AimThis study aims to establish the isolation method of stem cells from pulp tissue of carious deciduous teeth.MethodsThe teeth were soaked in 1% povidone–iodine solution for about 1 min followed by washing in PBS with 1% antibiotic–antimycotic thrice. Dental pulp tissue was removed by extirpation, and then cultivated in the culture medium. Characterization of mesenchymal stem cell (MSC) was carried out using human MSC analysis kit with positive markers CD90, CD73, and CD105, but negative for expressions of CD45, CD34, CD11b, CD19, and HLA-DR. Differentiation capacity of stem cells from human exfoliated deciduous (SHED) was determined by staining with Alizarin S, Alcian Blue, and Oil Red O.ResultsThere is no contamination after 3 days of culture. SHED derived from dental pulp were expressions of 99.2% of positive marker and 0.3% of the negative marker. At passage 5, SHED was differentiated into osteocyte, chondrocyte, and adipocyte types of cells in the induction medium.ConclusionSHED derived from carious deciduous teeth can be used as a source of stem cell for regenerative medicine.
Objective: The aim of this study was to examine the role of NT-3 as a single neurotrophic factor in the expression of nestin in the neural differentiation of MSCs.
Methods: MSCs were isolated from rat bone marrow and induced with NT-3 at concentrations of 20, 25, and 30 ng/ml for 7 and 14 d (the control was no NT-3). Nestin underwent immunocytochemical analysis on days 7 and 14. Five high-power random fields were documented.
Results: A post-hoc analysis using LSD after one-way ANOVA test yielded a statistically significant difference in the percentage of nestin-positive cells in MSCs with NT-3 at concentrations of 20, 25, and 30 ng/ml for 7 d compared to the control group (p<0.05). The percentages of nestin-positive cells at concentrations of 20, 25, and 30 ng/ml, and in the control data on day 7 were 14.55±1.26%, 16.20±1.07%, 13.78±1.19%, and 9.81±0.79%, respectively. NT-3 at 25 ng/ml induced the highest MSCs neural differentiation on day 7 and remained constant until day 14.
Conclusion: NT-3 plays a role in the early stage of differentiating MSCs from rat bone marrow into neurons, with the optimal concentration being 25 ng/ml.
Objective: Rat embryonic fibroblasts (REFs) and rat bone marrow-derived mesenchymal stem cells (rat-BMMSCs) an be used as in vitro models for a variety of studies, including for degenerative diseases such as arterial ischemia, tissue engineering and development of induced pluripotent stem cells (iPSCs). Therefore, the further developments of the use of these two cells of great importance.
Methods: The experiments were performed with Wistar rat, those with 15-17 d gestation (aged 32 w) as a REFs source and those aged 12 w as a BMMSCs source. Dulbecco's modified eagle medium (DMEM) was used for both cell cultures but with different media supplements. Proliferation ability was determined for both by calculating population doubling time (PDT). Characterization was performed by differentiation testing into osteocyte, chondrocyte and adipocyte cells by staining with Alizarin Red, Alcian Blue and Oil Red O and by an investigation of specific antigen characteristics using flow cytometry with positive CD90 and CD29 and negative CD34 markers.
Results: Morphologically, the REFs and rat-BMMSCs had the same fibroblasts like shape. PDT was higher for the REFs than the BMMSCs (p<0.05), and both could differentiate into osteocytes, chondrocytes and adipocyte. The characteristics of the positive markers (CD29 and CD90) were higher in rat-BMMSCs than in REFs.
Conclusion: In this study demonstrated that the explant method for REFs isolation and flushing method for rat-BMMSC isolation are both effective. It also showed that rat-BMMSC grow faster than REFs, and that both cells have the same differentiation ability as rat-BMMSCs but with different specific surface antigen characteristics.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.