Periostin activates integrin α5β1 through a PI3K/AKT‑dependent pathway in invasion of cholangiocarcinoma

  • Authors:
    • Kusumawadee Utispan
    • Jumaporn Sonongbua
    • Peti Thuwajit
    • Siri Chau-In
    • Chawalit Pairojkul
    • Sopit Wongkham
    • Chanitra Thuwajit
  • View Affiliations

  • Published online on: June 25, 2012     https://doi.org/10.3892/ijo.2012.1530
  • Pages: 1110-1118
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Abstract

Periostin (PN) is mainly produced from stromal fibroblasts in cholangiocarcinoma (CCA) and shows strong impact in cancer promotion. This work aimed to investigate the mechanism that PN uses to drive CCA invasion. It was found that ITGα5β1 and α6β4 showed high expression in non-tumorigenic biliary epithelial cells and in almost all CCA cell lines. PN had preferential binding to CCA cells via ITGα5β1 and blocking this receptor by either neutralizing antibody or siITGα5 could attenuate PN-induced invasion. After PN-ITGα5β1 binding, intracellular pAKT was upregulated whereas there was no change in pERK. Moreover, PN could not activate AKT in condition of treatment with a PI3K inhibitor. These data provide evidence that PN-activated invasion of CCA cells is through the ITGα5β1/PI3K/AKT pathway. Strategies aimed to inhibit this pathway may, thus, provide therapeutic benefits.
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September 2012
Volume 41 Issue 3

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

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Spandidos Publications style
Utispan K, Sonongbua J, Thuwajit P, Chau-In S, Pairojkul C, Wongkham S and Thuwajit C: Periostin activates integrin α5β1 through a PI3K/AKT‑dependent pathway in invasion of cholangiocarcinoma. Int J Oncol 41: 1110-1118, 2012
APA
Utispan, K., Sonongbua, J., Thuwajit, P., Chau-In, S., Pairojkul, C., Wongkham, S., & Thuwajit, C. (2012). Periostin activates integrin α5β1 through a PI3K/AKT‑dependent pathway in invasion of cholangiocarcinoma. International Journal of Oncology, 41, 1110-1118. https://doi.org/10.3892/ijo.2012.1530
MLA
Utispan, K., Sonongbua, J., Thuwajit, P., Chau-In, S., Pairojkul, C., Wongkham, S., Thuwajit, C."Periostin activates integrin α5β1 through a PI3K/AKT‑dependent pathway in invasion of cholangiocarcinoma". International Journal of Oncology 41.3 (2012): 1110-1118.
Chicago
Utispan, K., Sonongbua, J., Thuwajit, P., Chau-In, S., Pairojkul, C., Wongkham, S., Thuwajit, C."Periostin activates integrin α5β1 through a PI3K/AKT‑dependent pathway in invasion of cholangiocarcinoma". International Journal of Oncology 41, no. 3 (2012): 1110-1118. https://doi.org/10.3892/ijo.2012.1530