Salinomycin causes migration and invasion of human fibrosarcoma cells by inducing MMP-2 expression via PI3-kinase, ERK-1/2 and p38 kinase pathways

  • Authors:
    • Seon-Mi Yu
    • Song Ja Kim
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  • Published online on: March 22, 2016     https://doi.org/10.3892/ijo.2016.3448
  • Pages: 2686-2692
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Abstract

Salinomycin (SAL) is a polyether ionophore antibiotic that has recently been shown to regulate a variety of cellular responses in various human cancer cells. However, the effects of SAL on metastatic capacity of HT1080 human fibrosarcoma cells have not been elucidated. We investigated the effect of SAL on migration and invasion, with emphasis on the expression and activation of matrix metalloproteinase (MMP)-2 in HT1080 human fibrosarcoma cells. Treatment of SAL promoted the expression and activation of MMP-2 in a dose- and time-dependent manner, as detected by western blot analysis, gelatin zymography, and real-time polymerase chain reaction. SAL also increased metastatic capacities, as determined by an increase in the migration and invasion of cells using the wound healing assay and the invasion assay, respectively. To confirm the detailed molecular mechanisms of these effects, we measured the activation of phosphoinositide 3 kinase (PI3-kinase) and mitogen-activated protein kinase (MAPK)s (ERK-1/2 and p38 kinase), as detected by the phosphorylated proteins through western blot analysis. SAL treatment increased the phosphorylation of Akt and MAPKs. Inhibition of PI3-kinase, ERK-1/2, and p38 kinase with LY294002, PD98059, and SB203580, respectively, in the presence of SAL suppressed the metastatic capacity by reducing MMP-2 expression, as determined by gelatin zymography. Our results indicate that the PI3-kinase and MAPK signaling pathways are involved in migration and invasion of HT1080 through induction of MMP-2 expression and activation. In conclusion, SAL significantly increases the metastatic capacity of HT1080 cells by inducing MMP-2 expression via PI3-kinase and MAPK pathways. Our results suggest that SAL may be a potential agent for the study of cancer metastatic capacities.
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June-2016
Volume 48 Issue 6

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

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Spandidos Publications style
Yu S and Kim SJ: Salinomycin causes migration and invasion of human fibrosarcoma cells by inducing MMP-2 expression via PI3-kinase, ERK-1/2 and p38 kinase pathways . Int J Oncol 48: 2686-2692, 2016.
APA
Yu, S., & Kim, S.J. (2016). Salinomycin causes migration and invasion of human fibrosarcoma cells by inducing MMP-2 expression via PI3-kinase, ERK-1/2 and p38 kinase pathways . International Journal of Oncology, 48, 2686-2692. https://doi.org/10.3892/ijo.2016.3448
MLA
Yu, S., Kim, S. J."Salinomycin causes migration and invasion of human fibrosarcoma cells by inducing MMP-2 expression via PI3-kinase, ERK-1/2 and p38 kinase pathways ". International Journal of Oncology 48.6 (2016): 2686-2692.
Chicago
Yu, S., Kim, S. J."Salinomycin causes migration and invasion of human fibrosarcoma cells by inducing MMP-2 expression via PI3-kinase, ERK-1/2 and p38 kinase pathways ". International Journal of Oncology 48, no. 6 (2016): 2686-2692. https://doi.org/10.3892/ijo.2016.3448