China Journal of Oral and Maxillofacial Surgery ›› 2021, Vol. 19 ›› Issue (3): 205-212.doi: 10.19438/j.cjoms.2021.03.004

• Original Articles • Previous Articles     Next Articles

Effects of small molecule biochanin A on osteogenic differentiation of human dental pulp stem cells

XIE Xin-ru1, RAN Xue-hui2, XU Wei-feng1, LIU Xiu-ming1, ZHANG Xiang-kai3, CAO Ling-yan3, ZHANG Shan-yong1   

  1. 1. Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology. Shanghai 200011;
    2. Shanghai Jiao Tong University School of Medicine. Shanghai 200011;
    3. Department of Oromaxillofacial Head and Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology. Shanghai 200011;
    4. Department of Prothodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Engineering Research Center of Advanced Dental Technology and Materials; Shanghai Key Laboratory of Stomatology. Shanghai 200011, China
  • Received:2020-11-27 Revised:2021-01-15 Published:2021-07-16

Abstract: PURPOSE: To study the effects of different concentrations of biochanin A (BCA) on osteogenic differentiation of human dental pulp stem cells (hDPSCs) and its related molecular mechanisms. METHODS: Primary human dental pulp stem cells were isolated and cultured by tissue explant method, cell phenotypes were identified by flow cytometry. Effects of different concentrations of BCA on proliferation of hDPSCs were detected by CCK-8 method, and effects of different concentrations of BCA on osteogenic differentiation of hDPSCs were analyzed by q-PCR, alkaline phosphatase (ALP) staining, and alizarin red staining. Finally, the influence of BCA on MAPK signaling pathway during osteogenic differentiation of hDPSCs was investigated through Western blot. SPSS 16.0 software package was used for statistical analysis of the data. RESULTS: hDPSCs obtained in the experiment were conformed to have the characteristics of mesenchymal stem cells by flow cytometry. CCK-8 results showed that BCA below 25 μmol/L had no effect on cell activity of hDPSCs, while over 30 μmol/L BCA inhibited the proliferation of hDPSCs. 10 μmol/L BCA significantly increased the expression of osteogenic-related genes ALP, COL-1, OPN and OCN. The staining of ALP and alizarin red was also more obvious than that of the control group and the other concentration groups. Western blot displayed that BCA activated P38/MAPK signaling pathway, but had no obvious effect on ERK and JNK pathway. CONCLUSIONS: Tissue explant method can obtain hDPSCs with higher purity. BCA may promote osteogenic differentiation of hDPSCs by activating P38/MAPK signaling pathway.

Key words: Biochanin A, Human dental pulp stem cells, Osteogenic differentiation, MAPK signaling pathway

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