Shanghai Journal of Stomatology ›› 2015, Vol. 24 ›› Issue (4): 390-394.

• Basic study • Previous Articles     Next Articles

The effect of rhAm and EMPs on promoting differentiation of hBMSCs into osteoblasts

LIN Zhi-kai1, 2, SHU Rong1, 2, SONG Zhong-chen1, 2, CHENG Lan1, 2, DONG Jia-chen1, 2, ZHANG Xiu-li2   

  1. 1.Department of Periodontology,Shanghai Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine. Shanghai 200011; 2.Shanghai Research Institute of Stomatology, Shanghai Key Lab of Stomatology. Shanghai 200011, China
  • Received:2014-08-12 Online:2015-08-20 Published:2015-09-10
  • Supported by:
    Supported by National Natural Science Foundation of China(81070838,81271156) and Biomedical Engineering Cross Research Foundation of Shanghai Jiao Tong University(YG2011MS31)

Abstract: PURPOSE: To compare the effect of recombinant full-length human amelogenin (rhAm) and enamel matrix proteins (EMPs) on differentiation of human bone marrow stromal cells (hBMSCs) into osteoblasts. Meanwhile, to investigate the possible mechanism of rhAm promoting osteogenic differentiation of hBMSCs. METHODS: ThehBMSCs were cultured in vitro. The cells were treated with 10 μg/mL rhAm and 200 μg/mL EMPs. The gene and protein expression of Runx2, ALP, Col-I were observed by using RT-PCR and Western blot at different time points. The influence of rhAm and EMPs on mineralization and osteogenesis of hBMSCs were observed by using alkaline phosphatase and alizarin red staining methods. The data was analyzed with SPSS 13.0 software package. RESULTS: Both rhAm and EMPs significantly promoted gene and protein expression of Runx2, ALP and Col-I in hBMSCs. Meanwhile, rhAm and EMPs also facilitated osteogenesis and mineralization of hBMSCs. The effects of two proteins on hBMSCs had no significant difference. CONCLUSIONS: Both 10 μg/mL rhAm and 200 μg/mL EMPs can significantly promote differentiation of hBMSCs into osteoblasts. The rhAm may be used in inducing periodontal tissue regeneration in the future.

Key words: Periodontal regeneration, Amelogenin, Enamel matrix proteins, Bone marrow stromal cellsn Shanghai J Stomatol, 2015, 24(4):390-394.

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