Chinese Journal of Tissue Engineering Research ›› 2014, Vol. 18 ›› Issue (47): 7591-7596.doi: 10.3969/j.issn.2095-4344.2014.47.009

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Effect of phosphorus ions on human bone marrow mesenchymal stem cells under three-dimensional culture 

Lei Qun, Chen Jiang, Huang Wen-xiu, Wu Dong, Lin Dong   

  1. Department of Dental Implant, Stomatological Hospital of Fujian Medical University, Fuzhou 350000, Fujian Province, China
  • Revised:2014-10-18 Online:2014-11-19 Published:2014-11-19
  • Contact: Chen Jiang, M.D., Professor, Chief physician, Doctoral supervisor, Department of Dental Implant, Stomatological Hospital of Fujian Medical University, Fuzhou 350000, Fujian Province, China
  • About author:Lei Qun, M.D., Physician, Department of Dental Implant, Stomatological Hospital of Fujian Medical University, Fuzhou 350000, Fujian Province, China
  • Supported by:

    the Key Clinical Specialty Discipline Construction Program of Fujian Province, No. (2012)1589; Key Project of Fujian Provincial Department of Science and Technology, No. 2013Y0039

Abstract:

BACKGROUND: Previous researches have focused on the effect of phosphorus compounds on stem cells from animals or from human. But there is no study on the effect of phosphorus ions on human bone marrow mesenchymal stem cells under three-dimensional culture.
OBJECTIVE: To explore the effect of phosphorus ions on human bone marrow mesenchymal stem cells under three-dimensional culture.
METHODS: There were six groups in the experiment. Human bone marrow mesenchymal stem cells were inoculated in three-dimensional polystyrene scaffolds and then subjected to serum-free growth medium (group 3-GM) or serum-free growth medium containing 4 mmol/L (group 3-4P), 8 mmol/L (group 3-8P) phosphorus ions for 21 days, respectively. Cells cultured on the two-dimensional polystyrene scaffolds were used as control groups (groups 2-GM, 2-4P, 2-8P). Cellular proliferation was examined by cell counting kit-8; the mRNA expressions of osteogenic marker genes were assessed by RT-PCR; the formation of mineralized nodules for the osteogenic differentiation of human bone marrow mesenchymal stem cells was examined by Alizarin red staining.
RESULTS AND CONCLUSION: Compared with the two-dimensional culture, the growth of human bone marrow mesenchymal stem cells induced by phosphorus ions were more obvious in the three-dimensional polystyrenes scaffolds at days 4, 7, 14 and 21 (P < 0.05). Compared with the group 3-GM, the mRNA expression of collagen type I in groups 3-4P and 3-8P increased more significantly at days 7 and 14 (P < 0.05); the mRNA expression of alkaline phosphatase in groups 3-4P and 3-8P increased more significantly at day 14 (P < 0.05); the mRNA expression of osteocalcin in groups 3-4P and 3-8P increased more significantly at days 14 and 21 (P < 0.05). Mineralized nodules were formed in groups 3-4P and 3-8P but not in group 3-GM at day 21. So we concluded that phosphorus ions can promote proliferation and osteogenic differentiation of human bone marrow mesenchymal stem cells in three-dimensional polystyrenes scaffolds. Compared with the two-dimensional cell culture, the promoting growth effect of phosphorus ions on human bone marrow mesenchymal stem cells in three dimensional polystyrenes scaffolds are more obvious.


中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


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Key words: tissue engineering, phosphorus, stem cells

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