• J. Cell. Biochem. · Dec 2018

    Knockdown of A-kinase anchor protein 4 inhibits hypoxia-induced epithelial-to-mesenchymal transition via suppression of the Wnt/β-catenin pathway in human gastric cancer cells.

    • Quanying Li, Hongna Tang, Fangfang Hu, and Changjiang Qin.
    • Department of General Surgery, Huaihe Hospital of Henan University, Kaifeng, China.
    • J. Cell. Biochem. 2018 Dec 1; 119 (12): 10013-10020.

    AbstractHypoxia induces epithelial-mesenchymal transition (EMT) in tumorigenesis. A-kinase anchor protein 4 (AKAP4) is a member of AKAPs family and plays a critical role in tumorigenesis. However, the biological role of AKAP4 in gastric cancer remains unknown. Thus, we investigated the effect of AKAP4 on EMT in human gastric cancer cells under hypoxic conditions. Our results showed that AKAP4 expression was significantly upregulated in human gastric cancer cell lines. In addition, silenced expression of hypoxia-inducible factor-1α markedly suppressed AKAP4 expression in gastric cancer cells under hypoxia. Furthermore, knockdown of AKAP4 significantly prevented hypoxia-induced migration, invasion, and EMT process in gastric cancer cells. Mechanistically, knockdown of AKAP4 prevented the activation of the Wnt/β-catenin pathway in gastric cancer cells under hypoxia condition. These findings indicate that knockdown of AKAP4 inhibits hypoxia-induced EMT in human gastric cancer cells, at least in part, via inactivation of the Wnt/β-catenin signaling pathway. It is, therefore, AKAP4 may be a potential therapeutic target for the treatment of gastric cancer.© 2018 Wiley Periodicals, Inc.

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