Joseph Sabbagh1, Michella Ghassibe-Sabbagh2, Mohammad Fayyad-Kazan3, Fatima Al-Nemer4, Jean Claude Fahed5, Antoine Berberi6, Bassam Badran7. 1. Department of Restorative Dentistry and Endodontics, Faculty of Dental Medicine, Lebanese University, Beirut, Lebanon. Electronic address: josephsabbagh@ul.edu.lb. 2. Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, Lebanon. Electronic address: michella.sabbagh@lau.edu.lb. 3. Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, Lebanon; Laboratory of Cancer Biology and Molecular Immunology, Faculty of Sciences-I, Lebanese University, Hadath- Beirut, Lebanon. Electronic address: mfayyadk@gmail.com. 4. Laboratory of Cancer Biology and Molecular Immunology, Faculty of Sciences-I, Lebanese University, Hadath- Beirut, Lebanon. Electronic address: fatimanemer@hotmail.com. 5. Department of Restorative Dentistry and Endodontics, Faculty of Dental Medicine, Lebanese University, Beirut, Lebanon. Electronic address: jeanfahd@ul.edu.lb. 6. Department of Oral and Maxillofacial Surgery, Faculty of Dental Medicine, Lebanese University, Beirut, Lebanon. Electronic address: aberberi@ul.edu.lb. 7. Laboratory of Cancer Biology and Molecular Immunology, Faculty of Sciences-I, Lebanese University, Hadath- Beirut, Lebanon. Electronic address: bassam.badran@ul.edu.lb.
Abstract
OBJECTIVE: Dental pulp stem cells (DPSCs) and stem cells from human exfoliated deciduous teeth (SHED) are types of human dental tissue-derived mesenchymal stem cells (MSCs) that have emerged as an interesting and promising source of stem cells in the field of tissue engineering. The aim of this work is to isolate stem cells from DPSCs and SHED, cultivate them in vitro and compare their odontogenic differentiation potential. METHODS: DPSCs and SHED were extracted from molars, premolars and canines of six healthy subjects aged 5-29 years. The cells were characterized, using flow cytometry, for mesenchymal stem cell surface markers. MTT colorimetric assay was applied to assess cell viability. Alizarin red staining, alkaline phosphatase (ALP) activity, quantitative real-time PCR (qRT-PCR) and western blot were carried out to determine DPSCs and SHED osteogenic/odontogenic differentiation. RESULTS: DPSCs express higher STRO-1 and CD44 levels compared to SHED. Moreover, the cells differentiate and acquire columnar shape with a level of calcium deposition and mineralization that is the same between DPSCs and SHED. ALP activity, ALP, COLI, DMP-1, DSPP, OC, and RUNX2 (osteogenic/odontogenic differentiation markers) expression levels were higher in DPSCs. CONCLUSIONS: DPSCs and SHED express MSCs markers. Although both cell types had calcium deposits, DPSCs presented a higher ALP activity level. In addition, DPSCs showed higher levels of osteogenic and odontogenic differentiation markers such as COLI, DSPP, OC, RUNX2, and DMP-1. These results suggest that DPSCs are closer to the phenotype of odontoblasts than SHED and may improve the efficacy of human dental tissue-derived mesenchymal stem cells therapeutic protocols. 'CLINICAL SIGNIFICANCE': DPSCs are closer than t SHED to the phenotype of odontoblasts. This would be helpful to enable better therapeutic decisions when applying MSCs-based therapy in the field of dentistry.
OBJECTIVE: Dental pulp stem cells (DPSCs) and stem cells from human exfoliated deciduous teeth (SHED) are types of human dental tissue-derived mesenchymal stem cells (MSCs) that have emerged as an interesting and promising source of stem cells in the field of tissue engineering. The aim of this work is to isolate stem cells from DPSCs and SHED, cultivate them in vitro and compare their odontogenic differentiation potential. METHODS: DPSCs and SHED were extracted from molars, premolars and canines of six healthy subjects aged 5-29 years. The cells were characterized, using flow cytometry, for mesenchymal stem cell surface markers. MTT colorimetric assay was applied to assess cell viability. Alizarin red staining, alkaline phosphatase (ALP) activity, quantitative real-time PCR (qRT-PCR) and western blot were carried out to determine DPSCs and SHED osteogenic/odontogenic differentiation. RESULTS: DPSCs express higher STRO-1 and CD44 levels compared to SHED. Moreover, the cells differentiate and acquire columnar shape with a level of calcium deposition and mineralization that is the same between DPSCs and SHED. ALP activity, ALP, COLI, DMP-1, DSPP, OC, and RUNX2 (osteogenic/odontogenic differentiation markers) expression levels were higher in DPSCs. CONCLUSIONS: DPSCs and SHED express MSCs markers. Although both cell types had calcium deposits, DPSCs presented a higher ALP activity level. In addition, DPSCs showed higher levels of osteogenic and odontogenic differentiation markers such as COLI, DSPP, OC, RUNX2, and DMP-1. These results suggest that DPSCs are closer to the phenotype of odontoblasts than SHED and may improve the efficacy of human dental tissue-derived mesenchymal stem cells therapeutic protocols. 'CLINICAL SIGNIFICANCE': DPSCs are closer than t SHED to the phenotype of odontoblasts. This would be helpful to enable better therapeutic decisions when applying MSCs-based therapy in the field of dentistry.
Authors: Rui Mu; Bo Chen; Bo Bi; Hongchuan Yu; Juan Liu; Junxia Li; Maodian He; Liang Rong; Bingyao Liu; Ke Liu; Lei Zhu; Xiaolei Shi; Yi Shuai; Lei Jin Journal: Int J Med Sci Date: 2022-07-18 Impact factor: 3.642