中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (12): 1938-1943.doi: 10.3969/j.issn.2095-4344.2014.12.022

• 材料生物相容性 material biocompatibility • 上一篇    下一篇

人工颈椎间盘不同涂层影响骨髓间充质干细胞的黏附及分化

李俊辉1,俞  兴1,穆晓红1,徐  林1,王  松2,卢俊哲3   

  1. 1北京中医药大学东直门医院骨科,北京市  100700
    2清华大学机械工程系,北京市  100084
    3深圳清华大学研究院,广东省深圳市  518057
  • 修回日期:2014-01-04 出版日期:2014-03-19 发布日期:2014-03-19
  • 通讯作者: 俞兴,博士生导师,主任医师,北京中医药大学东直门医院骨科,北京市 100700 并列通讯作者:徐林,博士生导师,教授,北京中医药大学东直门医院骨科,北京市 100700
  • 作者简介:李俊辉,男,1983年生,河南省浚县人,北京中医药大学在读博士,主要从事脊柱、关节外科研究。
  • 基金资助:

    国家科技支撑计划课题(2012BAI18B05),课题名称:新型人工椎间盘

Effects of different cervical artificial disc coatings on adhesion and differentiation ability of rat bone marrow mesenchymal stem cells

Li Jun-hui1, Yu Xing1, Mu Xiao-hong1, Xu Lin1, Wang Song2, Lu Jun-zhe3   

  1. 1Department of Orthopedics, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
    2Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
    3Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, Guangdong Province, China
  • Revised:2014-01-04 Online:2014-03-19 Published:2014-03-19
  • Contact: Yu Xing, Doctoral supervisor, Chief physician, Department of Orthopedics, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China Corresponding author: Xu Lin, Doctoral supervisor, Professor, Department of Orthopedics, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
  • About author:Li Jun-hui, Studying for doctorate, Department of Orthopedics, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
  • Supported by:

    the National Key Technology R&D Program of China, No. 2012BAI18B05

摘要:

背景:钛合金人工颈椎间盘具有良好的生物相容性,但钛合金存在生物活性差、与骨结合强度低、在生理环境下易造成金属离子释放等问题。
目的:观察国产人工颈椎间盘钛合金终板不同涂层对大鼠骨髓间充质干细胞黏附、分化的影响。
方法:将第3代Wistar大鼠骨髓间充质干细胞,接种于含羟基磷灰石涂层、钛粉复合羟基磷灰石涂层的钛合金板及裸钛合金板的24孔板内,培养的第24,48小时后分别终止培养,扫描电镜观察细胞生长情况;接种24 h后加成骨诱导剂进行诱导,并于第3,5,7天各收集细胞裂解后离心的上清,检测碱性磷酸酶表达。
结果与结论:骨髓间充质干细胞与材料复合培养48 h后,羟基磷灰石组和钛粉复合羟基磷灰石组表面的细胞呈多角形,并伸出细长伪足伸入到材料的微孔内,与材料表面紧密黏附;而裸钛合金组骨髓间充质干细胞分化较差且黏附率低。随时间延长,各组碱性磷酸酶表达均增加,羟基磷灰石组和钛粉复合羟基磷灰石组各时间点的碱性磷酸酶表达均较裸钛合金组明显增高(P < 0.05)。表明羟基磷灰石、钛粉复合羟基磷灰石涂层可有促进大鼠骨髓间充质干细胞的黏附和分化。


中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


全文链接:

关键词: 生物材料, 骨生物材料, 国产人工颈椎间盘, 假体涂层, 大鼠骨髓间充质干细胞, 实验观察

Abstract:

BACKGROUND: Titanium artificial cervical disc has good biocompatibility, but titanium alloy is shown to have poor biological activity, low bonding strength, easy release of metal ions under physiological conditions.
OBJECTIVE: To observe the effects of different coating for the titanium plate of domestic cervical artificial disc on adhesion and differentiation ability of rat bone marrow mesenchymal stem cells.
METHODS: Passage 3 bone marrow mesenchymal stem cells from Wistar rats were seeded into 24-well titanium plates with hydroxyapatite coating, titanium powder+hydroxyapatite coating and bare titanium plate. Cell culture was terminated after 24 and 48 hours, and the cell growth was observed under scanning electron microscope. After 24 hours of inoculation, osteogenic inducer was added; then, cell supernatant was collected at 3, 5, 7 days after cell lysis and centrifugation to detect the activity of alkaline phosphatase.
RESULTS AND CONCLUSION: After composite culture with titanium plates with hydroxyapatite coating or titanium powder+hydroxyapatite coating, cultured cells were in polygonal shape, and pseudopodia were extended into the micropores that were adhered closely to the material surface. Cells cultured with bare titanium plates had poor differentiation and adhesion rate. With time, the expression of alkaline phosphatase was increased in each group, especially in the groups of titanium plates with hydroxyapatite coating and titanium powder+hydroxyapatite coating (P < 0.05). These findings indicate that titanium plates with hydroxyapatite coating or titanium powder+hydroxyapatite coating can promote adhesion and differentiation of rat bone marrow mesenchymal stem cells.


中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


全文链接:

Key words: biocompatible materials, intervertebral disk, bioprosthesis, stem cells

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