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Chinese Journal of Geriatric Orthopaedics and Rehabilitation(Electronic Edition) ›› 2020, Vol. 06 ›› Issue (03): 123-127. doi: 10.3877/cma.j.issn.2096-0263.2020.03.001

Special Issue:

• Basic Research •     Next Articles

Effect of 3D printed collagen / hydroxyapatite scaffold on osteogenic differentiation of bone marrow mesenchymal stem cells

Bo Wu1(), Ye Liu2, Xu Ma1, Chunsheng Zhi3, Mingchang Du2, Liangquan Zhai2, Zhengbo Yang2, Jiayuan Wang4, Yihan Wang4   

  1. 1. Department of Joint Surgery, Shenyang Orthopaedic Hospital, Shenyang 110044, China; Key Laboratory of Osteoarthropathy of Liaoning Province, Shenyang 110044, China
    2. Department of Joint Surgery, Shenyang Orthopaedic Hospital, Shenyang 110044, China
    3. Department of Orthopaedic and Oncology, Shenyang Orthopaedic Hospital, Shenyang 110044, China
    4. Key Laboratory of Osteoarthropathy of Liaoning Province, Shenyang 110044, China
  • Received:2020-03-20 Online:2020-06-05 Published:2020-06-05
  • Contact: Bo Wu

Abstract:

Objective

To investigate the effect of 3D printed collagen/ hydroxyapatite scaffold on osteogenic differentiation of bone marrow mesenchymal stem cells.

Methods

Rat BMSCs were isolated from rat bone marrow. Cell proliferation and differentiation were detected by MTT and ALP activity. After inducing cell culture for 17 days, cells in each group were stained with alizarin red to observe the staining of calcium nodules.

Results

The MTT results showed that there was no significant difference in OD between the extraction group and the control group at different time point (P>0.05). ALP activity results showed that the extraction group had significant differences compared with the control group at different time point (P<0.05); the extraction induction group had significant differences at different time point compared with the extraction group (P<0.05); At 48 h and 72 h, the group had significant differences compared with the extraction group (P<0.05). Alizarin red staining showed that the cells in the control group had no calcium knot nodes. The red area staining was clearly observed under the microscope in the extraction group and the induction group, and the calcium knot nodes were observed under the microscope. The number, size and color depth of the knot nodes were significantly better than those of the other groups.

Conclusion

The scaffold has good biocompatibility, can promote the differentiation of BMSCs to osteogenesis, and has low cytotoxicity. It is suitable for the treatment of bone defect.

Key words: Collagen, Hydroxyapatite, Mesenchymal Stem Cells, Osteogenic differentiation

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