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International Journal Of Bilogical Sciences

.: Home > International Journal Of Bilogical Sciences > 2015 > Volume 11 Number 2 > Xuefeng Gu1, 2, Ce Wang3, , Xuefeng Wang3, Guoda Ma1, You Li2, Lili Cui1, Yanyan Chen2, Bin Zhao2 and Keshen Li1, 2

Efficient Inhibition of Human Glioma Development by RNA Interference-Mediated Silencing of PAK5

Xuefeng Gu1, 2, Ce Wang3, , Xuefeng Wang3, Guoda Ma1, You Li2, Lili Cui1, Yanyan Chen2, Bin Zhao2 and Keshen Li1, 2
1. Institute of Neurology, Guangdong Medical College, Zhanjiang, China. 2. Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China. 3. Department of Neurosurgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China. These authors contributed equally to this work. Corresponding author: Keshen Li and Bin Zhao. Keshen Li, Institute of Neurology, Guangdong Medical College, Zhanjiang 524001, China. E-mail: ksl1971@163.com. Bin Zhao, Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical College, Zhanjiang 524001, China. E-mail: zhaobine@vip.tom.com
Abstract :

Glioma is the most common type of primary intracranial tumor and is highly lethal due to its pathogenetic location, high invasiveness, and poor prognosis. Even combined surgery and chemoradiotherapy do not effectively rescue glioma patients. Molecular target therapy is considered a safe and promising therapy for glioma. The identification of a novel, effective target protein in gliomas is of great interest. We found that PAK5 was highly expressed in the tumor tissues of glioma patients and human glioma cell lines. We then used a lentivirus-delivered short hairpin RNA to stably silence PAK5 expression in glioma cells and explore its influence. The results showed that the inhibition of PAK5 reduced cell viability and delayed the cell cycle at the G0/G1 phase in the glioma cells with PAK5 high expression. In addition, silencing PAK5 expression in U87 cells weakened their colony formation ability and in vivo tumorigenesis ability. Further studies demonstrated that PAK5 inhibition led to an increase in cleaved caspase 3 and a decrease in β-catenin. In conclusion, our results suggest that the inhibition of PAK5 by RNA interference might efficiently suppress tumor development of glioma cells with PAK5 high expression. This finding provides a novel, promising therapeutic target for glioma treatment.

Keywords :
glioma, PAK5, tumor development, RNA interference, cell cycle arrest

Date Deposited : 17 Feb 2016 11:41

Last Modified : 17 Feb 2016 11:41

Official URL: http://www.ijbs.com/v11i2

Volume 11, Number 2, - 2015 , ISSN 1449-2288

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