Endocannabinoids Modulate Production of Osteoclastogenic Factors by Stem Cells of the Apical Papilla In Vitro

Meneses, Claudia Caroline Bosio; Diogenes, Aníbal; Sipert, Carla Renata

doi:10.1016/j.joen.2022.09.005

Cited by 2 publications

(1 citation statement)

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“…Tissue engineering requires three major components of a scaffold, morphogen growth factor (s), and mesenchymal stem cells for the regeneration of functional tissue or organ [ 4 , 7 ]. Apical papilla is a tissue that is located near the apex of the roots of immature teeth, acting as a source of stem cells that differentiate into the dentin-synthesizing odontoblasts, which play a significant role in root formation and regenerative endodontic treatments [ 8 ]. In dentistry, numerous potential sources of mesenchymal stem cells are available for tissue engineering.…”

Section: Introductionmentioning

confidence: 99%

Effect of copper oxide nanoparticles and light-emitting diode irradiation on the cell viability and osteogenic/odontogenic differentiation of human stem cells from the apical papilla

Karkehabadi¹,

Rahmati²,

Abbasi³

et al. 2023

BMC Oral Health

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Objectives This experimental study aimed to assess the effect of copper oxide nanoparticles (CuONPs) and light-emitting diode (LED) irradiation on the cell viability and osteogenic/odontogenic differentiation of human SCAPs. Methods After the culture of SCAPs, the effects of different concentrations of CuONPs on cell viability were evaluated by the methyl thiazolyl tetrazolium (MTT) assay after 24 and 48 h, and the optimal concentration was determined (n = 12). SCAPs were then divided into four groups based on the type of treatment: (I) no-treatment control group, (II) exposure to CuONPs, (III) LED irradiation (635 nm, 200 mW/cm2) for 30 s, and (IV) exposure to CuONPs combined with LED irradiation. CuONPs were synthesized by a green technique, which was based on reduction and simultaneous stability of copper ions by using the pomegranate peel extract. After treatments, the expression of osteogenic/odontogenic markers including dentin sialophosphoprotein (DSPP), bone sialoprotein (BSP), alkaline phosphatase (ALP), and dentin matrix acidic phosphoprotein 1 (DMP1) was evaluated in all four groups using quantitative real-time polymerase chain reaction (PCR) (n = 16). Also, osteogenic differentiation of SCAPs was evaluated qualitatively by alizarin red staining (ARS) to assess the matrix mineralization (n = 4). SPSS version 18 was used for data evaluation. The Kruskal–Wallis and Mann–Whitney tests were used to compare the groups. Results Exposure to 1 µg/mL CuONPs resulted in maximum viability of SCAPs. Concentrations of CuONPs over 10 µg/mL significantly decreased the viability of SCAPs. Real-time PCR showed that the expression of DMP1, BSP, ALP, and DSPP in CuONPs + LED and LED groups was significantly higher than that in CuONPs and control groups at both 24 and 48 h (P < 0.05). The density of ARS increased in all experimental groups after 24 h, and in CuONPs + LED and CuONPs groups after 48 h, compared to the control group. Conclusion Addition of CuONPs and LED irradiation of SCAPs in the culture medium significantly enhanced their osteogenic/odontogenic differentiation.

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Section: Introductionmentioning

confidence: 99%