Chinese Journal of Tissue Engineering Research ›› 2024, Vol. 28 ›› Issue (17): 2667-2674.doi: 10.12307/2024.480

Previous Articles     Next Articles

Polycaprolactone-polydopamine-AOPDM1 scaffold promotes bone formation in a high-glucose environment

Liu Ziyang, Lao An, Xu Chenci, AiRi Shin, Wu Jiaqing, Liu Jiaqiang   

  1. Department of Oral & Cranio-Maxillofacial 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 Research Institute of Stomatology, Shanghai 200011, China
  • Received:2023-08-02 Accepted:2023-09-18 Online:2024-06-18 Published:2023-12-14
  • Contact: Liu Jiaqiang, Chief physician, Professor, Department of Oral & Cranio-Maxillofacial 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 Research Institute of Stomatology, Shanghai 200011, China
  • About author:Liu Ziyang, Master candidate, Department of Oral & Cranio-Maxillofacial 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 Research Institute of Stomatology, Shanghai 200011, China Lao An, Doctoral candidate, Department of Oral & Cranio-Maxillofacial 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 Research Institute of Stomatology, Shanghai 200011, China
  • Supported by:
    National Natural Science Foundation of China (General Program), No. 82071081 (to LJQ); Shanghai Municipal Health Commission Health Industry Clinical Research Project (Excellence Project), No. 20224Z0010 (to LJQ)

PDF

72

Abstract: BACKGROUND: Oral and maxillofacial bone tissue defects can seriously affect the physical and mental health of patients. When bone defects occur in diabetic patients, bone metabolism disorders caused by abnormal blood sugar make it more difficult to repair and treat. 
OBJECTIVE: To attempt to apply AOPDM1, a polypeptide with potential bioactivity to the osteogenic treatment of diabetic patients. 
METHODS: In normal or high-glucose environment, different concentrations of AOPDM1 were used to interfere with mouse bone marrow mesenchymal stem cells, and cell proliferation, alkaline phosphatase activity, mineralization nodules formation and osteogenic differentiation gene expression were detected. The polycaprolactone scaffold was prepared by electrospinning technology, and the scaffold was modified by polydopamine to prepare the polycaprolactone-polydopamine composite scaffold. Finally, the scaffolds were placed in AOPDM1 solution to prepare polycaprolactone-polydopamine-AOPDM1 scaffolds. The water contact angle and mechanical properties of the scaffolds were tested in the three groups. In normal or high-glucose environment, the three groups of scaffolds were co-cultured with mouse bone marrow mesenchymal stem cells, respectively, and cell adhesion, alkaline phosphatase activity and osteopontin expression were detected. 
RESULTS AND CONCLUSION: (1) Compared with normal environment, high-glucose environment inhibited the proliferation of bone marrow mesenchymal stem cells. In the same environment, AOPDM1 could promote the proliferation of mouse bone marrow mesenchymal stem cells. When AOPDM1 concentration was the same, alkaline phosphatase activity, mineralization ability and mRNA expression of type I collagen, osteopontin, alkaline phosphatase, and Runx2 of bone marrow mesenchymal stem cells were decreased in high-glucose environment compared with normal environment. Under the same environment, AOPDM1 could improve the alkaline phosphatase activity, mineralization ability, and mRNA expression of type I collagen, osteopontin, alkaline phosphatase and Runx2 of bone marrow mesenchymal stem cells. (2) The hydrophilicity of polycaprolactone-polydopamine scaffold and polycaprolactone-polydopamine-AOPDM1 scaffold was higher than that of polycaprolactone scaffold (P < 0.001), and there was no significant difference in tensile strength and elastic modulus among the three groups (P > 0.05). Compared with the other two groups of scaffolds, the cells on the polycaprolactone-polydopamine-AOPDM1 scaffold had better adhesion morphology. When the scaffolds were identical, compared with normal environment, high-glucose environment inhibited alkaline phosphatase activity and osteopontin expression of bone marrow mesenchymal stem cells. When the environment was the same, the alkaline phosphatase activity and osteopontin expression of bone marrow mesenchymal stem cells on the polycaprolactone-polydopamine-AOPDM1 scaffold were higher than those on the other two scaffolds. (3) The above results prove that polycaprolactone-polydopamine-AOPDM composite scaffold can promote the osteogenic properties of bone marrow mesenchymal stem cells in high-glucose environment.

Key words: polypeptide, polycaprolactone, polydopamine, composite scaffold, bone marrow mesenchymal stem cell, high-glucose microenvironment, cell proliferation, osteogenic differentiation

CLC Number: