中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (46): 7396-7400.doi: 10.3969/j.issn.2095-4344.2014.46.004

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

I型神经纤维瘤病萎缩区椎体终板软骨细胞体外分离培养及表型鉴定

刘学光1,邱 勇2,孙振中1,钱邦平2,王守丰2   

  1. 1无锡市第九人民医院骨科、无锡市手外科医院,江苏省无锡市 214064;2南京大学附属南京鼓楼医院脊柱外科,江苏省南京市  210008
  • 修回日期:2014-10-04 出版日期:2014-11-12 发布日期:2014-11-12
  • 通讯作者: 孙振中,主任医师,无锡市第九人民医院、无锡市手外科医院,江苏省无锡市 214064
  • 作者简介:刘学光,男,1984年生,安徽省蚌埠市人,汉族,2011年南京大学毕业,硕士,医师,主要从事脊柱外科、创伤骨科研究。
  • 基金资助:

    江苏省自然科学基金(BK 2010109)

Culture and identification of chondrocytes isolated from the vertebral endplate of patients with type I neurofibromatosis associated with atrophic changes in vitro  

Liu Xue-guang1, Qiu Yong2, Sun Zhen-zhong1, Qian Bang-ping2, Wang Shou-feng2   

  1. 1Department of Orthopedics, Wuxi No. 9 People’s Hospital (Wuxi Hand Surgery Hospital), Wuxi 214064, Jiangsu Province, China; 2Department of Spine Surgery, Drum Tower Hospital, Nanjing University Medical College, Nanjing 210008, Jiangsu Province, China
  • Revised:2014-10-04 Online:2014-11-12 Published:2014-11-12
  • Contact: Sun Zhen-zhong, Chief physician, Department of Orthopedics, Wuxi No. 9 People’s Hospital (Wuxi Hand Surgery Hospital), Wuxi 214064, Jiangsu Province, China
  • About author:Liu Xue-guang, Master, Physician, Department of Orthopedics, Wuxi No. 9 People’s Hospital (Wuxi Hand Surgery Hospital), Wuxi 214064, Jiangsu Province, China
  • Supported by:

    the Natural Science Foundation of Jiangsu Province, No. BK 2010109

摘要:

背景:以往主要是针对肋软骨、关节软骨、鼻中隔软骨、耳软骨等透明软骨进行研究,而对人椎体终板软骨的体外培养尚不多见。

目的:探讨Ⅰ型神经纤维瘤病伴萎缩性脊柱侧凸患者萎缩区椎体终板软骨细胞体外分离培养的可行性,并对其生物学特性进行观察。
方法:对术中取得的7例Ⅰ型神经纤维瘤病伴萎缩性脊柱侧凸患者顶椎区椎体终板软骨采用两步酶消化结合组织块法进行体外分离培养。细胞传代后倒置相差显微镜下观察细胞形态;Ⅱ型胶原免疫组化染色对软骨细胞进行鉴定;MTT比色法测定细胞增殖情况,描绘第2代软骨细胞的生长曲线。

结果与结论:软骨组织培养2周后周围开始有软骨细胞爬出,再经1周左右可以传代。随着传代次数的增加,软骨细胞逐渐由多角形、圆形、三角形和不规则形变为梭形,折光性下降。Ⅱ型胶原免疫组化染色可见细胞核周围被染成棕褐色。MTT比色法检测显示,第2代终板软骨细胞的生长曲线近似倒“S”形,在第4-7天进入快速增殖期,细胞呈对数生长;到第8-13天达平台期,细胞增殖停止;从第14天开始出现生长抑制。 结果显示采用两步酶消化结合组织块法能够培养出纯度高,活性好的终板软骨细胞。第2代终板软骨细胞在第4-7天活力最好,增殖力旺盛,可以作为研究Ⅰ型神经纤维瘤病伴萎缩性脊柱侧凸发病机制的观察点。



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


全文链接:

关键词: 组织构建, 软骨细胞, 神经纤维瘤病, 细胞培养, 终板, 表型, 江苏省自然科学基金

Abstract:

BACKGROUND: Previous studies have mainly focused on costal cartilage, articular cartilage, nasal septal cartilage, and auricular cartilage, but in vitro culture of human vertebral endplate cartilage is still rarely reported.

OBJECTIVE: To discuss the feasibility of culture of vertebral endplate chondrocytes from type I neurofibromatosis associated with scoliosis patients in vitro and to study the biological characters of the chondrocytes.
METHODS: Through two-step enzymatic digestion and tissue culture, the chondrocytes from the vertebral endplate of seven type I neurofibromatosis patients isolated and cultured in monolayer and passaged to observe the changes of cell morphology under inverted phase contrast microscope. Collagen type II expression was detected by immunocytochemistry to identify whether the cells had chondrocyte characters. The growth kinetics was detected by using MTT colorimetric assay to draw the growth curve of passage 2 chondrocytes.
RESULTS AND CONCLUSION: A few chondrocytes crawled from the cartilage after 2 weeks culture and cells were passaged at 3 weeks. Along with passage going on, the phenotype of chondrocytes was changed from polygonal, round, triangle, and irregular shapes to fusiform. The collagen type II expression in passage 2 cells was positive by immunohistochemical staining. MTT test showed the growth curve of the passage 2 chondrocytes presented a transverse “S”. Cells were found logarithmic growth at days 4-7, reached platform stage at days 8-13, and decreased at day 14. It is an effective and simple procedure by two-step enzymatic digestion and tissue explant method to culture vertebral endplate chondrocytes with high purity and good viability from type I neurofibromatosis patients associated with scoliosis in vitro. Passage 2 chondrocytes from the vertebral endplate exhibit the best viability at days 4-7, which can be used as targets for research of pathogenesis of type I neurofibromatosis with atrophic scoliosis.


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


全文链接:

Key words: neurofibromatosis 1, chondrocytes, cells, cultured

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