Abstract
As a model system for the identification of genes involved in the progression of human breast cancer, differential gene expression in cell lines MCF-7 and MCF-7ADR was investigated. The latter cell line is derived from the former. Cell line MCF-7 is estrogen receptor-positive, vimentin-negative and uninvasive in the Matrigel outgrowth assay and in the nude mouse, while MCF-7ADR is estrogen receptor-negative, hormone-resistant, vimentin-positive, invasive in the Matrigel outgrowth assay and in the nude mouse and resistant to adriamycin due to overexpression of glycoprotein gp170. We have shown that tumor progression in this model system is mediated by transcriptional regulation of mitochondria-related genes, proteases, transmembrane receptors and cell cycle-related gene proteins. Among the genes differentially regulated at the transcriptional level in the cell lines MCF-7 and MCP-7ADR are a new mitochondrial transcript, mitochondrial creatine kinase, matrix metalloproteinase-1, stromelysin-3, urokinase and its receptor, tissue factor, E-cadherin, epidermal growth factor receptor, transmembrane proteins Mat-8 and progression associated protein (PAP), cyclin E, cyclin-dependent kinase-2 and cell cycle inhibitory proteins p16, p21 and p27.
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Schiemann, S., Schwirzke, M., Brünner, N. et al. Molecular Analysis of Two Mammary Carcinoma Cell Lines at the Transcriptional Level as a Model System for Progression of Breast Cancer. Clin Exp Metastasis 16, 129–139 (1998). https://doi.org/10.1023/A:1021941203905
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DOI: https://doi.org/10.1023/A:1021941203905