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中国生物工程杂志

China Biotechnology
China Biotechnology  2016, Vol. 36 Issue (4): 57-62    DOI: 10.13523/j.cb.20160409
    
Suppression of Runx2 Potentiates BMP2-induced Chondrogenic Differentiation
SUN Ze-xu, ZHAO Chen, LIAO Jun-yi, WANG Qi, XU Wei, CHEN Cheng, HUANG Wei
Department of Orthopedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
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Abstract  

Objective: To investigate the potentiation effect of RNA silenced Runx2 on bone morphogenetic protein 2 (BMP2) induced chondrogenic differentiation of mesenchymal stem cells (MSCs). Method: C3H10T1/2 cells were treated with adenovirus: Ad-BMP2, Ad-SiRunx2 or Ad-GFP. The sulfated glycosaminoglycan of cellular matrix was detected by Alcian Blue Staining. The mRNA level of Runx2, Col2a1, aggrecan , and Col10a1 were detected by RT-PCR,and the protein level of BMP2, Col2a1,Col10a1 were detected by Western blot .Results: The BMP2+SiRunx2 group (C3H10T1/2 cells were treated with AdBMP2 and AdSiRunx2) was more blue than the BMP2 group on day 10 proven by Alcian blue staining. The BMP2+SiRunx2 group showed a higher mRNA level of Col2a1 and aggrecan (P<0.05) and a lower protein level of Col10a1 (P<0.05) than the BMP2 group on day 7 and 14. The BMP2+SiRunx2 group showed a higher protein level of Col2a1(P<0.05) and a lower protein level of Col10a1(P<0.05) than the BMP2 group on day 10. Conclusion: The siRNA targeting Runx2 promotes BMP2-induced stem cell chondrogenic differentiation and supresses the chondrocyte hypertrophy and maturation.



Key wordsRunt-related transcription factor 2      Bone morphogenetic protein 2      C3H10T1/2 cells      Chondrogenic differentiation     
Received: 02 December 2015      Published: 15 February 2016
ZTFLH:  Q254  
Cite this article:

SUN Ze-xu, ZHAO Chen, LIAO Jun-yi, WANG Qi, XU Wei, CHEN Cheng, HUANG Wei. Suppression of Runx2 Potentiates BMP2-induced Chondrogenic Differentiation. China Biotechnology, 2016, 36(4): 57-62.

URL:

https://manu60.magtech.com.cn/biotech/10.13523/j.cb.20160409     OR     https://manu60.magtech.com.cn/biotech/Y2016/V36/I4/57

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