Biomedical Science Letters (대한의생명과학회지)

The Korean Society for Biomedical Laboratory Sciences (대한의생명과학회)
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Parkin Reduces Expression of Monocyte Chemotactic Protein-1 (MCP-1) in TNF-${\alpha}$-stimulated MCF7 Breast Cancer Cells

  • Lee, Kyung-Hong (Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University) ;
  • Lee, Min-Ho (Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University) ;
  • Lee, In-Soo (Department of Clinical Laboratory Science, Hyejeon College) ;
  • Rhee, Ki-Jong (Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University) ;
  • Kim, Yoon-Suk (Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University)
  • Received : 2011.09.22
  • Accepted : 2011.09.27
  • Published : 2011.09.30
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Abstract

Parkin is a putative tumor suppressor protein and its expression is frequently reduced or absent in several types of tumors. In this study, we examined the role of Parkin in mRNA expression of monocyte chemotactic protein-1 (MCP-1) in the breast cancer cell line MCF7. Expression of MCP-1 mRNA increased after TNF-${\alpha}$ treatment. However, overexpression of Parkin induced a decrease in expression of MCP-1 mRNA in TNF-${\alpha}$-stimulated MCF7. This decrease in MCP-1 mRNA by Parkin overexpression occurred in a dose- and time-dependent manner. Using a wound scratch assay, we found that Parkin overexpression in MCF7 cells also resulted in a decrease in cell migration. These results suggest that Parkin down-regulates MCP-1 synthesis leading to decreased migration of tumor cells. We suggest that one possible mechanism by which Parkin acts as a tumor suppressor is by inhibiting migration or metastasis of cancer cells.

Keywords

References

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