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Capsosiphon fulvescens glycoprotein inhibits AGS gastric cancer cell proliferation by downregulating Wnt-1 signaling

  • Authors:
    • Young-Min Kim
    • In-Hye Kim
    • Taek-Jeong Nam
  • View Affiliations / Copyright

    Affiliations: Institute of Fisheries Sciences, Pukyong National University, Ilgwang-myeon, Gijang-gun, Busan 619-911, Republic of Korea
    Copyright: © Kim et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY_NC 3.0].
  • Pages: 1395-1401
    |
    Published online on: August 23, 2013
       https://doi.org/10.3892/ijo.2013.2079
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Abstract

Previously, we examined various apoptosis pathways in the AGS gastric cancer cell line using Capsosiphon fulvescens glycoprotein (Cf-GP). In this study, we focused on the downregulation of the Wnt-1 signaling pathway and cell cycle arrest. Upregulation of the Wnt signaling pathway has been observed in various cancer cells. The Wnt signal ligand acts in both canonical and non-canonical pathways. Among them, Wnt-1 was dependent on the canonical pathway. Here, we show inhibition of Wnt-1 signaling, β-catenin and transcription factors in AGS cells via Cf-GP. First, we examined the Frizzled receptor and Wnt-1 signal-related proteins including Axin, LRP, β-catenin, APC and GSK-3β. In addition, the expression levels of transcription factors Tcf/LEF were determined by western blot analysis and RT-PCR. Based on the data, we confirmed downregulation of the Wnt-1 signaling pathway by Cf-GP. Also, we determined the expression levels of cell cycle-related proteins cyclin D and c-myc, and looked for cell cycle arrest by cell cycle test analysis. We found that AGS cells arrested in the G0/G1 phase by Cf-GP. These results provide a mechanism of AGS cell inhibition through the downregulation of Wnt-1 signaling by Cf-GP.
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Copy and paste a formatted citation
Spandidos Publications style
Kim Y, Kim I and Nam T: Capsosiphon fulvescens glycoprotein inhibits AGS gastric cancer cell proliferation by downregulating Wnt-1 signaling. Int J Oncol 43: 1395-1401, 2013.
APA
Kim, Y., Kim, I., & Nam, T. (2013). Capsosiphon fulvescens glycoprotein inhibits AGS gastric cancer cell proliferation by downregulating Wnt-1 signaling. International Journal of Oncology, 43, 1395-1401. https://doi.org/10.3892/ijo.2013.2079
MLA
Kim, Y., Kim, I., Nam, T."Capsosiphon fulvescens glycoprotein inhibits AGS gastric cancer cell proliferation by downregulating Wnt-1 signaling". International Journal of Oncology 43.5 (2013): 1395-1401.
Chicago
Kim, Y., Kim, I., Nam, T."Capsosiphon fulvescens glycoprotein inhibits AGS gastric cancer cell proliferation by downregulating Wnt-1 signaling". International Journal of Oncology 43, no. 5 (2013): 1395-1401. https://doi.org/10.3892/ijo.2013.2079
Copy and paste a formatted citation
x
Spandidos Publications style
Kim Y, Kim I and Nam T: Capsosiphon fulvescens glycoprotein inhibits AGS gastric cancer cell proliferation by downregulating Wnt-1 signaling. Int J Oncol 43: 1395-1401, 2013.
APA
Kim, Y., Kim, I., & Nam, T. (2013). Capsosiphon fulvescens glycoprotein inhibits AGS gastric cancer cell proliferation by downregulating Wnt-1 signaling. International Journal of Oncology, 43, 1395-1401. https://doi.org/10.3892/ijo.2013.2079
MLA
Kim, Y., Kim, I., Nam, T."Capsosiphon fulvescens glycoprotein inhibits AGS gastric cancer cell proliferation by downregulating Wnt-1 signaling". International Journal of Oncology 43.5 (2013): 1395-1401.
Chicago
Kim, Y., Kim, I., Nam, T."Capsosiphon fulvescens glycoprotein inhibits AGS gastric cancer cell proliferation by downregulating Wnt-1 signaling". International Journal of Oncology 43, no. 5 (2013): 1395-1401. https://doi.org/10.3892/ijo.2013.2079
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