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中国生物工程杂志

China Biotechnology
China Biotechnology  2010, Vol. 30 Issue (06): 14-20    DOI: R734.2
    
The Down-regulation of LINE-1 Encoded ORF-1p Impacts the Characters of A549 Cells
GAO Xu-dong,HU Ming-ming,ZHU Yun-feng
Department of Oncology, Affiliated Hospital, Academy of Military Medical Sciences, Beijing 100071,China
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Abstract  

Objective: To investigate the mechanism of LINE-1 encoded ORF-1p in the tumorigenesis of lung cancer. Methods: The down-regulation of ORF-1p was conducted by RNAi approach and the features of transfected A549 cells were characterized by the approaches of MTT,flow cytometry and soft-agar anchored colony formation. Results: With the constructs of recombinant plasmids, LINE-1 encoded ORF-1p was down-regulated significantly in transfected A549 cells. The characters of transfected A549 cells were appeared to change as follows: Cell proliferation was significantly reduced, which was probably attributed to up-regulation of p21 and p15; cell cycle exhibited S phase arrest (P<0.05); colony formation was significantly attenuated. Conclusion: The down-regulation of ORF-1p can attenuated the A549 characters significantly upon its tumor formation ability.



Key wordsLINE-1      ORF-1p      RNA interference      lung cancer     
Received: 08 February 2010      Published: 12 June 2010
Cite this article:

GAO Xu-Dong, HU Meng-Meng, SHU Yun-Feng. The Down-regulation of LINE-1 Encoded ORF-1p Impacts the Characters of A549 Cells. China Biotechnology, 2010, 30(06): 14-20.

URL:

https://manu60.magtech.com.cn/biotech/R734.2     OR     https://manu60.magtech.com.cn/biotech/Y2010/V30/I06/14

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