Down-regulation of CXCL11 inhibits colorectal cancer cell growth and epithelial-mesenchymal transition

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Abstract

Background: The poor prognosis of colorectal cancer (CRC) largely results from local invasion and tumor metastases. Epithelial-mesenchymal transition (EMT) is a key step in the progression of solid tumors and plays a vital role in tumor metastasis. Recent studies demonstrate that C-X-C motif chemokine 11 (CXCL11) is involved in various cancers’ progression. However, its biological activity in CRC needs deeper exploration. Methods: The level of CXCL11 in CRC tissues and cell lines was determined using the quantitative real-time PCR (qRT-PCR) assay. The MTT, colony formation, wound healing and Transwell invasion assays were applied to assess the role of CXCL11 in CRC cell growth, migration and invasion, in vitro, respectively. A xenograft model was constructed to analyze the function of CXCL11 in CRC cell growth in vivo. Results: CXCL11 was over-expressed in CRC tissues and cell lines. Repression of CXCL11 significantly inhibited CRC cell migration, invasion and EMT in vitro. In addition, downregulation of CXCL11 reduced CRC cell growth and metastasis in vivo. Finally, we revealed that repression of CXCL11 inhibited the metastatic ability of CRC cell in a N-cadherin dependent manner. Conclusion: In summary, this study explicates the oncogenic activities of CXCL11 in CRC cell growth and metastasis.

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Gao, Y. J., Liu, D. L., Li, S., Yuan, G. F., Li, L., Zhu, H. Y., & Cao, G. Y. (2018). Down-regulation of CXCL11 inhibits colorectal cancer cell growth and epithelial-mesenchymal transition. OncoTargets and Therapy, 11, 7333–7343. https://doi.org/10.2147/OTT.S167872

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