中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (12): 1823-1828.doi: 10.3969/j.issn.2095-4344.0198

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

骨骼肌中筋膜源性细胞分化为软骨细胞的能力

向  勇,李广恒   

  1. 郑州大学第一附属医院骨科,河南省郑州市  450000
  • 收稿日期:2017-12-20 出版日期:2018-04-28 发布日期:2018-04-28
  • 通讯作者: 李广恒,博士,教授,博士生导师,郑州大学第一附属医院骨科,河南省郑州市 450000
  • 作者简介:向勇,男,1992 年生,四川省南充市人,汉族,郑州大学在读硕士,主要从事关节外科基础及临床研究。
  • 基金资助:

    国家自然科学基金资助项目(81472136)

Chondrogenic progenitor cells isolated from the fascia of skeletal muscle

Xiang Yong, Li Guang-heng   

  1. Department of Orthopedics, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, Henan Province, China
  • Received:2017-12-20 Online:2018-04-28 Published:2018-04-28
  • Contact: Li Guang-heng, M.D., Professor, Doctoral supervisor, Department of Orthopedics, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, Henan Province, China
  • About author:Xiang Yong, Master candidate, Department of Orthopedics, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, Henan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81472136

摘要:

文章快速阅读:

文题释义:
阿尔新蓝染色:阿尔新蓝属于阳离子染料,是显示酸性黏液物质最特异的染料,染料与酸性基团形成盐键。利用染料的不同pH值及不同电解质浓度,可区分酸性黏液物质的类别,能够特异性地显示软骨细胞胞外基质,检测软骨发育情况。
骨形态发生蛋白4:是机体的多肽生长因子之一,起源于脱钙骨基质,在正常骨折愈合中的软骨内成骨期中表达,与转化生长因子β家族成员一样,与受体结合后,磷酸化引起核基因的表达,可以增加软骨形成及促进分化。
摘要
背景:
骨骼肌中的肌源性细胞在骨形态发生蛋白4与转化生长因子β3的作用下具有成软骨分化的能力,但由于骨骼肌组成复杂,其中包括肌纤维组织、筋膜组织、血管组织、神经组织等,所以其中具备向软骨分化能力的细胞组织来源尚未确定。
目的:观察骨骼肌中筋膜源性细胞分化成软骨细胞的能力,以明确骨骼肌来源的细胞中具有成软骨分化能力的种子细胞。
方法:分离大鼠的臀大肌筋膜组织,剪成细小组织块后于含骨形态发生蛋白4和转化生长因子β3的软骨形成培养基中培养,在第14天收集样本,使用阿尔新蓝、苏木精-伊红染色和番红O染色来鉴定筋膜源性细胞的成软骨细胞分化能力;使用结蛋白、CD34、波形蛋白、v-WF和α平滑肌肌动蛋白相应抗体的免疫染色来研究筋膜源性细胞上各种不同细胞标志物在的表达情况;筋膜源性细胞与L6大鼠成肌细胞不同比例混合(1∶0,4∶1,1∶1,1∶4,0∶1),用免疫染色方法分析筋膜源性细胞和L6细胞分化成软骨细胞的能力。
结果与结论:①当在软骨形成培养基中培养第14天时,在阿尔新蓝和番红O免疫染色为阳性结果,表明筋膜组织块中的细胞具有分化成软骨细胞的能力;②分离的筋膜源性细胞的结蛋白,CD34、v-WF抗原和α平滑肌肌动蛋白的表达是阴性的,但超过90%的细胞表达波形蛋白;③纯筋膜源性细胞成软骨分化能力最强,随着L6大鼠成肌细胞比例增高,其成软骨分化能力逐渐下降;④结果提示,从骨骼肌中筋膜源性细胞表面标记物分析、免疫染色及筋膜源性细胞与L6大鼠成肌细胞混合培养对比后,表明筋膜源性细胞具有分化成软骨细胞的能力,是骨骼肌来源的细胞中具有成软骨能力的种子细胞。

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: 0000-0002-4378-3450(向勇)

关键词: 筋膜细胞, 间充质干细胞, 软骨细胞, 骨形态发生蛋白4, 转化生长因子&beta, 3, 细胞分化, 种子细胞, 成肌细胞, 国家自然科学基金

Abstract:

BACKGROUND: Muscle derived cells in the skeletal muscle have the ability to differentiate into chondrocytes under the induction of bone morphogenic protein 4 and transforming growth factor β3. However, due to the complexity of the skeletal muscle (consisting of muscle fiber, fascia, blood vessel and nerves), the origin of cells has not been identified.
OBJECTIVE: To observe the potential for chondrogenic differentiation of fascia-derived cells (FDCs) in order to clarify the chondrogenic ability of the cells derived from the skeletal muscle. 
METHODS: The fascia was isolated from the rat gluteus maximus, and was then cultured in chondrogenic medium containing bone morphogenic protein 4 and transforming growth factor β3. Samples were harvested on day 14. The chondrogenic differentiation of FDCs was identified by alcian blue, hematoxylin-eosin and safranin O stainings. Cell markers were investigated by immunostaining using the antibodies for desmin, CD34, vimentin, vWF and a-SMA. Immunostaining was used to assay the chondrogenic potential of FDCs cultured with L6 rat myoblasts at varying ratios (1:0, 4:1; 1:1, 1:4 and 0:1). 
RESULTS AND CONCLUSION: FDCs harvested from the skeletal muscle displayed chondrogenic differentiation and formed cartilaginous tissue when cultured for 14 days in chondrogenic medium after alcian blue and safranin O stainings. Cells isolated from the fascia were negative for desmin, CD34, vWF and a-SMA, but over 90% of the cells were positive for vimentin. Mixed FDC and L6 myoblast pellets showed chondrogenic potential decreased with the increasing ratio of L6 myoblasts. From the analysis of cell surface marker of FDCs in the skeletal muscle, immunostaining, and the comparison with L6 rat myoblasts, it shows that FDCs are the seed cells with chondrogenic potential in the skeletal muscle.

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: Muscle, Skeletal, Fascia, Chondrocytes, Tissue Engineering

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