中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (4): 548-552.doi: 10.3969/j.issn.2095-4344.0088

• 软骨组织构建 cartilage tissue construction • 上一篇    下一篇

非接触共培养条件下软骨细胞诱导骨膜细胞向软骨细胞分化

李  威1,袁  峰2,沃  金1,张  腾1,高  鹏1   

  1. 1徐州医科大学,江苏省徐州市  221000;2徐州医科大学附属医院,江苏省徐州市    221000
  • 收稿日期:2017-08-24 出版日期:2018-02-08 发布日期:2018-02-08
  • 通讯作者: 袁峰,博士,主任医师,教授,徐州医科大学附属医院,江苏省徐州市 221000
  • 作者简介:李威,男,1990年生,江苏省宿迁市人,汉族,2017年徐州医科大学毕业,硕士,主要从事骨外科学临床与基础方面的研究。
  • 基金资助:

    江苏省“科教兴卫”医学重点建设人才项目(H201129)

Indirect co-culture with chondrocytes induces periosteum-derived cells to differentiate into chondrocytes

Li Wei1, Yuan Feng2, Wo Jin1, Zhang Teng1, Gao Peng1   

  1. 1Xuzhou Medical University, Xuzhou 221000, Jiangsu Province, China; 2the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, Jiangsu Province, China
  • Received:2017-08-24 Online:2018-02-08 Published:2018-02-08
  • Contact: Yuan Feng, M.D., Chief physician, Professor, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, Jiangsu Province, China
  • About author:Li Wei, Master, Xuzhou Medical University, Xuzhou 221000, Jiangsu Province, China
  • Supported by:

    the Jiangsu Provincial Key Talent Training Program in Medicine, No. H201129

摘要:

文章快速阅读:

文题释义:
非接触共培养:通过Tanswell小室放入培养板进行细胞培养,该小室有一层带有微孔的具通透性的聚碳酸酯膜,孔径≤4.0 μm,允许生物大分子自由通过,而共培养的两种细胞分别位于膜的两侧,这种细胞间不进行直接接触的培养方式,有利于观察细胞的生长状态,探究细胞间相互作用的机制。
骨膜:骨膜是被覆在除关节以外的骨表面上坚固的含有微血管的结缔组织包膜,由外部的纤维层和内部的形成层组成。在骨端和肌腱附着部位,非常致密地附着在骨上。其他部位的骨膜厚,容易从骨上剥离。

摘要
背景:
在非接触共培养条件下,软骨细胞可诱导骨髓间充质干细胞分化为软骨细胞。骨膜细胞作为软骨修复的种子细胞,其与软骨细胞共培养的作用及影响鲜有研究。
目的:通过软骨细胞与骨膜细胞非接触共培养,利用软骨细胞诱导骨膜细胞向软骨细胞分化。
方法:采用胰酶、Ⅱ型胶原酶消化法分离兔关节软骨细胞;组织块培养法分离兔骨膜细胞。分别取第2代软骨细胞和骨膜细胞,按1∶1比例通过transwell培养板进行非接触共培养作为实验组,单纯骨膜细胞培养作为对照组。培养2周后,倒置显微镜观察2组细胞形态; Ⅱ型胶原免疫组化染色和甲苯胺蓝染色检测2组细胞的Ⅱ型胶原和蛋白聚糖的合成;RT-PCR检测2组细胞的蛋白聚糖、Ⅱ型胶原α1和性别决定区Y框蛋白9 mRNA表达水平。
结果与结论:①培养2周后,实验组共培养骨膜细胞逐渐变为类圆形软骨细胞形态,对照组骨膜细胞仍为长梭形;②实验组共培养骨膜细胞的Ⅱ型胶原免疫组化、甲苯胺蓝染色均为阳性,对照组为阴性;③RT-PCR结果显示,实验组共培养骨膜细胞的蛋白聚糖、Ⅱ型胶原α1、性别决定区Y框蛋白9 mRNA相对表达量明显高于对照组;④结果提示,非接触共培养条件下,软骨细胞可以诱导骨膜细胞向软骨细胞分化。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程
ORCID: 0000-0002-5371-589X(李威)

关键词: 骨膜细胞, 软骨细胞, 非接触共培养, 诱导, 分化, 微环境, 基质, 组织构建, Ⅱ型胶原, 蛋白聚糖

Abstract:

BACKGROUND: Under indirect co-culture conditions, chondrocytes can induce bone marrow mesenchymal stem cells to differentiate into chondrocytes. Osteocytes are the seed cells of chondrocytes, but co-culture of osteocytes with chondrocytes is rarely reported.
OBJECTIVE: To induce the chondrogenic differentiation of periosteum-derived cells (PDCs) by indirect co-culture with chondrocytes.
METHODS: Chondrocytes were isolated from the rabbits by trypsin and collagenase II digestion. Rabbit PDCs were obtained by the explants culture method. Passage 2 chondrocytes and PDCs underwent indirect co-culture at 1:1 in Transwell system as experimental group. PDCs cultured alone were as control group. After 2 weeks of culture, the cellular morphological changes were observed by inverted contrast phase microscope. The expression levels of collagen type II and proteoglycan were detected by collagen type II immunohistochemistry and toluidine blue staining. The mRNA expression levels of proteoglycan, collagen type II and SRY-related protein-9 were detected by RT-PCR.
RESULTS AND CONCLUSION: After 2 weeks of culture, PDCs in the experimental group were gradually transformed to chondrocyte-like cells, while PDCs in the control group still remained long spindle-shaped. Collagen type II immunohistochemistry staining and toluidine blue staining were positive in the experimental group, while the results were negative in the control group. Additionally, RT-PCR results indicated that the relative mRNA expression levels of proteoglycan, collagen type II and SRY-related protein-9 in the experimental group were significantly higher than those in the control group. Therefore, chondrocytes can induce PDCs to differentiate into chondrocytes under indirect co-culture conditions.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Chondrocytes, Periosteum, Cell Differentiation, Collagen Type II, Proteoglycans, Tissue Engineering

中图分类号: