Chinese Journal of Tissue Engineering Research ›› 2015, Vol. 19 ›› Issue (2): 187-191.doi: 10.3969/j.issn.2095-4344.2015.02.005

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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

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

CLC Number: