, nisin in combination with either glabridin, licoricidin, or licochalcone A caused significant biofilm killing. The nisin/licorice polyphenol combinations had no cytotoxic effects (oral epithelial cells, gingival fibroblasts, and stem cells of the apical papilla), with the exception of nisin/glabridin, when used at their MICs. Lastly, we showed that nisin/glabridin, nisin/licoricidin, and nisin/licochalcone A inhibit NF-κB activation induced by E. faecalis in a monocyte model, suggesting that these combinations possess anti-inflammatory properties. The present study provides evidence that combinations of nisin and glabridin, licoricidin, or licochalcone A show promise as root canal disinfection agents.
Collapse
|
32
|
Kukreti H, Li FC, Singh K, Sodhi R, Kishen A. Efficacy of bioactive nanoparticles on tissue-endotoxin induced suppression of stem cell viability, migration and differentiation. Int Endod J 2020; 53:859-870. [PMID: 32068891 DOI: 10.1111/iej.13283] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 02/15/2020] [Accepted: 02/17/2020] [Indexed: 12/22/2022]
Abstract
AIM To characterize a lipopolysaccharide (LPS)-treated dentine tissue model (LPS dentine) to analyse the efficacy of polycationic chitosan nanoparticles (CSnp) and/or dexamethasone conjugate chitosan nanoparticles (Dex-CSnp) on the viability/differentiation potential of stem cells from apical papilla (SCAP) when exposed to LPS dentine. A further aim was to understand the effect of macrophage-dependent inflammation on SCAP migration in the presence of LPS dentine. METHODOLOGY A total of 88 dentine slabs were used. TOF-SIMS analysis was performed amongst the LPS-treated and untreated dentine groups (n = 2/group). The study was conducted using four dentine groups: no treatment (control); LPS treatment only; LPS treatment followed by CSnp conditioning; and LPS treatment followed by Dex-CSnp conditioning groups. SCAP adherence, viability, differentiation and biomineralization potential on dentine from different groups were studied using fluorescent and scanning electron microscopy. Inflammation by macrophages in response to LPS dentine was quantified, and effect on SCAP migration was analysed. Statistical analysis was performed using Student's t-test with a significance level of P < 0.05. RESULT TOF-SIMS analysis confirmed LPS contamination. LPS dentine affected SCAP viability but not adherence to dentine (P < 0.001). Conditioning of LPS dentine with either nanoparticles improved SCAP viability (P < 0.01) and rescued other LPS related adverse effects on SCAPs, such as F-actin disruption, decrease in differentiation/biomineralization potential. IL-6 produced by macrophages in response to LPS-treated dentine impeded SCAP migration (P < 0.001), diminished on CSnp and Dex-CSnp conditioning groups (P < 0.01). CONCLUSION This study developed an LPS-dentine model and highlighted the ability of CSnp and Dex-CSnp to promote stem cell viability, migration, differentiation potential and reduce inflammation, providing an environment conducive for tissue regeneration/repair.
Collapse
Affiliation(s)
- H Kukreti
- Faculty of Dentistry, Dental Research Institute, University of Toronto, Toronto, Ontario, Canada
| | - F-C Li
- Faculty of Dentistry, Dental Research Institute, University of Toronto, Toronto, Ontario, Canada
| | - K Singh
- Faculty of Dentistry, Dental Research Institute, University of Toronto, Toronto, Ontario, Canada
| | - R Sodhi
- Ontario Centre for the Characterization of Advanced Materials (OCCAM), Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada
| | - A Kishen
- Faculty of Dentistry, Dental Research Institute, University of Toronto, Toronto, Ontario, Canada
| |
Collapse
|
33
|
Sanz JL, Forner L, Almudéver A, Guerrero-Gironés J, Llena C. Viability and Stimulation of Human Stem Cells from the Apical Papilla (hSCAPs) Induced by Silicate-Based Materials for Their Potential Use in Regenerative Endodontics: A Systematic Review. MATERIALS 2020; 13:ma13040974. [PMID: 32098171 PMCID: PMC7078727 DOI: 10.3390/ma13040974] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/13/2020] [Accepted: 02/20/2020] [Indexed: 12/12/2022]
Abstract
Blood clot formation in the apical third of the root canal system has been shown to promote further root development and reinforcement of dentinal walls by the deposition of mineralized tissue, resulting in an advancement from traditional apexification procedures to a regenerative endodontic treatment (RET) for non-vital immature permanent teeth. Silicate-based hydraulic biomaterials, categorized as bioactive endodontic cements, emerged as bright candidates for their use in RET as coronal barriers, sealing the previously induced blood clot scaffold. Human stem cells from the apical papilla (hSCAPs) surviving the infection may induce or at least be partially responsible for the regeneration or repair shown in RET. The aim of this study is to present a qualitative synthesis of available literature consisting of in vitro assays which analyzed the viability and stimulation of hSCAPs induced by silicate-based hydraulic biomaterials. A systematic electronic search was carried out in Medline, Scopus, Embase, Web of Science, Cochrane and SciELO databases, followed by a study selection, data extraction, and quality assessment following the PRISMA protocol. In vitro studies assessing the viability, proliferation, and/or differentiation of hSCAPs as well as their mineralization potential and/or osteogenic, odontogenic, cementogenic and/or angiogenic marker expression in contact with commercially available silicate-based materials were included in the present review. The search identified 73 preliminary references, of which 10 resulted to be eligible for qualitative synthesis. The modal materials studied were ProRoot MTA and Biodentine. Both bioceramic materials showed significant positive results when compared to a control for hSCAP cell viability, migration, and proliferation assays; a significant up-regulation of hSCAP odontogenic/osteogenic marker (ALP, DSPP, BSP, Runx2, OCN, OSX), angiogenic growth factor (VEGFA, FIGF) and pro-inflammatory cytokine (IL-1α, IL-1β, IL-6, TNF-α) expression; and a significant increase in hSCAP mineralized nodule formation assessed by Alizarin Red staining. Commercially available silicate-based materials considered in the present review can potentially induce mineralization and odontogenic/osteogenic differentiation of hSCAPs, thus prompting their use in regenerative endodontic procedures.
Collapse
Affiliation(s)
- José Luis Sanz
- Dental Pathology and Therapeutics Unit, Department of Stomatology, Universitat de València, 46010 Valencia, Spain; (J.L.S.); (A.A.); (C.L.)
| | - Leopoldo Forner
- Dental Pathology and Therapeutics Unit, Department of Stomatology, Universitat de València, 46010 Valencia, Spain; (J.L.S.); (A.A.); (C.L.)
- Correspondence: ; Tel.: +34-96386-4175
| | - Alicia Almudéver
- Dental Pathology and Therapeutics Unit, Department of Stomatology, Universitat de València, 46010 Valencia, Spain; (J.L.S.); (A.A.); (C.L.)
| | - Julia Guerrero-Gironés
- Special Care and Gerodontology Unit, Department of Stomatology, University of Murcia, 30100 Murcia, Spain;
| | - Carmen Llena
- Dental Pathology and Therapeutics Unit, Department of Stomatology, Universitat de València, 46010 Valencia, Spain; (J.L.S.); (A.A.); (C.L.)
| |
Collapse
|
34
|
Deng J, Pan J, Han X, Yu L, Chen J, Zhang W, Zhu L, Huang W, Liu S, You Z, Liu Y. PDGFBB-modified stem cells from apical papilla and thermosensitive hydrogel scaffolds induced bone regeneration. Chem Biol Interact 2019; 316:108931. [PMID: 31874163 DOI: 10.1016/j.cbi.2019.108931] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 11/30/2019] [Accepted: 12/17/2019] [Indexed: 12/17/2022]
Abstract
Bone defects caused by cancer surgery or trauma have a strong negative impact on human health. Treatment with cell and material-based complexes provides an alternative strategy for the regeneration of damaged bone tissue. The good physical properties and suitable biodegradability of a thermosensitive hydrogel has been shown to act as a valuable scaffold. Platelet derived growth factor BB (PDGFBB) is mainly secreted by platelets and promotes the migration and angiogenesis of mesenchymal stem cells (MSCs). Although PDGFBB is known to indirectly enhance bone repair in vivo, the effects of PDGFBB on stem cells from apical papilla (SCAPs) require further investigation. In our study, the proliferation of cells was investigated by the cell counting kit-8 and live/dead staining methods. The results indicated that PDGFBB promoted the proliferation of SCAPs. Real-time polymerase chain reaction and Western blot experiments were used to detect osteogenic genes and proteins. Moreover, calvarial defects were created in Sprague-Dawley rats and different complexes implanted. The results shown by micro-CT and hematoxylin and eosin analysis demonstrated that the hydrogel combined with lentiviral supernatant-green fluorescent protein-PDGFBB significantly improved new bone formation and mineralization compared with the other three groups. In summary, our research showed that a thermosensitive hydrogel can be used as a scaffold for 3D cell culture, and PDGFBB gene-modified SCAPs can improve bone formation in calvarial defects.
Collapse
Affiliation(s)
- Jiajia Deng
- Department of Orthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, PR China; Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, PR China
| | - Jie Pan
- Department of Orthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, PR China; Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, PR China
| | - Xinxin Han
- Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, PR China
| | - Liming Yu
- Department of Orthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, PR China; Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, PR China
| | - Jing Chen
- Department of Orthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, PR China; Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, PR China
| | - Weihua Zhang
- Department of Orthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, PR China; Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, PR China
| | - Luying Zhu
- Xiangya School of Stomatology, Xiangya Stomatology Hospital, Central South University, Changsha, China
| | - Wei Huang
- Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, PR China
| | - Shangfeng Liu
- Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, PR China
| | - Zhengwei You
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Belt and Road Joint Laboratory of Advanced Fiber and Low-dimension Materials, Donghua University, Shanghai, 201620, China
| | - Yuehua Liu
- Department of Orthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, PR China; Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, PR China.
| |
Collapse
|
35
|
Ha M, Athirasala A, Tahayeri A, Menezes PP, Bertassoni LE. Micropatterned hydrogels and cell alignment enhance the odontogenic potential of stem cells from apical papilla in-vitro. Dent Mater 2019; 36:88-96. [PMID: 31780101 DOI: 10.1016/j.dental.2019.10.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 10/04/2019] [Accepted: 10/24/2019] [Indexed: 12/22/2022]
Abstract
INTRODUCTION An understanding of the extracellular matrix characteristics which stimulate and guide stem cell differentiation in the dental pulp is fundamental for the development of enhanced dental regenerative therapies. Our objectives, in this study, were to determine whether stem cells from the apical papilla (SCAP) responded to substrate stiffness, whether hydrogels providing micropatterned topographical cues stimulate SCAP self-alignment, and whether the resulting alignment could influence their differentiation towards an odontogenic lineage in-vitro. METHODS Experiments utilized gelatin methacryloyl (GelMA) hydrogels of increasing concentrations (5, 10 and 15%). We determined their compressive modulus via unconfined compression and analyzed cell spreading via F-actin/DAPI immunostaining. GelMA hydrogels were micropatterned using photolithography, in order to generate microgrooves and ridges of 60 and 120μm, onto which SCAP were seeded and analyzed for self-alignment via fluorescence microscopy. Lastly, we analyzed the odontogenic differentiation of SCAP using alkaline phosphatase protein expression (ANOVA/Tukey α=0.05). RESULTS SCAP appeared to proliferate better on stiffer hydrogels. Both 60 and 120μm micropatterned hydrogels guided the self-alignment of SCAP with no significant difference between them. Similarly, both 60 and 120μm micropattern aligned cells promoted higher odontogenic differentiation than non-patterned controls. SIGNIFICANCE In summary, both substrate mechanics and geometry have a statistically significant influence on SCAP response, and may assist in the odontogenic differentiation of dental stem cells. These results may point toward the fabrication of cell-guiding scaffolds for regenerative endodontics, and may provide cues regarding the development of the pulp-dentin interface during tooth formation.
Collapse
Affiliation(s)
- Michael Ha
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, School of Dentistry, Oregon Health and Science University, Portland, OR, USA
| | - Avathamsa Athirasala
- Department of Biomedical Engineering, Oregon Health and Science University, Portland, OR, USA
| | - Anthony Tahayeri
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, School of Dentistry, Oregon Health and Science University, Portland, OR, USA
| | - Paula P Menezes
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, School of Dentistry, Oregon Health and Science University, Portland, OR, USA; Postgraduate Program in Health Sciences, Department of Pharmacy, Federal University of Sergipe, Aracaju, SE, Brazil
| | - Luiz E Bertassoni
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, School of Dentistry, Oregon Health and Science University, Portland, OR, USA; Department of Biomedical Engineering, Oregon Health and Science University, Portland, OR, USA; Center for Regenerative Medicine, Oregon Health and Science University, Portland, OR, USA; Cancer Early Detection Advanced Research, Knight Cancer Institute, Portland, OR, USA.
| |
Collapse
|
36
|
Bakhtiar H, Pezeshki-Modaress M, Kiaipour Z, Shafiee M, Ellini MR, Mazidi A, Rajabi S, Zamanlui Benisi S, Ostad SN, Galler K, Pakshir P, Azarpazhooh A, Kishen A. Pulp ECM-derived macroporous scaffolds for stimulation of dental-pulp regeneration process. Dent Mater 2019; 36:76-87. [PMID: 31735424 DOI: 10.1016/j.dental.2019.10.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 10/18/2019] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Recent studies suggest xenogeneic extracellular matrices as potential regenerative tools in dental pulp regeneration. This study aimed to fabricate and characterize a novel three-dimensional macroporous pulp-derived scaffold that enables the attachment, penetration, proliferation and differentiation of mesenchymal stem cells. METHOD Bovine pulp was decellularized and characterized with histological and DNA content methods. This scaffold was prepared using finely milled lyophilized decellularized pulp extracellular matrix (ECM) digested with pepsin. Three different concentrations of ECM (1.50, 2.25 and 3.00mg/ml) were freeze-dried and were tested with/without chemical crosslinking. The specimens were subjected to physicochemical characterization, cell viability and quantitative real time polymerase chain reaction assessments with human bone marrow mesenchymal stem cells (hBMMSCs). All scaffolds were subcutaneously implanted in rats for two weeks and histological and immunostaining analyses were performed. RESULTS Histological and DNA analysis confirmed complete decellularization. All samples demonstrated more than 97% porosity and 1.50mg/ml scaffold demonstrated highest water absorption. The highest cell viability and proliferation of hBMMSCs was observed on the 3.00mg/ml crosslinked scaffolds. The gene expression analysis showed a significant increase of dmp-1 and collagen-I on 3.00mg/ml crosslinked scaffolds compared to the other scaffolds. Histological examination of subcutaneous implanted scaffolds revealed low immunological response, and enhanced angiogenesis in cross-linked samples compared to non-crosslinked samples. SIGNIFICANCE The three-dimensional macroporous pulp-derived injectable scaffold developed and characterized in this study displayed potential for regenerative therapy. While the scaffold biodegradability was decreased by crosslinking, the biocompatibility of post-crosslinked scaffold was significantly improved.
Collapse
Affiliation(s)
- Hengameh Bakhtiar
- Department of Endodontics, Faculty of Dentistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada; Stem Cell Research Center, Tissue Engineering and Regenerative Medicine Institute, Tehran Central Branch, Islamic Azad University, Tehran, Iran
| | | | - Zahra Kiaipour
- Stem Cell Research Center, Tissue Engineering and Regenerative Medicine Institute, Tehran Central Branch, Islamic Azad University, Tehran, Iran
| | - Mahdieh Shafiee
- Stem Cell Research Center, Tissue Engineering and Regenerative Medicine Institute, Tehran Central Branch, Islamic Azad University, Tehran, Iran
| | - Mohammad Reza Ellini
- Stem Cell Research Center, Tissue Engineering and Regenerative Medicine Institute, Tehran Central Branch, Islamic Azad University, Tehran, Iran
| | - Amir Mazidi
- Stem Cell Research Center, Tissue Engineering and Regenerative Medicine Institute, Tehran Central Branch, Islamic Azad University, Tehran, Iran
| | - Sarah Rajabi
- Department of Cell Engineering, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Soheila Zamanlui Benisi
- Stem Cell Research Center, Tissue Engineering and Regenerative Medicine Institute, Tehran Central Branch, Islamic Azad University, Tehran, Iran
| | - Seyed Naser Ostad
- Department of Toxicology-Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Kerstin Galler
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, Regensburg, Germany
| | - Pardis Pakshir
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Amir Azarpazhooh
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada; Clinical Epidemiology and Health Care Research, Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada; Department of Dentistry, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Anil Kishen
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada; Department of Dentistry, Mount Sinai Hospital, Toronto, Ontario, Canada.
| |
Collapse
|
37
|
Tatic N, Rose FRAJ, des Rieux A, White LJ. Stem cells from the dental apical papilla in extracellular matrix hydrogels mitigate inflammation of microglial cells. Sci Rep 2019; 9:14015. [PMID: 31570730 PMCID: PMC6768850 DOI: 10.1038/s41598-019-50367-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 09/06/2019] [Indexed: 12/15/2022] Open
Abstract
After spinal cord injury (SCI) chronic inflammation hampers regeneration. Influencing the local microenvironment after SCI may provide a strategy to modulate inflammation and the immune response. The objectives of this work were to determine whether bone or spinal cord derived ECM hydrogels can deliver human mesenchymal stem cells from the apical papilla (SCAP) to reduce local inflammation and provide a regenerative microenvironment. Bone hydrogels (8 and 10 mg/ml, B8 and B10) and spinal cord hydrogels (8 mg/ml, S8) supplemented with fibrin possessed a gelation rate and a storage modulus compatible with spinal cord implantation. S8 and B8 impact on the expression of anti and pro-inflammatory cytokines (Arg1, Nos2, Tnf) in LPS treated microglial cells were assessed using solubilised and solid hydrogel forms. S8 significantly reduced the Nos2/Arg1 ratio and solubilised B8 significantly reduced Tnf and increased Arg1 whereas solid S8 and B8 did not impact inflammation in microglial cells. SCAP incorporation within ECM hydrogels did not impact upon SCAP immunoregulatory properties, with significant downregulation of Nos2/Arg1 ratio observed for all SCAP embedded hydrogels. Tnf expression was reduced with SCAP embedded in B8, reflecting the gene expression observed with the innate hydrogel. Thus, ECM hydrogels are suitable vehicles to deliver SCAP due to their physical properties, preservation of SCAP viability and immunomodulatory capacity.
Collapse
Affiliation(s)
- Natalija Tatic
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, United Kingdom
- Université catholique de Louvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Brussels, 1200, Belgium
| | - Felicity R A J Rose
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, United Kingdom
| | - Anne des Rieux
- Université catholique de Louvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Brussels, 1200, Belgium
| | - Lisa J White
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, United Kingdom.
| |
Collapse
|
38
|
Zhou C, Zhang D, Zou J, Li X, Zou S, Xie J. Substrate Compliance Directs the Osteogenic Lineages of Stem Cells from the Human Apical Papilla via the Processes of Mechanosensing and Mechanotransduction. ACS APPLIED MATERIALS & INTERFACES 2019; 11:26448-26459. [PMID: 31251564 DOI: 10.1021/acsami.9b07147] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Chenchen Zhou
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610064, China
| | - Demao Zhang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610064, China
| | - Jing Zou
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610064, China
| | - Xiaobing Li
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610064, China
| | - Shujuan Zou
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610064, China
| | - Jing Xie
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610064, China
| |
Collapse
|
39
|
Estrela C, Carmo Souza PO, Barbosa MG, Aburad de Carvalhosa A, Batista AC, Pinto Júnior DDS, Yamamoto-Silva FP, de Freitas Silva BS. Mesenchymal Stem Cell Marker Expression in Periapical Abscess. J Endod 2019; 45:716-723. [DOI: 10.1016/j.joen.2019.03.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 02/27/2019] [Accepted: 03/16/2019] [Indexed: 12/31/2022]
|
40
|
Temporal-controlled bioactive molecules releasing core-shell nano-system for tissue engineering strategies in endodontics. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2019; 18:11-20. [PMID: 30844574 DOI: 10.1016/j.nano.2019.02.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 02/09/2019] [Accepted: 02/13/2019] [Indexed: 01/09/2023]
Abstract
Temporal-controlled release of bioactive molecules is of key importance in the clinical translation of tissue engineering techniques. We engineered a core-shell nano-system (TD-NS) that sequentially released transforming growth factor-β1 (TGF-β1), a chemotactic/proliferating growth factor and dexamethasone (Dex), an osteo/odontogenic agent in a temporal-controlled manner. In stage-1, there was a rapid release of TGF-β1, reaching a concentration of 2 ng/mL of TGF-β1 in 7 days to 14 days, which tapers subsequently. In stage-2, Dex was released linearly from 9 days to 28 days. The TD-NS group showed a significantly higher (P < 0.05) osteo/odontogenic differentiation compared to the control and free TGF-β1 group (Free-TD) that was further corroborated with animal models/histochemical examination. The findings from this study highlighted the potential of temporal-controlled delivery of TGF-β1 and Dex from a single nano-carrier to direct spatial and temporal-control for a cell-free tissue engineering strategy in the treatment of apical periodontitis.
