中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (2): 187-191.doi: 10.3969/j.issn.2095-4344.2015.02.005

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

腺病毒介导RNA干扰抑制核心结合因子α1表达阻断软骨细胞的肥大分化

高  博1,幸  嵘2,孔清泉2,项  舟2,杨  婧2,蔡加琴3,黄益州3,李秀群3,陈晓禾3   

  1. 1德阳市人民医院骨科,四川省德阳市  618000;2四川大学华西医院骨科,四川省成都市  610041;3四川大学华西医院,生物治疗国家重点实验室•干细胞与组织工程研究室,四川省成都市  610041
  • 收稿日期:2014-12-22 出版日期:2015-01-08 发布日期:2015-01-08
  • 通讯作者: 孔清泉,博士,硕士生导师,四川大学华西医院骨科,四川省成都市 610041
  • 作者简介:高博,男,1984年生,四川省天全县人,汉族,2011年四川大学华西临床医学院毕业,硕士,医师,主要从事骨与关节损伤研究。
  • 基金资助:

    国家自然科学基金资助项目(30700837);国家自然科学基金面上资助项目(30973049)

Adenovirus-mediated RNA interference against core binding factor alpha 1 inhibits the hypertrophic differentiation of chondrocytes

Gao Bo1, Xing Rong2, Kong Qing-quan2, Xiang Zhou2, Yang Jing2, Cai Jia-qin3, Huang Yi-zhou3,Li Xiu-qun3, Chen Xiao-he3   

  1. 1Department of Orthopedics, People’s Hospital of Deyang City, Deyang 618000, Sichuan Province, China; 2Department of Orthopedics, West China School of Medicine/West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China; 3State Key Laboratory of Biotherapy•Laboratory of Stem Cells and Tissue Engineering, West China School of Medicine/West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
  • Received:2014-12-22 Online:2015-01-08 Published:2015-01-08
  • Contact: Kong Qing-quan, M.D., Master’s supervisor, Department of Orthopedics, West China School of Medicine/West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
  • About author:Gao Bo, Master, Physician, Department of Orthopedics, People’s Hospital of Deyang City, Deyang 618000, Sichuan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 30700837, 30973049

摘要:

背景:软骨细胞肥大分化是软骨内骨化启动的标志,也是软骨内骨化必不可少的步骤,它是一种级联反应,一旦启动就很难阻断,最终结果是形成骨骼结构。RNA干扰技术是一种转录后水平的基因沉默,相关研究显示采用RNA干扰技术阻断核心结合因子α1表达能够有效地抑制异位骨化形成。
目的:利用RNA干扰技术抑制核心结合因子α1表达,从而阻断大鼠软骨细胞肥大分化。
方法:构建沉默SD大鼠核心结合因子基因的腺病毒Ad-Cbfa1-siRNA。利用维甲酸及白细胞介素1α促进软骨细胞肥大分化,观察Ad-Cbfa1-siRNA对核心结合因子α1表达的抑制作用。利用核心结合因子α1免疫组化方法比较各组核心结合因子α1的表达从而分析软骨细胞的肥大分化情况。
结果与结论:经维甲酸和白细胞介素1α诱导后,阴性对照病毒组软骨细胞出现肥大分化,核心结合因子α1的表达呈阳性反应;Ad-Cbfa1-siRNA组软骨细胞中未见核心结合因子α1明显表达。提示利用RNA干扰技术能够明显抑制核心结合因子α1的表达,从而阻断软骨细胞的肥大分化。

 


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, 软骨组织工程, 软骨细胞肥大分化, 核心结合因子, RNA干扰, 腺病毒, 国家自然科学基金

Abstract:

BACKGROUND: Hypertrophic differentiation of chondrocytes is the sign of starting endochondral ossification, and it is also an essential step in endochondral ossification, which is a cascade reaction and difficult to be blocked once started. The end result is the formation of bone structure. RNA interference is a post-transcriptional gene silencing. Relevant studies have shown that the use of RNA interference to block the expression of core binding factor α1 (Cbfα1) can effectively inhibit the formation of heterotopic ossification.
OBJECTIVE: To use RNA intereference technology to suppress Cbfα1 expression so as to achieve the purpose of blocking the hypertrophic diferentiation of chondrocytes.
METHODs: We constructed an adenovirus containing siRNA against Cbfα1 (Ad-Cbfα1-siRNA). Retinoic acid and interleukin-1α were used to induce hypertrophic differetiation of chondrocytes, and then Ad-Cbfα1-siRNA was utilized to inhibit the hypertrophic differentiation of chondrocytes. Immunohistochemistry method was used to analyze the expression of Cbfα1.
RESULTS AND CONCLUSION: After induction with retinoic acid and interleukin-1α, the chondrocytes in the negative control virus group appeared to have hypertrophy and the expression of Cbfα1 was positive. In the Ad-Cbα1-siRNA group, the expression of Cbfα1 was negative. These findings suggest that the inhibition of Cbfα1 by RNA interference can be a powerful way to prevent the hypertrophic differentiation of chondrocytes.

 


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: Chondrocytes, Core Binding Factors, RNA Interference, Adenoviridae

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