中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (45): 7224-7229.doi: 10.3969/j.issn.2095-4344.2015.45.002

• 脂肪干细胞 adipose-derived stem cells • 上一篇    下一篇

丝素蛋白/羟基磷灰石支架对成骨诱导脂肪干细胞活性及成骨性能的影响

刘 浩,褚亚伟,丁 涛,程 力,朱浩明   

  1. 南京医科大学附属无锡市人民医院,江苏省无锡市 214023
  • 收稿日期:2015-08-07 出版日期:2015-11-05 发布日期:2015-11-05
  • 通讯作者: 丁涛,博士,副主任医师,南京医科大学附属无锡市人民医院骨科,江苏省无锡市214023
  • 作者简介:刘浩,男,1990年生,江苏省建湖县人,汉族,在读硕士,主要从事骨科学基础与临床研究。
  • 基金资助:

    无锡市医院管理中心医学技术重大项目(YGZX1111)

Effect of silk fibroin/hydroxyapatite scaffold on the viability and osteogenic properties of adipose-derived stem cells under osteogenic induction

Liu Hao, Chu Ya-wei, Ding Tao, Cheng Li, Zhu Hao-ming   

  1. Department of Orthopedics, Wuxi People’s Hospital Affiliated to Nanjing Medical University, Wuxi 214023, Jiangsu Province, China
  • Received:2015-08-07 Online:2015-11-05 Published:2015-11-05
  • Contact: Ding Tao, M.D., Associate chief physician, Department of Orthopedics, Wuxi People’s Hospital Affiliated to Nanjing Medical University, Wuxi 214023, Jiangsu Province, China
  • About author:Liu Hao, Studying for master’s degree, Department of Orthopedics, Wuxi People’s Hospital Affiliated to Nanjing Medical University, Wuxi 214023, Jiangsu Province, China
  • Supported by:

    the Medical Technology Project of Hospital Management Center of Wuxi, No. YGZX1111

摘要:

背景:成骨诱导后的脂肪干细胞与可降解丝素蛋白/羟基磷灰石支架复合,可望研制出一种具有良好生物相容性及成骨性能的新型骨融合材料。
目的:探讨丝素蛋白/羟基磷灰石支架对成骨诱导脂肪干细胞增殖活性及成骨性能的影响。
方法:获取大鼠脂肪干细胞后体外贴壁培养、扩增,将第3代细胞用条件培养液进行成骨方向的定向诱导培养、扩增,然后接种到预湿的丝素蛋白/羟基磷灰石材料上作为实验组,以相同条件下置入盖玻片和脂肪干细胞培养作为对照组。倒置相差显微镜观察细胞在材料中的生长情况,MTT法检测材料对细胞增殖活性的影响,碱性磷酸酶活性测定评价其成骨能力。
结果与结论:成骨诱导后的脂肪干细胞在丝素蛋白/羟基磷灰石材料上能够良好地黏附和增殖。实验组和对照组细胞增殖活性及碱性磷酸酶活性比较,差异无显著性意义(P > 0.05),证实脂肪干细胞活性及成骨性能不受材料影响,说明丝素蛋白/羟基磷灰石复合材料具有良好的细胞相容性。
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: 干细胞, 脂肪干细胞, 丝素蛋白, 羟基磷灰石, 生物相容性, 支架材料, 成骨性, 复合型支架

Abstract:

BACKGROUND: Adipose-derived stem cells under osteogenic induction can be combined with biodegradable silk fibroin/hydroxyapatite scaffold, which is expected to develop a new biocompatible and osteogenic bone fusion material.

OBJECTIVE: To study the effect of silk fibroin/hydroxyapatite composite on the viability and osteogenic properties of adipose-derived stem cells after osteogenic induction.
METHODS: Adipose-derived stem cells were obtained from rat’s fat tissue, then adherently cultured, proliferated and passaged in vitro. Passage 3 cells were cultured in conditioned medium for osteogenic induction, and then seeded onto silk fibroin/hydroxyapatite scaffold as experimental group. Adipose-derived stem cells cultured on the cover glasses at the same condition acted as control group. The cellular morphology, proliferation and differentiation were assessed respectively by means of phase contrast microscope, MTT assay and alkaline phosphatase activity measurement.

RESULTS AND CONCLUSION: After osteogenic induction, adipose-derived stem cells could adhere to the scaffold material and proliferate on the surface of silk fibroin/hydroxyapatite scaffold normally. No significant difference was found in cell proliferation and alkaline phosphatase activity between the experimental and control groups (P > 0.05), suggesting the cellular activity and function were not affected by the material. These findings indicate that silk fibroin/hydroxyapatite composite material has good cytocompatibility.
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

Key words: Silk, Hydroxyapatites, Stem Cells, Adipose Tissue, Biocompatible Materials, Tissue Engineering