中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (13): 1969-1975.doi: 10.12307/2024.139

• 骨髓干细胞 bone marrow stem cells •    下一篇

复合压电薄膜生物相容性及电输出性能与兔骨髓间充质干细胞的成骨分化

王  桢1,2,3,许顺恩1,2,3,汤  耿4,罗四维2,3,滕建祥2,3,谢孟利2,3,何佳林2,3,叶  川1,2,3   

  1. 1贵州医科大学附属医院骨科,贵州省贵阳市   550004;2贵州医科大学,贵州省贵阳市   550004;3组织工程与干细胞实验中心,贵州省贵阳市   550004; 4贵州师范大学机械与电气工程学院,贵州省贵阳市   550025
  • 收稿日期:2023-02-27 接受日期:2023-04-14 出版日期:2024-05-08 发布日期:2023-08-28
  • 通讯作者: 叶川,主任医师,贵州医科大学附属医院骨科,贵州省贵阳市 550004;贵州医科大学,贵州省贵阳市 550004;组织工程与干细胞实验中心,贵州省贵阳市 550004
  • 作者简介:王桢,男,1996年生,湖南省娄底市人,汉族,贵州医科大学在读硕士,主要从事组织工程支架、生物材料、干细胞研究。
  • 基金资助:
    贵州省科技厅资助项目(黔科合平台人才 [2020]6013,黔科合支撑项目[2020]4Y137),项目负责人:叶川

Biocompatibility and electrical output performance of composite piezoelectric film and osteogenic differentiation of rabbit bone marrow mesenchymal stem cells

Wang Zhen1, 2, 3, Xu Shunen1, 2, 3, Tang Geng4, Luo Siwei2, 3, Teng Jianxiang2, 3, Xie Mengli2, 3, He Jialin2, 3, Ye Chuan1, 2, 3   

  1. 1Department of Orthopedics, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China; 2Guizhou Medical University, Guiyang 550004, Guizhou Province, China; 3Research Center of Tissue Engineering and Stem Cell Technique, Guizhou Medical University, Guiyang 550004, Guizhou Province, China; 4College of Mechanical and Electrical Engineering, Guizhou Normal University, Guiyang 550025, Guizhou Province, China
  • Received:2023-02-27 Accepted:2023-04-14 Online:2024-05-08 Published:2023-08-28
  • Contact: Ye Chuan, Chief physician, Department of Orthopedics, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China; Guizhou Medical University, Guiyang 550004, Guizhou Province, China; Research Center of Tissue Engineering and Stem Cell Technique, Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • About author:Wang Zhen, Master candidate, Department of Orthopedics, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China; Guizhou Medical University, Guiyang 550004, Guizhou Province, China; Research Center of Tissue Engineering and Stem Cell Technique, Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • Supported by:
    Guizhou Provincial Department of Science and Technology Project, No. Talents of Qiankehe Platform [2020]6013, Qiankehe Support [2020]4Y137 (to YC)

摘要:


文题释义:

锡钛酸钡钙:是钛酸钡压电陶瓷的固溶体,其压电常数高达460 pC/N,具有良好的生物相容性。
3-羟基丁酸酯4-羟基丁酸酯(poly-3-hydroxybutyrateco/4-hydroxybutyrate,P34HB):含有3-羟基丁酸酯与4-羟基丁酸酯的嵌段共聚物,是一种由微生物发酵而成的天然高分子材料,可应用于可吸收缝线合成、生物敷料、食品包装、污水处理等领域。


背景:可控的压电效应能促进组织的再生与修复,压电材料在负重组织工程领域应用广泛。

目的:制备一种可促进骨组织再生的压电薄膜材料,探究其结构表征、电输出性能、生物相容性及其电输出对兔骨髓间充质干细胞成骨分化的影响。
方法:以聚3-羟基丁酸酯4-羟基丁酸酯(poly-3-hydroxybutyrateco/4-hydroxybutyrate,P34HB)为原料,加入质量比分别为0%,5%,10%,15%,20%的锡钛酸钡钙(Ba0.94Ca0.06Sn0.08Ti0.92O3,BCST)粉末,以二氯甲烷为溶剂,通过真空干燥方法制得150-200 μm厚度BCST/P34HB压电薄膜材料,经油浴极化后,检测其表面形貌、物相组成、压电系数和开路电压,以及BCST/P34HB在110 Hz、0.25 N力幅度下的电输出对兔骨髓间充质干细胞增殖和成骨分化的影响。

