Abstract
The effects of Mn2+ on the proliferation, osteogenic and adipogenic differentiation of BMSCs were evaluated by employing MTT, ΔΨm, cell cycle, ALP activity, collagen production, ARS and oil red O stain assays. The results indicated that Mn2+ decreased the viability at most concentrations for 24 h, but the viability was increased with prolonging incubation time. Mn2+ at the concentrations of 1 × 10-7 and 1 × 10-6 mol/L decreased ΔΨm in the BMSCs for 48 h. Mn2+ induced G2/M phase cell cycle arrest at tested concentrations. On day 7 and 10, the effect of Mn2+ on the osteogenic differentiation depended on concentration, but it inhibited osteogenic differentiation at all tested concentrations for 14 d. The effect of Mn2+ on the synthesis of collagen of BMSCs depended on concentration for 7 d, but Mn2+ inhibited the synthesis of collagen at all tested concentrations for 10 d. On day 14, Mn2+ inhibited the formation of mineralized matrix nodules of BMSCs at all tested concentrations, the inhibitory effect turned to be weaker with prolonging incubation time. Mn2+ promoted the adipogenic differentiation of BMSCs at all tested concentrations for 10 d, but had no effect with prolonging incubation time. These findings suggested the effects of Mn2+ on the proliferation, osteogenic differentiation and adipogenic differentiation of BMSCs are very complicated, concentration and incubation time are key factors for switching the biological effects of Mn2+ from damage to protection.
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Abbreviations
- ALP:
-
Alkaline phosphatase
- ARS:
-
Alizarin red S
- BMSCs:
-
Bone marrow stromal cells
- BSP:
-
Bone sialo protein
- DMSO:
-
Dimethylsulfoxide
- MTT:
-
3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide
- DMEM:
-
Dulbecco’s modified eagle’s medium
- DLS:
-
Dynamic light scattering
- KM:
-
Kun ming
- ΔΨm:
-
Mitochondrial membrane potential
- NBS:
-
Neonatal bovine serum
- OD:
-
Optical density
- OBs:
-
Osteoblasts
- OS:
-
Osteogenic induction supplement
- PTH:
-
Parathyroid hormone
- PBS:
-
Phosphate buffer solution
- PI:
-
Propidium iodide
- Rh123:
-
Rhodamine 123
- SD:
-
Standard deviation
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (No. 20971034) and the Doctoral Program Foundation of Institutions of Higher Education of China (No. 20111301110004).
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Zhang, J., Zhang, Q., Li, S. et al. The Effects of Mn2+ on the Proliferation, Osteogenic Differentiation and Adipogenic Differentiation of Primary Mouse Bone Marrow Stromal Cells. Biol Trace Elem Res 151, 415–423 (2013). https://doi.org/10.1007/s12011-012-9581-8
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DOI: https://doi.org/10.1007/s12011-012-9581-8