Collapse
|
41
|
Stem Cells from the Apical Papilla: A Promising Source for Stem Cell-Based Therapy. BIOMED RESEARCH INTERNATIONAL 2019; 2019:6104738. [PMID: 30834270 PMCID: PMC6374798 DOI: 10.1155/2019/6104738] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 01/15/2019] [Indexed: 12/17/2022]
Abstract
Stem cells are biological cells that can self-renew and can differentiate into multiple cell lineages. Stem cell-based therapy is emerging as a promising alternative therapeutic option for various disorders. Mesenchymal stem cells (MSCs) are multipotent adult stem cells that are isolated from various tissues and can be used as an alternative to embryonic stem cells. Stem cells from the apical papilla (SCAPs) are a novel population of MSCs residing in the apical papilla of immature permanent teeth. SCAPs present the characteristics of expression of MSCs markers, self-renewal, proliferation, migration, differentiation, and immunosuppression, which support the application of SCAPs in stem cell-based therapy, including the immunotherapy and the regeneration of dental tissues, bone, neural, and vascular tissues. In view of these properties and therapeutic potential, SCAPs can be considered as promising candidates for stem cell-based therapy. Thus the aim of our review was to summarize the current knowledge of SCAPs considering isolation, characterization, and multilineage differentiation. The prospects for their use in stem cell-based therapy were also discussed.
Collapse
|
42
|
De Berdt P, Bottemanne P, Bianco J, Alhouayek M, Diogenes A, Lloyd A, Llyod A, Gerardo-Nava J, Brook GA, Miron V, Muccioli GG, Rieux AD. Stem cells from human apical papilla decrease neuro-inflammation and stimulate oligodendrocyte progenitor differentiation via activin-A secretion. Cell Mol Life Sci 2018; 75:2843-2856. [PMID: 29417177 PMCID: PMC11105403 DOI: 10.1007/s00018-018-2764-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Revised: 01/08/2018] [Accepted: 01/29/2018] [Indexed: 02/06/2023]
Abstract
Secondary damage following spinal cord injury leads to non-reversible lesions and hampering of the reparative process. The local production of pro-inflammatory cytokines such as TNF-α can exacerbate these events. Oligodendrocyte death also occurs, followed by progressive demyelination leading to significant tissue degeneration. Dental stem cells from human apical papilla (SCAP) can be easily obtained at the removal of an adult immature tooth. This offers a minimally invasive approach to re-use this tissue as a source of stem cells, as compared to biopsying neural tissue from a patient with a spinal cord injury. We assessed the potential of SCAP to exert neuroprotective effects by investigating two possible modes of action: modulation of neuro-inflammation and oligodendrocyte progenitor cell (OPC) differentiation. SCAP were co-cultured with LPS-activated microglia, LPS-activated rat spinal cord organotypic sections (SCOS), and LPS-activated co-cultures of SCOS and spinal cord adult OPC. We showed for the first time that SCAP can induce a reduction of TNF-α expression and secretion in inflamed spinal cord tissues and can stimulate OPC differentiation via activin-A secretion. This work underlines the potential therapeutic benefits of SCAP for spinal cord injury repair.
Collapse
Affiliation(s)
- Pauline De Berdt
- Louvain Drug Research Institute (LDRI), Advanced Drug Delivery and Biomaterials (ADDB), Université Catholique de Louvain, Avenue E. Mounier 73, B1 73.12, 1200, Brussels, Belgium
| | - Pauline Bottemanne
- Louvain Drug Research Institute, Bioanalysis and Pharmacology of Bioactive Lipids Research Group (BPBL), Université Catholique de Louvain, Avenue E. Mounier 73, B1 72.01, 1200, Brussels, Belgium
| | - John Bianco
- Louvain Drug Research Institute (LDRI), Advanced Drug Delivery and Biomaterials (ADDB), Université Catholique de Louvain, Avenue E. Mounier 73, B1 73.12, 1200, Brussels, Belgium
| | - Mireille Alhouayek
- Louvain Drug Research Institute, Bioanalysis and Pharmacology of Bioactive Lipids Research Group (BPBL), Université Catholique de Louvain, Avenue E. Mounier 73, B1 72.01, 1200, Brussels, Belgium
| | - Anibal Diogenes
- Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | | | - Amy Llyod
- MRC Center for Reproductive Health, The Queen's Medical Research Institute, The University of Edinburgh, Edinburgh, UK
| | - Jose Gerardo-Nava
- Institute of Neuropathology, Uniklinik RWTH Aachen, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Gary A Brook
- Institute of Neuropathology, Uniklinik RWTH Aachen, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Véronique Miron
- MRC Center for Reproductive Health, The Queen's Medical Research Institute, The University of Edinburgh, Edinburgh, UK
| | - Giulio G Muccioli
- Louvain Drug Research Institute, Bioanalysis and Pharmacology of Bioactive Lipids Research Group (BPBL), Université Catholique de Louvain, Avenue E. Mounier 73, B1 72.01, 1200, Brussels, Belgium
| | - Anne des Rieux
- Louvain Drug Research Institute (LDRI), Advanced Drug Delivery and Biomaterials (ADDB), Université Catholique de Louvain, Avenue E. Mounier 73, B1 73.12, 1200, Brussels, Belgium.
