Asian Pacific Journal of Cancer Prevention

Asian Pacific Journal of Cancer Prevention (아시아태평양암예방학회)
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Knockdown of a Proliferation-inducing Ligand (PRIL) Suppresses the Proliferation of Gastric Cancer Cells

  • Cui, Jiu-Wei (Cancer Center of the First Hospital of Jilin University) ;
  • Li, Yan (School of Life Science & Technology, Beijing Institute of Technology) ;
  • Wang, Chang (Cancer Center of the First Hospital of Jilin University) ;
  • Yao, Cheng (Cancer Center of the First Hospital of Jilin University) ;
  • Li, Wei (Cancer Center of the First Hospital of Jilin University)
  • Published : 2012.02.29
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Abstract

Purpose: PRIL (proliferation-inducing ligand) is a newly identified member of the tumor necrosis factor (TNF) family and modulates death ligand-induced apoptosis. Here, we investigated the effect of PRIL on cellular characteristics relating to tumor progression in human gastric cancer. Method: Recombinant lentivirus containing PRIL siRNA was constructed and then infected MGC803 and SGC7901 gastric cancer cells. MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] colony formation and cell cycle analysis were used to study the effect of PRIL knockdown on gastric cancer cell proliferation. Results: PRIL expression in lentivirus infected cells was significantly reduced as evidenced by quantitative real-time PCR. Cell viability and colony formation of MGC803 and SGC7901 cells were significantly hampered in PRIL knock-down cells. Moreover, the cell cycle was arrested at G2/M phase, elucidating the mechanism underlying the inhibitory effect of siRNA on cell proliferation. Conclusions: Our study indicated that PRIL functions in promoting cell growth, and lentivirus-mediated PRIL gene knockdown might be a promising strategy in the treatment of gastric cancer.

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References

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