结果与结论:①扫描电镜、X射线衍射、水接触角、压电系数检测及电输出性能测试显示,当BCST质量比增加至20%时,BCST/P34HB压电薄膜有着良好的压电性能(d33=5.9 pC/N)及电输出性能(180 mV),更接近500 mV的合适电刺激成骨范围;②活死染色显示,与兔骨髓间充质干细胞共培养第1天,15%组与20%组显示出较少的红色荧光;当培养到第5天时,各组绿色荧光数量较第1天明显增多,10%组、15%组和20%组未见红色荧光,仅0%组和5%组有少量的红色荧光;③阿尔玛蓝染色显示,与兔骨髓间充质干细胞共培养第1,3,5天,随着时间的增加,各组细胞都呈现出增长的趋势,当培养到第5天时,20%组的细胞量明显高于0%组(P < 0.05);④成骨诱导第10天,碱性磷酸酶染色结果显示20%组的染色阳性率明显高于0%组(P=0.000 1);成骨诱导第21天,茜素红染色和钙结节定量分析显示出了与碱性磷酸酶染色相似的趋势,与0%组相比,15%组和20%组均显示出明显的差异(P < 0.01,P < 0.000 1);⑤结果表明,20%BCST/P34HB薄膜具有良好的压电性能、电输出性能、生物相容性及促骨髓间充质干细胞成骨分化能力。

https://orcid.org/0000-0003-2325-1761 (王桢);https://orcid.org/0000-0001-5670-6289 (叶川) 

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

关键词: 骨组织工程, P34HB, 压电材料, 薄膜材料, 成骨分化

Abstract: BACKGROUND: Adjustable piezoelectric effect can promote tissue regeneration and repair. Piezoelectric materials are widely used in weight-bearing tissue engineering.
OBJECTIVE: To prepare a piezoelectric film material that can promote bone regeneration, and to explore its structural characterization, electrical output performance, biocompatibility, and effect of electrical output on osteogenic differentiation of rabbit bone marrow mesenchymal stem cells.
METHODS: Using poly-3-hydroxybutyrateco/4-hydroxybutyrate (P34HB) as raw material, barium calcium stannate titanate powder (Ba0.94Ca0.06Sn0.08Ti0.92O3, BCST) was added according to mass ratios of 0%, 5%, 10%, 15%, and 20%. Dichloromethane was added to solve P34HB, and the thickness of 150-200 μm BCST/P34HB piezoelectric film was prepared by vacuum drying method. After polarization in the oil bath, the surface morphology, crystal phase composition, piezoelectric coefficient and open circuit voltage were tested. The effect of BCST/P34HB electrical output at 110 Hz and 0.25 N force on the proliferation and osteogenic differentiation of rabbit bone marrow mesenchymal stem cells was tested.

RESULTS AND CONCLUSION: (1) Scanning electron microscopy, X-ray diffraction, water contact angle, piezoelectric coefficient and electrical output performance tests showed that when the mass ratio of BCST increased to 20%, the BCST/P34HB piezoelectric film had good piezoelectric properties (d33=5.9 pC/N) and electrical output performance (180 mV), which was closer to the suitable range of 500 mV for electrical stimulation. (2) Live and dead staining showed that on the first day of co-culture, 15% group and 20% group showed less red fluorescence. On the 5th day of culture, the number of green fluorescence in each group was significantly higher than that on the first day, and the red fluorescence was not observed in the 10%, 15% and 20% groups, and only a small amount of red fluorescence was observed in the 0% and 5% groups. (3) On the 1st, 3rd and 5th days of co-culture with rabbit bone marrow mesenchymal stem cells, Almar blue staining exhibited that the number of cells in each group showed an increasing trend with the increase of time. On the 5th day of culture, the number of cells in the 20% group was significantly more than that in the 0% group (P < 0.05). (4) On day 10 of osteogenic induction, alkaline phosphatase staining results showed that the positive rate of the 20% group was significantly higher than that of the 0% group (P=0.000 1). On day 21, alizarin red staining and quantitative analysis of calcium nodules showed a similar trend to alkaline phosphatase staining. Compared with the 0% group, the 15% group and 20% group showed significant differences (P < 0.01, P < 0.000 1). (5) The results showed that 20% BCST/P34HB films had good piezoelectric properties, electrical output properties, biocompatibility and the ability of promoting osteogenic differentiation of bone marrow mesenchymal stem cells.

Key words: bone tissue engineering, P34HB, piezoelectric material, film material, osteogenic differentiation

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