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Article

Notch1 silencing inhibits proliferation and invasion in SGC‑7901 gastric cancer cells

  • Authors:
    • Guangbing Wei
    • Yuanhong Chang
    • Jianbao Zheng
    • Sai He
    • Nanzheng Chen
    • Xiaolong Wang
    • Xuejun Sun
  • View Affiliations / Copyright

    Affiliations: Department of General Surgery, First Affiliated Hospital of Medical College, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China, Department of Gastroenterology, Xi'an No. 4 Hospital, Affiliated Guangren Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
  • Pages: 1153-1158
    |
    Published online on: January 28, 2014
       https://doi.org/10.3892/mmr.2014.1920
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Abstract

Downregulation of Notch1 has been shown to exert antineoplastic effects in vivo and in vitro. However, the role of the Notch1 gene in the proliferative and invasive ability of gastric cancer cells is not clear. In this study, we investigated the effect of Notch1 gene silencing on the proliferation and invasion of gastric cancer SGC‑7901 cells. Small interfering RNA (siRNA) targeting Notch1 was transfected into SGC‑7901 cells using Lipofectamine 2000. Proliferation of SGC‑7901 cells was then determined by the MTT assay. Notch1 mRNA expression was determined by reverse transcription‑polymerase chain reaction (RT‑PCR). Invasion of the SGC‑7901 cells was detected by the Transwell assay. The protein levels of cyclin D1, cyclin A1 and cyclin-dependent kinase 2 (CDK2) were determined by western blotting. The mRNA levels of matrix metalloproteinase‑2 (MMP‑2) and cyclooxygenase‑2 (COX‑2) were determined by RT‑PCR. Compared to the control group, the Notch1 mRNA level was significantly decreased following transfection. The growth and invasion rates of SGC‑7901 cells were significantly reduced after Notch1 silencing. Additionally, the expression of cyclin D1 and cyclin A1 proteins and of the MMP‑2 and COX‑2 mRNAs was markedly attenuated. From these results, it was concluded that Notch1 gene silencing inhibits the proliferation of gastric SGC‑7901 cells by decreasing the expression of cyclins D1 and A1, and reduces the invasive ability of SGC‑7901 cells through the downregulation of MMP‑2 and COX‑2 genes. Thus, silencing of the Notch1 pathway may be a novel approach in the treatment of gastrointestinal cancer.
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Copy and paste a formatted citation
Spandidos Publications style
Wei G, Chang Y, Zheng J, He S, Chen N, Wang X and Sun X: Notch1 silencing inhibits proliferation and invasion in SGC‑7901 gastric cancer cells. Mol Med Rep 9: 1153-1158, 2014.
APA
Wei, G., Chang, Y., Zheng, J., He, S., Chen, N., Wang, X., & Sun, X. (2014). Notch1 silencing inhibits proliferation and invasion in SGC‑7901 gastric cancer cells. Molecular Medicine Reports, 9, 1153-1158. https://doi.org/10.3892/mmr.2014.1920
MLA
Wei, G., Chang, Y., Zheng, J., He, S., Chen, N., Wang, X., Sun, X."Notch1 silencing inhibits proliferation and invasion in SGC‑7901 gastric cancer cells". Molecular Medicine Reports 9.4 (2014): 1153-1158.
Chicago
Wei, G., Chang, Y., Zheng, J., He, S., Chen, N., Wang, X., Sun, X."Notch1 silencing inhibits proliferation and invasion in SGC‑7901 gastric cancer cells". Molecular Medicine Reports 9, no. 4 (2014): 1153-1158. https://doi.org/10.3892/mmr.2014.1920
Copy and paste a formatted citation
x
Spandidos Publications style
Wei G, Chang Y, Zheng J, He S, Chen N, Wang X and Sun X: Notch1 silencing inhibits proliferation and invasion in SGC‑7901 gastric cancer cells. Mol Med Rep 9: 1153-1158, 2014.
APA
Wei, G., Chang, Y., Zheng, J., He, S., Chen, N., Wang, X., & Sun, X. (2014). Notch1 silencing inhibits proliferation and invasion in SGC‑7901 gastric cancer cells. Molecular Medicine Reports, 9, 1153-1158. https://doi.org/10.3892/mmr.2014.1920
MLA
Wei, G., Chang, Y., Zheng, J., He, S., Chen, N., Wang, X., Sun, X."Notch1 silencing inhibits proliferation and invasion in SGC‑7901 gastric cancer cells". Molecular Medicine Reports 9.4 (2014): 1153-1158.
Chicago
Wei, G., Chang, Y., Zheng, J., He, S., Chen, N., Wang, X., Sun, X."Notch1 silencing inhibits proliferation and invasion in SGC‑7901 gastric cancer cells". Molecular Medicine Reports 9, no. 4 (2014): 1153-1158. https://doi.org/10.3892/mmr.2014.1920
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