| |
Collapse
|
43
|
Diogenes A, Hargreaves KM. Microbial Modulation of Stem Cells and Future Directions in Regenerative Endodontics. J Endod 2018; 43:S95-S101. [PMID: 28844309 DOI: 10.1016/j.joen.2017.07.012] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Regenerative endodontic procedures (REPs) have been shown to promote the resolution of signs and symptoms of disease and increase survival compared with traditional treatment procedures. However, there is still variable predictability of continued root development and evidence that the tissues formed do not recapitulate the native pulp-dentin complex. There is growing evidence that the apical papilla is capable of surviving prolonged endodontic infection and apical periodontitis and that it represents a rich source of undifferentiated mesenchymal stem cells in REPs. The survival and proper differentiation of stem cells transferred into infected root canals are fraught with challenges. Residual antigens, such as lipopolysaccharides, have been shown to be present in dentin even after adequate chemomechanical debridement. These antigens have a profound effect on stem cell fate by modulating their proliferative capacity and postdifferentiation phenotype. Thus, root canals must be detoxified in addition to disinfection. There is a strong need for translational studies that incorporate all aspects of tissue engineering in endodontics in models that include an existing infection to promote further advancement of the field. This is particularly important to make REPs more predictable when treating immature teeth in young patients. Importantly, regenerative procedures could eventually promote tooth longevity in our aging population. Lessons learned from translational studies that best mimic the clinical challenges could be evaluated in pragmatic clinical trials to determine the effectiveness of these procedures to promote desirable patient-centered outcomes.
Collapse
Affiliation(s)
- Anibal Diogenes
- Department of Endodontics at University of Texas Health Science Center at San Antonio, San Antonio, Texas.
| | - Kenneth M Hargreaves
- Department of Endodontics at University of Texas Health Science Center at San Antonio, San Antonio, Texas
| |
Collapse
|
44
|
Li G, Han N, Zhang X, Yang H, Cao Y, Wang S, Fan Z. Local Injection of Allogeneic Stem Cells from Apical Papilla Enhanced Periodontal Tissue Regeneration in Minipig Model of Periodontitis. BIOMED RESEARCH INTERNATIONAL 2018; 2018:3960798. [PMID: 30112386 PMCID: PMC6077668 DOI: 10.1155/2018/3960798] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 06/03/2018] [Accepted: 06/21/2018] [Indexed: 12/14/2022]
Abstract
BACKGROUND Discovering suitable seeding cells and simple application technique will be beneficial for MSC-mediated treatment of periodontitis. Stem cells from apical papilla (SCAPs) might be the candidate seeding cell for the periodontal tissues regeneration based on their origin and characters. In this research, we investigated the effect of SCAPs on periodontal tissue regeneration in swine by local injection. METHODS We established experimental periodontitis model in miniature pigs and then treated them with SCAPs by local injection. Clinical assessments, computed tomography (CT) scanning, histologic examination, and quantitative measurements were used to evaluate the effect of periodontal tissues regeneration. RESULTS At 12 weeks after injection, clinical assessments showed that probing depth, gingival recession, and attachment loss values were 5.44±0.77 mm versus 7.33±1.0 mm (p<0.01), 2.33±0.33 mm versus 2.11±0.69 mm (p>0.05), and 7.78±0.84 mm versus 9.44±1.07 mm (p<0.01) in SCAPs group and 0.9% NaCl group, respectively. CT scan results showed a significant increase of 12.86 mm3 alveolar bone regeneration in SCAPs group compared with 0.9% NaCl group. In addition, histopathology results demonstrated remarkable regeneration in SCAPs group, whereas regeneration of periodontal tissue was hardly found in 0.9% NaCl group. CONCLUSION Local injection of SCAPs could effectively restore tissue defects brought about by periodontitis in the swine model. Thus, SCAPs, as an easily accessible dental-deriving stem cell, may serve as an alternative application for periodontitis treatment.
Collapse
Affiliation(s)
- Guoqing Li
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, No. 4 Tiantanxili, Dongcheng District, Beijing 100050, China
- Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing 100050, China
| | - Nannan Han
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, No. 4 Tiantanxili, Dongcheng District, Beijing 100050, China
- Department of Periodontology, Capital Medical University School of Stomatology, Beijing 100050, China
| | - Xiuli Zhang
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, No. 4 Tiantanxili, Dongcheng District, Beijing 100050, China
- Department of Periodontology, Capital Medical University School of Stomatology, Beijing 100050, China
| | - Haoqing Yang
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, No. 4 Tiantanxili, Dongcheng District, Beijing 100050, China
| | - Yangyang Cao
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, No. 4 Tiantanxili, Dongcheng District, Beijing 100050, China
| | - Songlin Wang
- Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing 100050, China
- Department of Biochemistry and Molecular Biology, Capital Medical University School of Basic Medical Sciences, No.10 Xitoutiao Youanmen, Fengtai District, Beijing 100069, China
| | - Zhipeng Fan
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, No. 4 Tiantanxili, Dongcheng District, Beijing 100050, China
| |
Collapse
|
45
|
Wongwatanasanti N, Jantarat J, Sritanaudomchai H, Hargreaves KM. Effect of Bioceramic Materials on Proliferation and Odontoblast Differentiation of Human Stem Cells from the Apical Papilla. J Endod 2018; 44:1270-1275. [PMID: 29935871 DOI: 10.1016/j.joen.2018.03.014] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 03/15/2018] [Accepted: 03/26/2018] [Indexed: 01/09/2023]
Abstract
INTRODUCTION In regenerative endodontic treatment (RET), practitioners favor the placement of bioceramics as sealing materials over blood clots. It is important to understand the interaction between sealing material and cells in the root canal. The purpose of this study was to compare the effectiveness of various bioceramic materials (ProRoot MTA [Dentsply, Tulsa, OK], Biodentine [Septodont, Saint-Maur-des-Fossés, France], and RetroMTA [BioMTA, Seoul, Korea]) as sealing materials in RET for the proliferation and differentiation of stem cells from the apical papilla (SCAPs). METHODS SCAPs were seeded at 20,000 cells/well and cultured with soluble agents of testing materials through a transwell culture plate. The proliferation of SCAPs was investigated using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay on days 1, 3, 7, and 14 of testing. Alizarin red staining and quantitative real-time polymerase chain reaction were used for SCAP differentiation at different time points (1, 7, 14, and 21 days). The odontoblast genes expressed are dentin matrix acidic phosphoprotein 1, dentin sialophosphoprotein, osteocalcin, and matrix extracellular phosphoglycoprotein, which were used in this study. The SCAPs were cultured in odonto/osteogenic induction medium and also contacted soluble agents from the testing materials. RESULTS All 3 tested biomaterials induced SCAP proliferation. The Biodentine, ProRootMTA, and RetroMTA groups showed significant SCAP proliferation on days 7 and 14 compared with the control. In regard to odontoblastic differentiation, only Biodentine showed positive alizarin red staining. The highest expressions of dentin matrix acidic phosphoprotein 1, dentin sialophosphoprotein, and matrix extracellular phosphoglycoprotein were found on day 21 in the Biodentine group. The expression of osteocalcin was found to be significant on day 7. CONCLUSIONS Biodentine, ProRootMTA, and RetroMTA can induce SCAP proliferation. Biodentine induced significant SCAP differentiation among the 3 materials.
