中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (39): 6861-6866.doi: 10.3969/j.issn.2095-4344.2013.39.001

• 骨与关节损伤基础实验 basic experiments of bone and joint injury •    下一篇

Ⅱ型胶原酶消化结合组织块贴壁法分离培养兔髓核细胞

李树文1,武海军2,银和平1,白  明1,杜志才1   

  1. 1内蒙古医科大学第二附属医院,内蒙古自治区呼和浩特市  010030;2内蒙古自治区呼和浩特市第一医院,内蒙古自治区呼和浩特市  010020
  • 出版日期:2013-09-24 发布日期:2013-09-24
  • 通讯作者: 银和平,硕士,教授,主任医师,硕士生导师,内蒙古医科大学第二附属医院,内蒙古自治区呼和浩特市 010030 nmgyhp0471@126.com
  • 作者简介:李树文★,男,1974年生,内蒙古自治区呼和浩特市人,汉族,硕士,副主任医师,主要从事脊柱外科的研究。 lswlsw1974@163.com
  • 基金资助:

    内蒙古自治区教育厅高等学校科学研究基金项目资助(NJZY13423)*

Isolation and culture of rabbit nucleus pulposus cells in vitro by type Ⅱ collagenase digestion methods plus explant culture method

Li Shu-wen1, Wu Hai-jun2, Yin He-ping1, Bai Ming 1, Du Zhi-cai1   

  1. 1 The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot  010030, Inner Mongolia Autonomous Region, China; 2 Hohhot First Hospital, Hohhot  010020, Inner Mongolia Autonomous Region, China
  • Online:2013-09-24 Published:2013-09-24
  • Contact: Yin He-ping, Master, Professor, Chief physician, Master’s supervisor, the Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010030, Inner Mongolia Autonomous Region, China nmgyhp0471@126.com
  • About author:Li Shu-wen★, Master, Associate chief physician, the Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010030, Inner Mongolia Autonomous Region, China lswlsw1974@163.com
  • Supported by:

    Science Foundation+ of Universities by Education Ministry of Inner Mongolia Autonomous Region, No. NJZY13423*

摘要:

背景:椎间盘为负重却缺乏血运的组织,在体外培养过程中存在表型丢失问题,因而容易发生退行性改变,但椎间盘退变的机制尚不明确。
目的:探讨兔髓核细胞分离、贴壁培养、扩增和鉴定的方法,并观察髓核细胞在不同代次的生长特性。
方法:应用Ⅱ型胶原酶消化法和组织块贴壁法相结合的方法,分离、纯化髓核细胞并进行体外扩增,用倒置显微镜观察各代细胞的形态、生长状况,计数细胞数量,并绘制细胞生长曲线。苏木精-伊红染色后光镜下观察细胞形态,免疫细胞化学方法检测细胞Ⅱ型胶原和聚集蛋白聚糖的表达情况,并进行细胞鉴定。
结果与结论:成功的实现了兔髓核细胞体外分离、培养及扩增。生长特性观察发现,髓核细胞第1-3代细胞增殖能力强,活力旺盛,但随着传代次数的增加,细胞增殖能力程逐渐下降的趋势。分离培养的髓核细胞阳性表达聚集蛋白聚糖和Ⅱ型胶原。体外采用Ⅱ型胶原酶消化法和组织块贴壁法相结合,可获得高纯度的髓核细胞,培养的髓核细胞呈类圆形或多角形生长,第1-3代细胞生长活性较强。

关键词: 骨关节植入物, 骨关节损伤基础实验, 髓核细胞, Ⅱ型胶原酶消化法, 组织块贴壁法, Ⅱ型胶原, 聚集蛋白聚糖, 体外培养, 细胞增殖, 省级基金

Abstract:

BACKGROUND: Intervertebral disc can bear load but lack vessels. Nucleus pulposus cells have the problem of phenotype loss during in vitro culture that can lead to degenerative changes. The mechanism of intervertebral disc degeneration remains unclear.   
OBJECTIVE: To explore the approaches of isolation, adherence culture, amplification and identification of the rabbit nucleus pulposus cells in vitro, to observe the growth characteristics of nucleus pulposus cells in different generations.
METHODS: Type Ⅱ collagenase digestion method plus explants culture method was used to isolate and purify nucleus pulposus cells and then amplify in vitro. The morphology and growth of primary and passaged cells was observed under the inverted microscope, the number of cells was counted and the growth curve was draw. The morphology of the cells was observed under light microscope after hematoxylin-eosin staining, and the expressions of collagen type Ⅱ and aggrecan were examined by immunocytochemistry.
RESULTS AND CONCLUSION: Nucleus pulposus cells of rabbit were isolated, cultured and amplified in vitro successfully. Growth activity was observed, and found that the 1-3 generation nucleus pulposus cells proliferated more rapidly and vigorously. The proliferation of nucleus pulposus cells was decreased while the cell passaged more generations. These isolated and cultured nucleus pulposus cells could positively express the collagen type Ⅱ and aggrecan. In vitro combination of type Ⅱ collagenase digestion method and explants culture method could obtain high purity nucleus pulposus cells, and the cultured nucleus pulposus cells were grew in round or polygonal. The 1-3 generation of cells had strong activity.

Key words: collagen type Ⅱ, microbial collagenase, cells, cultured, proteoglycans

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