Overexpression of KiSS-1 reduces colorectal cancer cell invasion by downregulating MMP-9 via blocking PI3K/Akt/NF-κB signal pathway

  • Authors:
    • Shaoqin Chen
    • Wei Chen
    • Xiang Zhang
    • Suyong Lin
    • Zhihua Chen
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  • Published online on: February 2, 2016     https://doi.org/10.3892/ijo.2016.3368
  • Pages: 1391-1398
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Abstract

Metastasis of colorectal cancer (CRC) depends critically on MMP-9. KiSS-1 is a human malignant melanoma metastasis-suppressor gene. Thus, the interaction between MMP-9 and KiSS-1 has drawn considerable attention in recent years. In the present study, it was hypothesized that KiSS-1 gene could repress the metastatic potential of colorectal cancer cells by inhibiting the expression of MMP-9. Stable transfection of KiSS-1 specific siRNA and KiSS-1 expression vector in human CRC cell line HCT-116 was achieved by lentivirus infection. Moreover, the cell proliferation, invasiveness, and apoptosis were evaluated by CCK-8 method, transwell experiment, and fluorescence activated cell sorter, respectively. We also investigated the expression of MMP-9, PI3K, Akt, pAKt, and NF-кB subunit p65 using western blotting. KiSS-1 overexpression significantly decreased the cell proliferation and invasiveness of HCT-119 cells, while apoptosis was enhanced. The result of western blotting showed that synthesis of MMP-9, PI3K, p65, and phosphorylation of Akt were significantly blocked by overexpression of KiSS-1. Concatenated treatment of KiSS-1 overexpression vector with PI3K and Akt agonists attenuated the effect of KiSS-1 on the biological activity of CRC cells and also released the expression of MMP-9, PI3K, p65, and phosphorylation of Akt from the influence of overexpression of KiSS-1. Overexpression of KiSS-1 suppressed the invasiveness of CRC cells, and the gene exerted its function by reducing the expression of MMP-9 via blocking of tge PI3K/Akt/NF-κB pathway.
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April 2016
Volume 48 Issue 4

Print ISSN: 1019-6439
Online ISSN:1791-2423

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APA
Chen, S., Chen, W., Zhang, X., Lin, S., & Chen, Z. (2016). Overexpression of KiSS-1 reduces colorectal cancer cell invasion by downregulating MMP-9 via blocking PI3K/Akt/NF-κB signal pathway. International Journal of Oncology, 48, 1391-1398. https://doi.org/10.3892/ijo.2016.3368
MLA
Chen, S., Chen, W., Zhang, X., Lin, S., Chen, Z."Overexpression of KiSS-1 reduces colorectal cancer cell invasion by downregulating MMP-9 via blocking PI3K/Akt/NF-κB signal pathway". International Journal of Oncology 48.4 (2016): 1391-1398.
Chicago
Chen, S., Chen, W., Zhang, X., Lin, S., Chen, Z."Overexpression of KiSS-1 reduces colorectal cancer cell invasion by downregulating MMP-9 via blocking PI3K/Akt/NF-κB signal pathway". International Journal of Oncology 48, no. 4 (2016): 1391-1398. https://doi.org/10.3892/ijo.2016.3368