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International Journal of Molecular Medicine
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April 2013 Volume 31 Issue 4

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Article

DEC1 is positively associated with the malignant phenotype of invasive breast cancers and negatively correlated with the expression of claudin-1

  • Authors:
    • Yang Liu
    • Yuan Miao
    • Jian Wang
    • Xuyong Lin
    • Liang Wang
    • Hong-Tao Xu
    • En-Hua Wang
  • View Affiliations / Copyright

    Affiliations: Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang 110001, P.R. China
  • Pages: 855-860
    |
    Published online on: February 19, 2013
       https://doi.org/10.3892/ijmm.2013.1279
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Abstract

Differentiated embryo-chondrocyte expressed gene 1 (DEC1) is a basic helix-loop-helix transcriptional regulator, reportedly involved in cell growth, differentiation, apoptosis and tumorigenesis. In breast cancer, DEC1 expression correlates with increased malignant potential and invasiveness. Nevertheless, the detailed mechanisms by which DEC1 modulates breast cancer progression are still unclear. Claudin-1, an important tight junction protein, functions as a tumor invasion suppressor. In the present study, the relationship between DEC1 and claudin-1 in 147 cases of invasive breast ductal carcinomas was examined by immunohistochemistry. Based on the data, DEC1 expression was elevated in invasive breast ductal carcinomas and DEC1 levels were positively correlated with tumor grade (P=0.023). Moreover, DEC1 expression was negatively correlated with the claudin-1 level (correlation coefficient =-0.245, P=0.003). We further identified that, in MCF-7 and MDA-MB-231 breast cancer cell lines, DEC1 knockdown led to the enhanced expression of claudin-1 at both the mRNA and protein levels, and reduced cell invasive capacity. Collectively, our data suggest that overexpression of DEC1 may promote the invasiveness of breast cancer through downregulation of claudin-1.
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Copy and paste a formatted citation
Spandidos Publications style
Liu Y, Miao Y, Wang J, Lin X, Wang L, Xu H and Wang E: DEC1 is positively associated with the malignant phenotype of invasive breast cancers and negatively correlated with the expression of claudin-1. Int J Mol Med 31: 855-860, 2013.
APA
Liu, Y., Miao, Y., Wang, J., Lin, X., Wang, L., Xu, H., & Wang, E. (2013). DEC1 is positively associated with the malignant phenotype of invasive breast cancers and negatively correlated with the expression of claudin-1. International Journal of Molecular Medicine, 31, 855-860. https://doi.org/10.3892/ijmm.2013.1279
MLA
Liu, Y., Miao, Y., Wang, J., Lin, X., Wang, L., Xu, H., Wang, E."DEC1 is positively associated with the malignant phenotype of invasive breast cancers and negatively correlated with the expression of claudin-1". International Journal of Molecular Medicine 31.4 (2013): 855-860.
Chicago
Liu, Y., Miao, Y., Wang, J., Lin, X., Wang, L., Xu, H., Wang, E."DEC1 is positively associated with the malignant phenotype of invasive breast cancers and negatively correlated with the expression of claudin-1". International Journal of Molecular Medicine 31, no. 4 (2013): 855-860. https://doi.org/10.3892/ijmm.2013.1279
Copy and paste a formatted citation
x
Spandidos Publications style
Liu Y, Miao Y, Wang J, Lin X, Wang L, Xu H and Wang E: DEC1 is positively associated with the malignant phenotype of invasive breast cancers and negatively correlated with the expression of claudin-1. Int J Mol Med 31: 855-860, 2013.
APA
Liu, Y., Miao, Y., Wang, J., Lin, X., Wang, L., Xu, H., & Wang, E. (2013). DEC1 is positively associated with the malignant phenotype of invasive breast cancers and negatively correlated with the expression of claudin-1. International Journal of Molecular Medicine, 31, 855-860. https://doi.org/10.3892/ijmm.2013.1279
MLA
Liu, Y., Miao, Y., Wang, J., Lin, X., Wang, L., Xu, H., Wang, E."DEC1 is positively associated with the malignant phenotype of invasive breast cancers and negatively correlated with the expression of claudin-1". International Journal of Molecular Medicine 31.4 (2013): 855-860.
Chicago
Liu, Y., Miao, Y., Wang, J., Lin, X., Wang, L., Xu, H., Wang, E."DEC1 is positively associated with the malignant phenotype of invasive breast cancers and negatively correlated with the expression of claudin-1". International Journal of Molecular Medicine 31, no. 4 (2013): 855-860. https://doi.org/10.3892/ijmm.2013.1279
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