中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (43): 6929-6934.doi: 10.3969/j.issn.2095-4344.2014.43.007

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

聚乳酸/羟基磷灰石纳米复合物对MC3T3-E1细胞增殖活性的影响

李  敏,唐  元,atik badshah shaikh,史占军,王  健   

  1. 南方医科大学南方医院关节与骨病外科,广东省广州市  510515
  • 收稿日期:2014-09-14 出版日期:2014-10-15 发布日期:2014-10-15
  • 通讯作者: 王健,副主任医师,副教授,南方医科大学南方医院关节与骨病外科,广东省广州市 510515
  • 作者简介:李敏,女,1986年生,重庆市人,汉族,南方医科大学南方医院在读硕士,主要从事骨与关节疾病研究。
  • 基金资助:

    广东省科技厅项目(2011B090300016,S2011040003467)

Nano-hydroxyapatite/polylactic acid biomaterials influence proliferative ability of MC3TC-E1 cells

Li Min, Tang Yuan, Atik Badshah Shaikh, Shi Zhan-jun, Wang Jian   

  1. Department of Joint and Bone Surgery, Nanfang Hospital of Southern Medical University, Guangzhou 510515, Guangdong Province, China
  • Received:2014-09-14 Online:2014-10-15 Published:2014-10-15
  • Contact: Wang Jian, Associate chief physician, Associate professor, Department of Joint and Bone Surgery, Nanfang Hospital of Southern Medical University, Guangzhou 510515, Guangdong Province, China
  • About author:Li Min, Studying for master’s degree, Department of Joint and Bone Surgery, Nanfang Hospital of Southern Medical University, Guangzhou 510515, Guangdong Province, China
  • Supported by:

    the Project of Guangdong Provincial Science and Technology Bureau, No. 2011B090300016, S2011040003467

摘要:

背景:研究表明聚乳酸/羟基磷灰石复合材料与自然骨结构和性能相似,具有骨传导性和良好的生物相容性。
目的:观察聚乳酸/羟基磷灰石纳米复合物与成骨细胞株MC3T3-E1的生物相容性。
方法:分别采用普通完全培养基(对照组)与聚乳酸/羟基磷灰石纳米复合物浸提液(实验组)培养第3代成骨细胞株MC3T3-E1,培养3,5,7 d,采用CCK-8法检测细胞的吸光度值;在培养第7,14天检测细胞碱性磷酸酶、骨钙素、Ⅰ型胶原、核心结合因子α1/成骨特异性转录因子表达。将聚乳酸/羟基磷灰石纳米复合物与第3代成骨细胞株MC3T3-E1共培养,培养7,14 d细胞骨架染色及扫描电镜观察细胞在支架材料上的形态。
结果与结论:随着时间的延长,成骨细胞株MC3T3-E1的吸光度值明显增加,两组细胞吸光度值比较差异无显著性意义。实验组培养第7天细胞碱性磷酸酶活性高于对照组(P < 0.05),培养第14天细胞碱性磷酸酶、Ⅰ型胶原、核心结合因子α1/成骨特异性转录因子表达高于对照组(P < 0.05)。种植7 d后细胞在材料上贴附生长,细胞呈多角形;种植14 d后细胞较7 d前数目明显增多,且完全伸展,呈多角形和梭形。表明聚乳       酸/羟基磷灰石纳米复合物对成骨细胞有良好的生物相容性,无细胞毒性。


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, 纳米材料, 成骨细胞, 细胞培养, 纳米羟基磷灰石, 聚乳酸, 细胞增殖, 生物相容性

Abstract:

BACKGROUND: Studies have shown that polylactic acid/hydroxyapatite (PLA/HA) composite materials have structure and properties similar to natural bone, exhibiting bone conductivity and good biocompatibility.
OBJECTIVE: To evaluate the biocompatibility of nano-hydroxyapatite/polylactic acid (n-HA/PLA) biomaterials with MC3T3-E1 cells.
METHODS: The isolated third generation MC3T3-E1 cells were cultured in complete medium (control group) and n-HA/PLA extract (experimental group) for 3, 5, and 7 days. The material cytotoxicity was determined by Cell Counting Kit-8. Expression of alkaline phosphatase, osteocalcin, type I collagen, core binding factor α1/ osteoblast-specific transcription factor were tested by Real Time-PCR at days 7 and 14 after culture. MC3T3-E1 cells were inoculated onto the biomaterials of n-HA/PLA. Immunofluorescence and scanning electron microscope were use to observe MC3T3-E1 cell morphology and attachment at days 7 and 14 after culture.
RESULTS AND CONCLUSION: The osteoblast proliferation rates in the experimental and control groups were increased gradually with time, and there was no difference in the absorbance between the two groups. At day 4, the activity of alkaline phosphatase was higher in the experimental group than the control group (P < 0.05); at day 7, the expressions of alkaline phosphatase, type I collagen, core binding factor α1/osteoblast-specific 
transcription factor were higher in the experimental group than the control group (P < 0.05). Cells began to grow adherently on the materials at day 7 after co-culture, and present a polygon shape. At day 14, cells on the scaffold increased significantly in number and fully extended with polygon and fusiform morphology. These results reveal that n-HA/PLA biomaterials have good cell compatibility and no cytotoxicity.


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: hydroxyapatites, osteoblasts, materials testing

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