中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (28): 5139-5144.doi: 10.3969/j.issn.2095-4344.2013.28.007

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

改良简易法获取人退变椎间盘髓核细胞及生物学特点

王  海,黄  博,周  跃,王  建,李长青   

  1. 解放军第三军医大学新桥医院骨科,重庆市  400037
  • 出版日期:2013-07-09 发布日期:2013-07-09
  • 通讯作者: 周跃,博士,教授,主任医师,解放军第三军医大学新桥医院骨科,重庆市 400037 happyzhou@vip.163.com
  • 作者简介:王海,男,1981年生,湖南省耒阳市人,汉族,解放军第三军医大学在读硕士,主要从事脊柱外科的基础与临床研究。 awangling@163.com
  • 基金资助:

    国家自然科学基金资助项目(81101364; 81071498)

Biological characteristics of nucleus pulposus cells from human degenerative intervertebral disc using the improved simple method

Wang Hai, Huang Bo, Zhou Yue, Wang Jian, Li Chang-qing   

  1. Department of Orthopedics, Xinqiao Hospital, Third Military Medical University of PLA, Chongqing  400037, China
  • Online:2013-07-09 Published:2013-07-09
  • Contact: Zhou Yue, M.D., Professor, Chief physician, Department of Orthopedics, Xinqiao Hospital, Third Military Medical University of PLA, Chongqing 400037, China happyzhou@vip.163.com
  • About author:Wang Hai, Studying for master’s degree, Department of Orthopedics, Xinqiao Hospital, Third Military Medical University of PLA, Chongqing 400037, China awangling@163.com
  • Supported by:

    the National Natural Science Foundation of China, No. 81101364*, 81071498*

摘要:

背景:目前较常应用的原代髓核细胞培养方法,多应用Ⅱ型胶原酶联合胰酶消化法、单纯Ⅱ型胶原酶消化法等,但这些方法获取细胞数量偏少存在一定的缺限。

目的:利用改良简易传统的方法从人退变椎间盘获取髓核细胞。

方法:分离培养髓核细胞,每日倒置相差显微镜下观察髓核细胞形态,取原代和传代细胞培养悬液进行锥虫蓝细胞活性检测,分别于第1,3,5,7,9,11,13天采用MTT法测细胞生长情况,激光扫描共聚焦显微镜观察细胞形态。

结果与结论:成功分离出髓核细胞,成功传至P3代。原代细胞生长为梭形,P1及P2传代细胞形态多呈三角形或多角形,类似成纤维细胞形态,接近融合时呈铺路石样外观。锥虫蓝染色细胞活力测定原代分离时活力为99%,第3代细胞活力稍下降为93%-95%。髓核细胞随着传代的次数的增加,增殖活性逐渐降低,P2代和P3代在对数生长期相对P1代也逐渐趋于平缓。激光共聚焦显微镜观察细胞形态与相差显微镜观察的结果相似。结果提示,改良简易法相对于传统方法能可靠地获取人退变椎间盘多种细胞且所获细胞表现出了良好的生物学性能。

关键词: 组织构建, 软骨组织构建, 髓核细胞, 改良简易法, 椎间盘, 腰椎间盘突出症, 细胞培养, 细胞增殖, 形态学, 生物学性能, Ⅱ型胶原酶, 细胞生长曲线, 国家自然科学基金

Abstract:

BACKGROUND: The commonly used culture methods for primary intervertebral disc cells are type Ⅱ collagenase alone digestion method, and type Ⅱ collagenase combined trypin digestion method. However,   the acquired cells are few.

OBJECTIVE: To acquire nucleus pulposus cells from human degenerative intervertebral disc using a systemic and simplified method.

METHODS: Nucleus pulposus cells were isolated and cultured. The morphology of nucleus pulposus cells was observed under inverted phase contrast microscope every day. Primary and subcultured cell suspension was applied for the determination of cell viability using trypan blue staining. The cell growth was detected with MTT assay. The cell morphology was observed under laser confocal microscopy.

RESULTS AND CONCLUSION: Nucleus pulposus cells were successfully isolated from from human degenerative intervertebral disc using the improved method, and cells were subcultured to passage 3. Primary cells were fusiform shaped, while cells at passage 1 and 2 were triangle or polygonal, which were similar to fibroblasts. When cells almost reached the confluence, the cells showed slabstone-like appearance. Trypan blue staining showed that, the primary cell viability was 99%, and passage 3 cells had 93%-95% viability. The proliferation of nucleus pulposus cells gradually decreased as the generation increased. Compared with passage1 cells, passage 2 and 3 cells at logarithmic phase trended to be smoother. The cell morphology observed under laser confocal microscopy was similar to the results under phase contrast microscope. The improved simple method can successfully acquire a variety of cells from human degenerative intervertebral disc, and these cells show fine biological properties.

Key words: tissue construction, cartilage tissue construction, nucleus pulposus cells, improved simple method, intervertebral disc, lumbar intervertebral disc protrusion, cell culture, cell proliferation, morphology, biological property, type Ⅱ collagenase, cell growth curve, National Natural Science Foundation of China 

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