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Interleukin-8 promotes human ovarian cancer cell migration by epithelial–mesenchymal transition induction in vitro

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Abstract

Purpose

It has been well established that high serum levels of interleukin-8 (IL-8) in ovarian cancer result in a poor clinical outcome. Thus, the aim of this study was investigating the role of IL-8 in ovarian cancer development.

Methods

Two human ovarian cancer cell lines (SKOV3 and OVCAR3) were cocultured with IL-8 (100 ng/L) for 24 h, then cell migration was determined by transwell assay. Epithelial–mesenchymal transition (EMT)-associated proteins including E-cadherin and β-catenin, and phosphorylation status of β-catenin were investigated by Western blot analysis.

Results

After treatment with IL-8 (100 ng/L) for 24 h, transwell assay result showed that the number of migrated ovarian cells increased significantly. Western blot analysis revealed that protein levels of E-cadherin were decreased, while that of β-catenin were elevated both in IL-8 pretreated SKOV3 and OVCAR3 cells. We further found that phosphorylation status of β-catenin were elevated either in cytoplasm or in nucleus of these two ovarian cancer cell lines after treatment with IL-8 for 24 h.

Conclusions

Our data suggest that IL-8 induces EMT in ovarian cancer cells and implicates its potential role in enhancing ovarian cancer cell metastasis.

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Acknowledgments

Supported by the National Natural Science Foundation of China (Grant No. 81300467).

Conflict of interest

There is no conflict of interest.

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Authors and Affiliations

  1. Department of Gynecology, The Ninth People’s Hospital of Chongqing, 69 JiaLing Road, Chongqing, 400700, People’s Republic of China

    J. Yin, F. Zeng, N. Wu, K. Kang & H. Yang

  2. Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, People’s Republic of China

    Z. Yang

Authors
  1. J. Yin
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  2. F. Zeng
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  3. N. Wu
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  4. K. Kang
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  5. Z. Yang
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  6. H. Yang
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Corresponding authors

Correspondence to Z. Yang or H. Yang.

Additional information

Juan Yin and Fanqing Zeng have contributed equally to this work.

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Yin, J., Zeng, F., Wu, N. et al. Interleukin-8 promotes human ovarian cancer cell migration by epithelial–mesenchymal transition induction in vitro. Clin Transl Oncol 17, 365–370 (2015). https://doi.org/10.1007/s12094-014-1240-4

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  • DOI: https://doi.org/10.1007/s12094-014-1240-4

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