中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (13): 2093-2097.doi: 10.3969/j.issn.2095-4344.0485

• 干细胞培养与分化 stem cell culture and differentiation • 上一篇    下一篇

大鼠腰椎终板软骨干细胞的分离及分化

王 效,徐宏光,肖 良,刘 晨,金中行   

  1. 皖南医学院第一附属医院(弋矶山医院)脊柱外科,安徽省芜湖市 241001
  • 修回日期:2017-12-06 出版日期:2018-05-08 发布日期:2018-05-08
  • 通讯作者: 徐宏光,教授,硕士生导师,博士生导师,主任医师,皖南医学院第一附属医院(弋矶山医院)脊柱外科,安徽省芜湖市 241001
  • 作者简介:王效,男,1989年生,安徽省芜湖市人,汉族,在读硕士,主要从事脊柱骨科与老年骨病方面的研究。
  • 基金资助:

    国家自然科学基金面上项目(81572185);安徽省自然科学基金面上项目(1708085MH185);安徽省科技厅对外科技合作项目(1704e1002229);安徽省自然科学基金青年项目(1708085QH205)

Isolation and multi-differentiation potential of chondrogenic stem cells from rat lumbar endplates

Wang Xiao, Xu Hong-guang, Xiao Liang, Liu Chen, Jin Zhong-xing   

  1. Department of Spinal Surgery, the First Affiliated Hospital of Wannan Medical College (Yijishan Hospital), Wuhu 241001, Anhui Province, China
  • Revised:2017-12-06 Online:2018-05-08 Published:2018-05-08
  • Contact: Xu Hong-guang, Professor, Chief physician, Master’s supervisor, Doctoral supervisor, Department of Spinal Surgery, the First Affiliated Hospital of Wannan Medical College (Yijishan Hospital), Wuhu 241001, Anhui Province, China
  • About author:Wang Xiao, Master candidate, Department of Spinal Surgery, the First Affiliated Hospital of Wannan Medical College (Yijishan Hospital), Wuhu 241001, Anhui Province, China
  • Supported by:

    the General Project of the National Natural Science Foundation of China, No. 81572185; the General Project of the Natural Science Foundation of Anhui Province, No. 1708085MH185; the External Cooperation Project of Anhui Provincial Science and Technology Department, No. 1704e1002229; the Natural Science Foundation for the Youth in Anhui Province, No. 1708085QH205

摘要:

文章快速阅读:

文题释义:
低熔点琼脂糖悬浮培养筛选系统:
利用干细胞悬浮状态下培养形成细胞克隆团原理筛选干细胞,由3部分组成,先用2%的琼脂糖铺满培养瓶底部,再将细胞悬液与4%的琼脂糖按照1∶1的体积比充分混合后,再次均匀铺满瓶底,最后,加入适量培养基置于37 ℃、体积分数为5%的CO2培养箱中培养,每3 d换液1次,干细胞能够生长并形成细胞克隆团。
克隆形成率:形成克隆的细胞为贴壁和有增殖活力的细胞。克隆形成率反映细胞群体依赖性和增殖能力两个重要性状。

 

摘要
背景:
细胞克隆筛选系统ClonePix能快速有效的挑选出经低熔点琼脂糖悬浮培养获得的细胞克隆团,能够解决生物治疗所需种子细胞数量不足的问题。
目的:分离和鉴定大鼠腰椎终板软骨干细胞。
方法:取4周龄SD大鼠10只,解剖显微镜下获得其腰椎终板软骨,采用胰酶与Ⅱ型胶原酶消化获得原代软骨细胞,将原代软骨细胞在低熔点琼脂糖培养基中悬浮培养,细胞克隆筛选系统ClonePix挑取细胞克隆团进行体外扩增,扩增后观察其细胞形态,然后进行成骨、成脂肪及成软骨方向诱导,并检测单克隆形成能力。
结果与结论:①利用低熔点琼脂糖悬浮培养法能够获得大鼠腰椎终板软骨细胞克隆团,细胞克隆团经体外扩增培养后形态呈梭形;②诱导后经茜素红、油红O及番红染色证明具有成骨、成脂肪及成软骨分化能力;③将细胞克隆团的单个细胞接种于10 cm培养皿,经过12 d的体外扩增培养,肉眼可观察到细胞集落。随着细胞接种密度的增大,细胞集落形成数目减少,以100个细胞密度接种时,集落形成能力最强,可以形成数目大于20个的细胞集落;④结果表明,经低熔点琼脂糖悬浮培养法获得的细胞克隆团具有多向分化能力和高增殖能力。

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
ORCID:
0000-0003-3604-0840(王效)

关键词: 干细胞, 软骨干细胞, 琼脂糖培养基, 腰椎终板软骨, 细胞克隆筛选系统, 国家自然科学基金

Abstract:

BACKGROUND: ClonePix, a cell cloning and screening system, can quickly and efficiently screen cell clones undergoing suspension culture with low melting point agarose, which can be used to provide a sufficient number of seed cells for biological therapies. 
OBJECTIVE: To isolate and identify chondrogenic stem cells from the rat lumbar endplate.
METHODS: The lumbar endplates of 10 Sprague-Dawley rats with an age of 4 weeks were digested using trypsin and type II collagenase to isolate primary chondrogenic stem cells, followed by suspension culture with low melting point agarose. Then, the cell clones were selected by ClonePix and expanded in vitro for morphological observation. The multidirectional differential potential of cell clones was identified through osteogenesis, adipogenesis and chondrogensis tests, and the monoclonal formation ability was determined.
RESULTS AND CONCLUSION: The cell clones could be successfully separated by using the agarose culture system, which were spindle-shaped after in vitro expansion. The osteogenesis, adipogenesis and chondrogensis capacities of the cells were identified using alizarin red, oil red O and safranin staining, respectively. Single cells of the clone group were inoculated into 10 cm culture dishes, and after 12 days of in vitro expansion culture, colonies of cells were observed with the naked eye. With the increase of cell seeding density, the number of cell colonies decreased. When the cells were inoculated into 10 cm culture dishes at a density of 100 cells, the colony forming ability was strongest, and more than 20 cell colonies could be formed. These findings indicate that chondrogenic stem cells that are isolated by the agarose gel culture system have multidirectional differentiation potential and high proliferation ability. 

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: Stem Cells, Cartilage, Lumbar Vertebrae, Sepharose, Tissue Engineering

中图分类号: