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Metastatic effect of LY-6K gene in breast cancer cells
- Issue Date
- Sep-2009
- Publisher
- SPANDIDOS PUBL LTD
- Keywords
- LY-6K; breast cancer; metastasis; Ras/ERK pathway
- Citation
- INTERNATIONAL JOURNAL OF ONCOLOGY, v.35, no.3, pp 601 - 607
- Pages
- 7
- Journal Title
- INTERNATIONAL JOURNAL OF ONCOLOGY
- Volume
- 35
- Number
- 3
- Start Page
- 601
- End Page
- 607
- ISSN
- 1019-6439
1791-2423
- Abstract
- The over-expression of urokinase receptor in breast cancer cells results in increased tumor invasion, growth and metastasis. As LY-6K belongs to the Ly6/uPAR superfamily, we assessed the association of LY-6K with metastasis in breast cancer cell lines and how the LY-6K gene mediates cancer cell metastasis. The migration ability of cells in which expression of LY-6K gene is up- or downregulated was investigated by transfecting LY-6K naked DNA and treating LY-6K siRNA. Assays of wound healing, migration and invasion were performed. The assays demonstrated that cell migration significantly increased when LY-6K gene is over-expressed or LY-6K protein is abnormally expressed in breast cancer cells. In addition, LY6K caused cancer cell metastasis and it is linked to the Ras/ERK signaling pathway. Our results suggest that LY-6K meaningfully participates in breast cancer cell metastasis by influencing cell migration and invasion through the Ras/ERK pathway.
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