中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (30): 4810-4815.doi: 10.3969/j.issn.2095-4344.2014.30.009

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

不同多肽修饰方法对纯钛微弧氧化膜层性能的影响

王  磊1,闫凤英2,陈建治3,王守彪4   

  1. 1青岛大学医院口腔科,山东省青岛市  266071
    2青岛科技大学材料科学与工程学院,山东省青岛市  266042
    3浙江中医药大学口腔医学院,浙江省杭州市  310053
    4青岛大学医学院基础学院,山东省青岛市  266071
  • 修回日期:2014-05-24 出版日期:2014-07-16 发布日期:2014-08-08
  • 通讯作者: 王磊,青岛大学医院口腔科,山东省青岛市 266071
  • 作者简介:王磊,男,1975年生,山东省青岛市人,汉族,2007年青岛大学毕业,硕士,主治医师,主要从事口腔种植材料改性研究。
  • 基金资助:

    山东省自然科学基金(青年基金)(ZR2010HQ025)

Effect of different polypeptide modification methods on properties of micro-arc oxidation coatings covering pure titanium

Wang Lei1, Yan Feng-ying2, Chen Jian-zhi3, Wang Shou-biao4   

  1. 1Department of Stomatology, Affiliated Hospital of Qingdao University, Qingdao 266071, Shandong Province, China
    2College of Material Science and Engineering, Qingdao University of Science & Technology, Qingdao 266042, Shandong Province, China
    3College of Stomatology, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang Province, China
    4School of Basic Medical Science, Medical College of Qingdao University, Qingdao 266071, Shandong Province, China
  • Revised:2014-05-24 Online:2014-07-16 Published:2014-08-08
  • Contact: Wang Lei, Master, Attending physician, Department of Stomatology, Affiliated Hospital of Qingdao University, Qingdao 266071, Shandong Province, China
  • About author:Wang Lei, Master, Attending physician, Department of Stomatology, Affiliated Hospital of Qingdao University, Qingdao 266071, Shandong Province, China
  • Supported by:

    the Natural Science Foundation of Shandong Province For Youths, No. ZR2010HQ025

摘要:

背景:理论上推测钛基-微弧氧化陶瓷膜-精氨酸-甘氨酸-天冬氨酸(RGD)序列多肽的结合模式应具较好的力学和生物学性能。
目的:观察不同修饰方法固定RGD多肽后,钛基体微弧氧化膜层表面的微观结构和细胞增殖。
方法:取纯钛与微弧氧化纯钛试件共90枚,分3种方法固定RGD多肽,分别为RGD多肽物理吸附修饰纯钛组、RGD多肽物理吸附修饰微弧氧化组与RGD多肽化学偶联修饰微弧氧化组,每组30枚。应用荧光显微镜观察3组试件表面接枝效果,采用X射线光电子能谱扫描检测试样表面的RGD多肽含量。将3组试件分别与小鼠骨髓基质细胞培养,光镜观察各时间点的细胞黏附及增殖情况。
结果与结论:3组试样表面有大小不一、数量不等的绿色荧光亮点,在单位视野中,RGD多肽化学偶联修饰微弧氧化组荧光最强,提示此组试件接枝了更多的多肽。RGD多肽物理吸附修饰纯钛组试样表面仅含少量或微量多肽,RGD多肽物理吸附修饰微弧氧化组含多肽量居中,RGD多肽化学偶联修饰微弧氧化组含肽量最高。3组试件均无明显的细胞毒性,但RGD多肽化学偶联修饰微弧氧化组细胞生长情况最好。表明化学偶联法可以较好地将RGD多肽固定在含微弧氧化膜层的纯钛试样表面,无明显细胞毒性,有利于细胞的生长增殖。


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, 口腔生物材料, 钛, 微弧氧化, RGD多肽, 化学偶联, 物理吸附, 山东省自然科学基金

Abstract:

BACKGROUND: It can be theoretically speculated that the combination of titanium, micro-arc oxidation coating and arginine-glycin-aspartic acid (RGD) polypeptide will show better mechanical and biological properties.
OBJECTIVE: To observe the microstructure and cell proliferation of the titanium and micro-arc oxidation coatings modified with RGD polypeptide by different modification methods.
METHODS: Ninety specimens of pure titanium and micro-arc oxidation coatings were divided into three groups, with 30 specimens in each group. The first 30 specimens were pure titanium physically decorated with RGD polypeptide only. The other two groups of specimens were physical and chemical coupling adsorption RGD  polypeptide micro-arc oxidation samples, respectively. The fluorescence microscope was used to observe the effects and amounts of grafting RGD polypeptide on each sample. Content of the RGD polypeptide on the surface of the specimens were measured by X-ray photoelectron spectroscopy. The mouse bone marrow stromal cells were cultured on the surfaces of three groups samples, and the adhesion and proliferation of the cells cultured for 3 hours, 12 hours, 24 hours and 3 days were observed by optical microscope respectively.
RESULTS AND CONCLUSION: There were green fluorescence spots, with varying size and amount, on the surface of specimens in three groups. In the unit field of view, the fluorescence was the strongest in chemical coupling adsorption RGD polypeptide micro-arc oxidation samples, indicating that these specimens were grafted with many polypeptides. In physical coupling adsorption RGD polypeptide micro-arc oxidation samples, small amount of polypeptides were found on the surface, and the content of the RGD polypeptide was the highest in chemical coupling adsorption RGD polypeptide micro-arc oxidation samples. No apparent cytotoxicity was observed in three groups. The cell proliferation was the best in chemical coupling adsorption RGD polypeptide micro-arc oxidation samples. Experimental findings suggest that, chemical coupling method can well fix the RGD polypeptides on the surface of pure titanium samples containing micro-arc oxidation, without any cytotoxicity, which contribute to promote the cell growth and proliferation.


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: titanium, peptides

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