Abstract
Matrix metalloproteinase 9 (MMP-9) is upregulated in various types of malignancy, including human ovarian carcinomas. It promotes invasion, metastasis, growth and the survival of malignant cells. However, relatively little is known about the role of MMP9 in epithelial ovarian carcinoma. Therefore, the aim of the present study was to determine the effects of targeting this molecule on ovarian carcinoma progression. A plasmid, psi-MMP-9, carrying a short hairpin RNA against MMP-9 gene expression was constructed and transfected into the human ovarian cancer cell line SKOV3 using a human U6 promoter-driven DNA template approach to determine the effect of MMP-9 gene RNA interference (RNAi) on the proliferation, apoptosis, migration, invasion and tumorigenicity of the human ovarian carcinoma cells. The results demonstrated that siRNA-mediated knockdown of MMP-9 in the human ovarian cancer cell line SKOV3 inhibited cell proliferation, migration and invasion in vitro. The results also demonstrated that downregulation of MMP-9 led to cell apoptosis in SKOV3 cells, inhibited the expression of anti-apoptotic molecules, including B cell lymphoma-2, survivin and X-linked inhibitor of apoptosis protein, and enhanced the activity of capsase-3...Continue Reading
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