Collapse
Affiliation(s)
- Ninnita Wongwatanasanti
- Department of Operative Dentistry and Endodontics, Faculty of Dentistry, Mahidol University, Bangkok, Thailand
| | - Jeeraphat Jantarat
- Department of Operative Dentistry and Endodontics, Faculty of Dentistry, Mahidol University, Bangkok, Thailand.
| | | | - Kenneth M Hargreaves
- Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, Texas
| |
Collapse
|
46
|
Collado-González M, Pecci-Lloret MR, Tomás-Catalá CJ, García-Bernal D, Oñate-Sánchez RE, Llena C, Forner L, Rosa V, Rodríguez-Lozano FJ. Thermo-setting glass ionomer cements promote variable biological responses of human dental pulp stem cells. Dent Mater 2018; 34:932-943. [PMID: 29650250 DOI: 10.1016/j.dental.2018.03.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 02/08/2018] [Accepted: 03/23/2018] [Indexed: 01/28/2023]
Abstract
OBJECTIVE To evaluate the in vitro cytotoxicity of Equia Forte (GC, Tokyo, Japan) and Ionostar Molar (Voco, Cuxhaven, Germany) on human dental pulp stem cells (hDPSCs). METHODS hDPSCs isolated from third molars were exposed to several dilutions of Equia Forte and Ionostar Molar eluates (1/1, 1/2 and 1/4). These eluates were obtained by storing material samples in respective cell culture medium for 24h (n=40). hDPSCs in basal growth culture medium were the control. Cell viability and cell migration assays were performed using the MTT and wound-healing assays, respectively. Also, induction of apoptosis and changes in cell phenotype were evaluated by flow cytometry. Changes in cell morphology were analysed by immunocytofluorescence staining. To evaluate cell attachment to the different materials, hDPSCs were directly seeded onto the material surfaces and analyzed by scanning electron microscopy (SEM). The chemical composition of the materials was determined by energy dispersive X-ray (EDX) and eluates were analyzed by inductively coupled plasma-mass spectrometry (ICP-MS). Statistical analysis was performed with analysis of variance (ANOVA) and Student's t-test (α<0.05). RESULTS Undiluted Equia Forte extracts led to a similar cell proliferation rates than the control group from 72h onwards. There were no significance differences between Equia Forte and Ionostar Molar in terms of cell apoptosis and phenotype. However, in presence of Equia extracts the migration capacity of hDPSCs was higher than in presence of Ionostar Molar (p<0.05). Also, SEM studies showed a higher degree of cell attachment when Equia Forte extracts were used. Finally, EDX analysis pointed to different weight percentages of C, O and Ca ions in glass ionomer cements, while other elements such as La, Al, Si, W, Mo and F were also detected. SIGNIFICANCE In summary, Equia Forte promoted better biological responses in hDPSCs than Ionostar Molar.
Collapse
Affiliation(s)
- Mar Collado-González
- Hematopoietic Transplant and Cellular Therapy Unit, Instituto Murciano de Investigación Biosanitaria-Arrixaca, Virgen de la Arrixaca University Hospital, University of Murcia, Murcia, Spain
| | | | - Christopher J Tomás-Catalá
- Hematopoietic Transplant and Cellular Therapy Unit, Instituto Murciano de Investigación Biosanitaria-Arrixaca, Virgen de la Arrixaca University Hospital, University of Murcia, Murcia, Spain; School of Dentistry, Faculty of Medicine, University of Murcia, Murcia, Spain
| | - David García-Bernal
- Hematopoietic Transplant and Cellular Therapy Unit, Instituto Murciano de Investigación Biosanitaria-Arrixaca, Virgen de la Arrixaca University Hospital, University of Murcia, Murcia, Spain
| | | | - Carmen Llena
- Department of Stomatology, University of Valencia, Valencia, Spain
| | - Leopoldo Forner
- Department of Stomatology, University of Valencia, Valencia, Spain
| | - Vinicius Rosa
- Faculty of Dentistry, National University of Singapore, Singapore, Singapore
| | - Francisco J Rodríguez-Lozano
- Hematopoietic Transplant and Cellular Therapy Unit, Instituto Murciano de Investigación Biosanitaria-Arrixaca, Virgen de la Arrixaca University Hospital, University of Murcia, Murcia, Spain; School of Dentistry, Faculty of Medicine, University of Murcia, Murcia, Spain.
