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Article

Antitumor effect of metformin on cholangiocarcinoma: In vitro and in vivo studies

  • Authors:
    • Takayuki Fujimori
    • Kiyohito Kato
    • Shintaro Fujihara
    • Hisakazu Iwama
    • Takuma Yamashita
    • Kiyoyuki Kobayashi
    • Hideki Kamada
    • Asahiro Morishita
    • Hideki Kobara
    • Hirohito Mori
    • Keiichi Okano
    • Yasuyuki Suzuki
    • Tsutomu Masaki
  • View Affiliations / Copyright

    Affiliations: Department of Gastroenterology and Neurology, Kagawa University, Faculty of Medicine, Graduate School of Medicine, Miki-cho, Kita-gun, Kagawa 761-0793, Japan, Life Science Research Center, Kagawa University, Faculty of Medicine, Graduate School of Medicine, Miki-cho, Kita-gun, Kagawa 761-0793, Japan, Department of Gastroenterological Surgery, Kagawa University, Faculty of Medicine, Graduate School of Medicine, Miki-cho, Kita-gun, Kagawa 761-0793, Japan
  • Pages: 2987-2996
    |
    Published online on: September 17, 2015
       https://doi.org/10.3892/or.2015.4284
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Abstract

Cholangiocarcinoma (CCA) is the most common biliary malignancy and the second most common hepatic malignancy after hepatocellular carcinoma (HCC). Treatment with the anti-diabetic drug metformin has been associated with reduced cancer incidence in patients with type 2 diabetes. Thus, the present study evaluated the effects of metformin on human CCA cell proliferation in vitro and in vivo and identified the microRNAs associated with its antitumor effects. Metformin inhibited the proliferation of the CCA cell lines HuCCT-1 and TFK-1 and blocked the G0 to G1 cell cycle transition, accompanied by AMP kinase pathway activation. Metformin treatment also led to marked decreases in cyclin D1 and cyclin-dependent kinase (Cdk) 4 protein levels and retinoblastoma protein phosphorylation. However, this drug did not affect p27kip protein expression. In addition, it reduced the phosphorylation of Axl, EphA10, ALK and PYK, as well as tumor proliferation in athymic nude mice with xenograft tumors. Furthermore, it markedly altered microRNA expression. These findings suggest that metformin may have clinical use in the treatment of CCA.
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Copy and paste a formatted citation
Spandidos Publications style
Fujimori T, Kato K, Fujihara S, Iwama H, Yamashita T, Kobayashi K, Kamada H, Morishita A, Kobara H, Mori H, Mori H, et al: Antitumor effect of metformin on cholangiocarcinoma: In vitro and in vivo studies. Oncol Rep 34: 2987-2996, 2015.
APA
Fujimori, T., Kato, K., Fujihara, S., Iwama, H., Yamashita, T., Kobayashi, K. ... Masaki, T. (2015). Antitumor effect of metformin on cholangiocarcinoma: In vitro and in vivo studies. Oncology Reports, 34, 2987-2996. https://doi.org/10.3892/or.2015.4284
MLA
Fujimori, T., Kato, K., Fujihara, S., Iwama, H., Yamashita, T., Kobayashi, K., Kamada, H., Morishita, A., Kobara, H., Mori, H., Okano, K., Suzuki, Y., Masaki, T."Antitumor effect of metformin on cholangiocarcinoma: In vitro and in vivo studies". Oncology Reports 34.6 (2015): 2987-2996.
Chicago
Fujimori, T., Kato, K., Fujihara, S., Iwama, H., Yamashita, T., Kobayashi, K., Kamada, H., Morishita, A., Kobara, H., Mori, H., Okano, K., Suzuki, Y., Masaki, T."Antitumor effect of metformin on cholangiocarcinoma: In vitro and in vivo studies". Oncology Reports 34, no. 6 (2015): 2987-2996. https://doi.org/10.3892/or.2015.4284
Copy and paste a formatted citation
x
Spandidos Publications style
Fujimori T, Kato K, Fujihara S, Iwama H, Yamashita T, Kobayashi K, Kamada H, Morishita A, Kobara H, Mori H, Mori H, et al: Antitumor effect of metformin on cholangiocarcinoma: In vitro and in vivo studies. Oncol Rep 34: 2987-2996, 2015.
APA
Fujimori, T., Kato, K., Fujihara, S., Iwama, H., Yamashita, T., Kobayashi, K. ... Masaki, T. (2015). Antitumor effect of metformin on cholangiocarcinoma: In vitro and in vivo studies. Oncology Reports, 34, 2987-2996. https://doi.org/10.3892/or.2015.4284
MLA
Fujimori, T., Kato, K., Fujihara, S., Iwama, H., Yamashita, T., Kobayashi, K., Kamada, H., Morishita, A., Kobara, H., Mori, H., Okano, K., Suzuki, Y., Masaki, T."Antitumor effect of metformin on cholangiocarcinoma: In vitro and in vivo studies". Oncology Reports 34.6 (2015): 2987-2996.
Chicago
Fujimori, T., Kato, K., Fujihara, S., Iwama, H., Yamashita, T., Kobayashi, K., Kamada, H., Morishita, A., Kobara, H., Mori, H., Okano, K., Suzuki, Y., Masaki, T."Antitumor effect of metformin on cholangiocarcinoma: In vitro and in vivo studies". Oncology Reports 34, no. 6 (2015): 2987-2996. https://doi.org/10.3892/or.2015.4284
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