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October 2014 Volume 8 Issue 4

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International Journal of Molecular Medicine is an international journal devoted to molecular mechanisms of human disease.

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Article

Interfering with CXCR4 expression inhibits proliferation, adhesion and migration of breast cancer MDA‑MB‑231 cells

  • Authors:
    • Shanyu Guo
    • Dan Xiao
    • Huihui Liu
    • Xiao Zheng
    • Lei Liu
    • Shougui Liu
  • View Affiliations / Copyright

    Affiliations: Department of General Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
  • Pages: 1557-1562
    |
    Published online on: July 7, 2014
       https://doi.org/10.3892/ol.2014.2323
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Abstract

To investigate the effect and mechanism of the CXC chemokine receptor 4 (CXCR4) in the proliferation and migration of breast cancer, a short‑hairpin RNA (shRNA) eukaryotic expression vector targeting CXCR4 was constructed, and the impact of such on the proliferation, adhesion and migration of human breast cancer MDA‑MB‑231 cells was observed. The fragments of CXCR4‑shRNA were synthesized and cloned into a pGCsi‑U6‑Neo‑green fluorescent protein vector. The recombinant plasmids were transfected into 293T cells and the most efficacious interfering vector was selected. MDA‑MB‑231 cells were transfected by liposome assay. The effects of silencing CXCR4 expression by shRNA on the growth, adhesion and migration of MDA‑MB‑231 cells were determined by Cell Counting Kit‑8, cell‑matrix adhesion and wound‑healing assays. The shRNA eukaryotic expression vectors targeting CXCR4 (CXCR4‑shRNA) were successfully constructed and transfected into 293T cells. Quantitative polymerase chain reaction and western blot analysis revealed that the maximum inhibitory rate of CXCR4 expression was 81.3%. CXCR4‑shRNA transfection significantly inhibited the proliferation of MDA‑MB‑231 cells (P<0.05), as well as the adhesion between MDA‑MB‑231 cells and the extracellular matrix (P<0.05). Furthermore, wound‑healing assays demonstrated that the migration distance of MDA‑MB‑231 cells in the CXCR4‑shRNA transfection group was significantly smaller than that in the control plasmid and blank control groups (P<0.01). The CXCR4‑shRNA interfering vector specifically inhibited CXCR4 expression, as well as the proliferation, adhesion and migration of MDA‑MB‑231 cells.
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Copy and paste a formatted citation
Spandidos Publications style
Guo S, Xiao D, Liu H, Zheng X, Liu L and Liu S: Interfering with CXCR4 expression inhibits proliferation, adhesion and migration of breast cancer MDA‑MB‑231 cells. Oncol Lett 8: 1557-1562, 2014.
APA
Guo, S., Xiao, D., Liu, H., Zheng, X., Liu, L., & Liu, S. (2014). Interfering with CXCR4 expression inhibits proliferation, adhesion and migration of breast cancer MDA‑MB‑231 cells. Oncology Letters, 8, 1557-1562. https://doi.org/10.3892/ol.2014.2323
MLA
Guo, S., Xiao, D., Liu, H., Zheng, X., Liu, L., Liu, S."Interfering with CXCR4 expression inhibits proliferation, adhesion and migration of breast cancer MDA‑MB‑231 cells". Oncology Letters 8.4 (2014): 1557-1562.
Chicago
Guo, S., Xiao, D., Liu, H., Zheng, X., Liu, L., Liu, S."Interfering with CXCR4 expression inhibits proliferation, adhesion and migration of breast cancer MDA‑MB‑231 cells". Oncology Letters 8, no. 4 (2014): 1557-1562. https://doi.org/10.3892/ol.2014.2323
Copy and paste a formatted citation
x
Spandidos Publications style
Guo S, Xiao D, Liu H, Zheng X, Liu L and Liu S: Interfering with CXCR4 expression inhibits proliferation, adhesion and migration of breast cancer MDA‑MB‑231 cells. Oncol Lett 8: 1557-1562, 2014.
APA
Guo, S., Xiao, D., Liu, H., Zheng, X., Liu, L., & Liu, S. (2014). Interfering with CXCR4 expression inhibits proliferation, adhesion and migration of breast cancer MDA‑MB‑231 cells. Oncology Letters, 8, 1557-1562. https://doi.org/10.3892/ol.2014.2323
MLA
Guo, S., Xiao, D., Liu, H., Zheng, X., Liu, L., Liu, S."Interfering with CXCR4 expression inhibits proliferation, adhesion and migration of breast cancer MDA‑MB‑231 cells". Oncology Letters 8.4 (2014): 1557-1562.
Chicago
Guo, S., Xiao, D., Liu, H., Zheng, X., Liu, L., Liu, S."Interfering with CXCR4 expression inhibits proliferation, adhesion and migration of breast cancer MDA‑MB‑231 cells". Oncology Letters 8, no. 4 (2014): 1557-1562. https://doi.org/10.3892/ol.2014.2323
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