| |
Collapse
|
47
|
Miller AA, Takimoto K, Wealleans J, Diogenes A. Effect of 3 Bioceramic Materials on Stem Cells of the Apical Papilla Proliferation and Differentiation Using a Dentin Disk Model. J Endod 2018; 44:599-603. [DOI: 10.1016/j.joen.2017.12.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 11/20/2017] [Accepted: 12/19/2017] [Indexed: 12/23/2022]
|
48
|
Scott MB, Zilinski GS, Kirkpatrick TC, Himel VT, Sabey KA, Lallier TE. The Effects of Irrigants on the Survival of Human Stem Cells of the Apical Papilla, Including Endocyn. J Endod 2018; 44:263-268. [DOI: 10.1016/j.joen.2017.09.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 09/01/2017] [Accepted: 09/01/2017] [Indexed: 12/24/2022]
|
49
|
Athirasala A, Tahayeri A, Thrivikraman G, França CM, Monteiro N, Tran V, Ferracane J, Bertassoni LE. A dentin-derived hydrogel bioink for 3D bioprinting of cell laden scaffolds for regenerative dentistry. Biofabrication 2018; 10:024101. [PMID: 29320372 DOI: 10.1088/1758-5090/aa9b4e] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Recent studies in tissue engineering have adopted extracellular matrix (ECM) derived scaffolds as natural and cytocompatible microenvironments for tissue regeneration. The dentin matrix, specifically, has been shown to be associated with a host of soluble and insoluble signaling molecules that can promote odontogenesis. Here, we have developed a novel bioink, blending printable alginate (3% w/v) hydrogels with the soluble and insoluble fractions of the dentin matrix. We have optimized the printing parameters and the concentrations of the individual components of the bioink for print accuracy, cell viability and odontogenic potential. We find that, while viscosity, and hence printability of the bioinks, was greater in the formulations containing higher concentrations of alginate, a higher proportion of insoluble dentin matrix proteins significantly improved cell viability; where a 1:1 ratio of alginate and dentin (1:1 Alg-Dent) was most suitable. We further demonstrate high retention of the soluble dentin molecules within the 1:1 Alg-Dent hydrogel blends, evidencing renewed interactions between these molecules and the dentin matrix post crosslinking. Moreover, at concentrations of 100 μg ml-1, these soluble dentin molecules significantly enhanced odontogenic differentiation of stem cells from the apical papilla encapsulated in bioprinted hydrogels. In summary, the proposed novel bioinks have demonstrable cytocompatibility and natural odontogenic capacity, which can be a used to reproducibly fabricate scaffolds with complex three-dimensional microarchitectures for regenerative dentistry in the future.
Collapse
Affiliation(s)
- Avathamsa Athirasala
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, OHSU School of Dentistry, Portland, OR, United States of America
| | | | | | | | | | | | | | | |
Collapse
|
50
|
Xuedong Z, Dingming H, Jianguo L, Zhengwei H, Xin W, Deqin Y, Jin Z, Liming C, Lin Z, Yanhong L, Jiyao L. [Vital pulp therapy of damaged dental pulp]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2017; 35:339-347. [PMID: 28853497 DOI: 10.7518/hxkq.2017.04.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The development of an expert consensus on vital pulp therapy can provide practical guidance for the improvement of pulp damage care in China. Dental pulp disease is a major type of illness that adversely affects human oral health. Pulp capping and pulpotomy are currently the main methods for vital pulp therapy. Along with the development of minimal invasion cosmetic dentistry, using different treatment technologies and materials reasonably, preserving healthy tooth tissue, and extending tooth save time have become urgent problems that call for immediate solution in dental clinics. This paper summarizes the experiences and knowledge of endodontic experts. We develop a clinical path of vital pulp therapy for clinical work by utilizing the nature, approach, and degree of pulp damage as references, defense and self-repairing ability of pulp as guidance, and modern technologies of diagnosis and treatment as means.
Collapse
Affiliation(s)
- Zhou Xuedong
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Dept. of Conservative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Huang Dingming
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Dept. of Conservative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Liu Jianguo
- Dept. of Conservative Dentistry and Endodontics, Stomatological Hospital Affiliated to Zunyi Medical College, Zunyi 563003, China
| | - Huang Zhengwei
- Dept. of Conservative Dentistry and Endodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Wei Xin
- Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, China
| | - Yang Deqin
- Dept. of Conservative Dentistry and Endodontics, Stomatological Hospital of Chongqing Medical University, Chongqing 401147, China
| | - Zhao Jin
- Dept. of Conservative Dentistry and Endodontics, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - Chen Liming
- Guiyang Hospital of Stomatology, Guiyang 550002, China
| | - Zhu Lin
- Tibet Branch of West China Hospital of Stomatology, Lasa 850000, China
| | - Li Yanhong
- Hospital of Stomatology, Kunming Medical University, Kunming 650199, China
| | - Li Jiyao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Dept. of Conservative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| |
Collapse
|