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Article

Upregulation of ABCG2 via the PI3K-Akt pathway contributes to acidic microenvironment-induced cisplatin resistance in A549 and LTEP-a-2 lung cancer cells

  • Authors:
    • Chun Fang Hu
    • Yi Ying Huang
    • Yong Jie Wang
    • Feng Guang Gao
  • View Affiliations / Copyright

    Affiliations: Department of Immunology, Basic Medicine Science, Medical College, Xiamen University, Xiamen, Fujian 361102, P.R. China
  • Pages: 455-461
    |
    Published online on: May 23, 2016
       https://doi.org/10.3892/or.2016.4827
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Abstract

Hypoxia always exists in the processes involved in the development of lung cancer and contributes to an acidic microenvironment. Despite that hypoxia in the tumor microenvironment is associated with the formation of chemotherapeutic resistance, the exact role of an acidic microenvironment in the development of hypoxia-induced lung cancer multidrug resistance is still unknown. In the present study, we acidized the medium with 2-(N-morpholino)-ethanesulfonic acid (MES monohydrate) to mimic the acidic tumor microenvironment and observed the effects of acidification on lung cancer cell viability, the expression of ATP-binding cassette sub-family G member 2 (ABCG2) and myeloid cell leukemia‑1 (Mcl-1), and activation of the PI3K-Akt pathway. Thereafter, we investigated the mechanisms involved in the acidification-induced expression of ABCG2 and Mcl-1, and the potential therapeutic strategy to overcome acidification-associated multidrug resistance formation. We demonstrated that acidification obviously increased the expression of ABCG2 and Mcl-1 via PI3K‑Akt‑mTOR-S6 pathway activation and contributed to multidrug resistance. Inhibition of PI3K-Akt activity efficiently abolished the effect of acidification on cell viability, indicating that the PI3K-Akt pathway may include potential therapeutic target molecules in acidized microenvironment-associated lung cancer chemotherapeutic resistance.
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Copy and paste a formatted citation
Spandidos Publications style
Hu CF, Huang YY, Wang YJ and Gao FG: Upregulation of ABCG2 via the PI3K-Akt pathway contributes to acidic microenvironment-induced cisplatin resistance in A549 and LTEP-a-2 lung cancer cells. Oncol Rep 36: 455-461, 2016.
APA
Hu, C.F., Huang, Y.Y., Wang, Y.J., & Gao, F.G. (2016). Upregulation of ABCG2 via the PI3K-Akt pathway contributes to acidic microenvironment-induced cisplatin resistance in A549 and LTEP-a-2 lung cancer cells. Oncology Reports, 36, 455-461. https://doi.org/10.3892/or.2016.4827
MLA
Hu, C. F., Huang, Y. Y., Wang, Y. J., Gao, F. G."Upregulation of ABCG2 via the PI3K-Akt pathway contributes to acidic microenvironment-induced cisplatin resistance in A549 and LTEP-a-2 lung cancer cells". Oncology Reports 36.1 (2016): 455-461.
Chicago
Hu, C. F., Huang, Y. Y., Wang, Y. J., Gao, F. G."Upregulation of ABCG2 via the PI3K-Akt pathway contributes to acidic microenvironment-induced cisplatin resistance in A549 and LTEP-a-2 lung cancer cells". Oncology Reports 36, no. 1 (2016): 455-461. https://doi.org/10.3892/or.2016.4827
Copy and paste a formatted citation
x
Spandidos Publications style
Hu CF, Huang YY, Wang YJ and Gao FG: Upregulation of ABCG2 via the PI3K-Akt pathway contributes to acidic microenvironment-induced cisplatin resistance in A549 and LTEP-a-2 lung cancer cells. Oncol Rep 36: 455-461, 2016.
APA
Hu, C.F., Huang, Y.Y., Wang, Y.J., & Gao, F.G. (2016). Upregulation of ABCG2 via the PI3K-Akt pathway contributes to acidic microenvironment-induced cisplatin resistance in A549 and LTEP-a-2 lung cancer cells. Oncology Reports, 36, 455-461. https://doi.org/10.3892/or.2016.4827
MLA
Hu, C. F., Huang, Y. Y., Wang, Y. J., Gao, F. G."Upregulation of ABCG2 via the PI3K-Akt pathway contributes to acidic microenvironment-induced cisplatin resistance in A549 and LTEP-a-2 lung cancer cells". Oncology Reports 36.1 (2016): 455-461.
Chicago
Hu, C. F., Huang, Y. Y., Wang, Y. J., Gao, F. G."Upregulation of ABCG2 via the PI3K-Akt pathway contributes to acidic microenvironment-induced cisplatin resistance in A549 and LTEP-a-2 lung cancer cells". Oncology Reports 36, no. 1 (2016): 455-461. https://doi.org/10.3892/or.2016.4827
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