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  • Title: The clinical implications of MMP-11 and CK-20 expression in human breast cancer.
    Author: Cheng CW, Yu JC, Wang HW, Huang CS, Shieh JC, Fu YP, Chang CW, Wu PE, Shen CY.
    Journal: Clin Chim Acta; 2010 Feb; 411(3-4):234-41. PubMed ID: 19914229.
    Abstract:
    BACKGROUND: Tumor invasiveness and metastasis in cancer progression is manifested by epigenetic abnormality. However, it remains unknown whether transcription regulation of matrix metalloproteinase-11(MMP-11) and cytoskeleton-20 (CK-20) genes for the homoeostasis of epithelial/connective interface that can enhance cell dissemination and invasion may act as alternative mutators to tumor clinicopathology. METHODS: Paired cancerous and tumor-adjacent normal tissues from 72 breast cancer patients were assayed for the expression of MMP-11 and CK-20 by using real-time RT-PCR. The expression profiles were evaluated for the association with clinicopathological factors. RESULTS: Breast tumor tissues displayed higher expression levels of MMP-11 and CK-20 than those of the adjacent non-cancerous tissues. Overexpression of either MMP-11 or CK-20 correlated with patients having poorly differentiated tumors (P(MMP-11)=0.01 and P(CK-20)=0.05) and lymph node metastasis (LNM) (P(MMP-11)=0.004 and P(CK-20)=0.001). A synergistic effect between MMP-11 and CK-20 on risk elevation was significant in patients with advanced tumor stage (OR=2.03, 95%CI=1.10-3.77) and LNM (OR=2.83, 95%CI=1.20-4.71). Additionally, patients lacking progesterone receptor exhibited high expression of MMP-11 and CK-20. CONCLUSION: We demonstrate that MMP-11 and CK-20 are probable prognostic markers whose expression reflects the stages of tumor differentiation and LNM of breast cancer.
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