中国组织工程研究

• 纳米生物材料 nanobiomaterials • 上一篇    下一篇

偏磷酸钙纳米粒子的细胞相容性

吴岳恒1,麦丽萍1,陈  鹏2,张灵敏2,黄焕雷1,曾祥君1,汤顺清2,肖学钧1,余细勇1   

  1. 1广东省医学科学院广东省心血管病研究所、广东省人民医院医学研究部,广东省广州市  510100;2暨南大学生物医学工程研究所,广东省广州市  510632
  • 收稿日期:2013-01-22 修回日期:2013-06-25 出版日期:2013-09-17 发布日期:2013-09-17
  • 通讯作者: 余细勇,教授,博士生导师,广东省医学科学院、广东省人民医院医学研究部,广东省广州市 510100 yuxycn@hotmail.com
  • 作者简介:吴岳恒★,男,1980年生,湖南省株洲市人,汉族,2005年暨南大学毕业,硕士,助理研究员,主要从事心室辅助装置研究,生物材料和组织工程研究。 edgar_wu@yahoo.com.cn
  • 基金资助:

    国家自然科学基金资助项目(30901468)*

Cytocompatibility of calcium metaphosphate nanoparticles

Wu Yue-heng1, Mai Li-ping1, Chen Peng2, Zhang Ling-min2, Huang Huan-lei1, Zeng Xiang-jun1, Tang Shun-qing2, Xiao Xue-jun1, Yu Xi-yong1   

  1. 1Medical Research Center of Guangdong General Hospital, Guangdong Provincial Cardiovascular Institute, Guangdong Academy of Medical Science, Guangzhou  510100, Guangdong Province, China; 2Institute of Biomedical Engineering, Jinan University, Guangzhou  510632, Guangdong Province, China
  • Received:2013-01-22 Revised:2013-06-25 Online:2013-09-17 Published:2013-09-17
  • Contact: Yu Xi-yong, Professor, Doctoral supervisor, Medical Research Center of Guangdong General Hospital, Guangdong Provincial Cardiovascular Institute, Guangdong Academy of Medical Science, Guangzhou 510100, Guangdong Province, China yuxycn@hotmail.com
  • About author:Wu Yue-heng★, Master, Assistant researcher, Medical Research Center of Guangdong General Hospital, Guangdong Provincial Cardiovascular Institute, Guangdong Academy of Medical Science, Guangzhou 510100, Guangdong Province, China edgar_wu@yahoo.com.cn
  • Supported by:

     the National Natural Science Foundation of China, No. 30901468*

摘要:

背景:偏磷酸钙具有优异的细胞相容性能和降解性能及细胞亲和性,人骨髓间充质干细胞可以在多孔偏磷酸钙孔洞内生长和增殖,但有关偏磷酸钙纳米粒子的研究较少。
目的:制备纳米级偏磷酸钙微粒,通过流式细胞术快速检测不同浓度纳米级偏磷酸钙微粒对人骨髓间充质干细胞凋亡的影响。
方法:采用湿法球磨法制备偏磷酸钙纳米粒子,通过扫描电镜和透射电镜观察纳米粒子的形貌,通过X射线衍射分析确定纳米粒子的晶体结构。将偏磷酸钙纳米粒子混入CYAGON OricellTM 基础培养基,使得偏磷酸钙纳米粒子的质量浓度分别为10,1,0.1 mg/L,将其与人骨髓间充质干细胞共培养7 d,通过流式细胞术分析偏磷酸钙纳米粒子质量浓度与细胞凋亡的关系。
结果与结论:采用湿法球磨法成功制备了偏磷酸钙纳米粒子,直径为10-30 nm,粒径分布较均匀,分散性较好,但晶体形状不规则;X射线衍射分析晶相检测其主晶相为β-Ca(PO3)2晶体。10 mg/L质量浓度组细胞G0/G1和G2/M比例高于1,0.1 mg/L质量浓度组(P < 0.01);10 mg/L质量浓度组细胞早期、中晚期、总细胞凋亡率高于1,0.1 mg/L质量浓度组(P < 0.01);说明偏磷酸钙纳米粒子对人骨髓间充质干细胞的增殖有影响,当其质量浓度从1 mg/L增加至10 mg/L后,细胞凋亡率显著增加。

关键词: 生物材料, 纳米生物材料, 偏磷酸钙, 纳米粒子, 流式细胞术, 凋亡率, 国家自然科学基金

Abstract:

BACKGROUND: Calcium metaphosphate has excellent biocompatibility, degradability, and cell affinity. Human bone marrow mesenchymal stem cells can grow and proliferate in the pores of the porous calcium metaphosphate, but less is known about calcium metaphosphate nanoparticles.
OBJECTIVE: To prepare calcium metaphosphate nanoparticles, and to analyze the effect of calcium metaphosphate nanoparticles at different concentrations on apoptosis of human bone marrow mesenchymal stem cells by flow cytometry.
METHODS: The calcium metaphosphate nanoparticles were prepared by wet ball milling. Scanning electron microscopy and transmission electron microscopy were used to observe the morphology of the calcium metaphosphate nanoparticles, and the crystal structure of nanoparticles was analyzed by X-ray diffraction. Calcium metaphosphate nanoparticles were mixed in the CYAGON OricellTM basal medium, and the ncentrations of calcium metaphosphate nanoparticles in the medium were 10, 1, 0.1 mg/L. Human bone marrow mesenchymal stem cells were cultured for 7 days in the above-mentioned media, and apoptosis of human bone marrow mesenchymal stem cells was analyzed by flow cytometry.
RESULTS AND CONCLUSION: Calcium metaphosphate nanoparticles were successfully prepared by wet ball milling, irregular in shape, and the mean diameter was 10-30 nm. X-ray diffraction results showed the crystal structure of nonaparticles was mainly β-Ca(PO3)2. The cell ratio of G0/G1 phase and G2/M phase in 10 mg/L group was obviously higher than that in 1, 0.1 mg/L groups (P < 0.01). The cell apoptosis rates during the early, middle, late stages in 10 mg/L group were obviously higher than those in 1, 0.1 mg/L groups (P < 0.01), and the total cell apoptosis was also significantly increased in 10 mg/L group (P < 0.01). These findings indicate that human bone marrow mesenchymal stem cells proliferation can be inhibited by calcium metaphosphate nanoparticles, and apoptosis rate is increased significantly when the concentration of calcium metaphosphate nanoparticles increases from 1 mg/L to 10 mg/L.

Key words: biocompatible materials, nanoparticles, calcium phosphates, histocompatibility

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