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The c-myc gene is frequently overexpressed in human breast cancer and its target genes are involved in tumorigenesis. Epithelial mesenchymal transitions (EMT), where cells undergo a developmental switch from a polarized epithelial phenotype to a highly motile mesenchymal phenotype, are associated with invasion and motility of cancer cells. Basal E-cadherin expression was down-regulated in c-myc overexpressing...
MCF-7/ADR cells, a doxorubicin-resistant human breast cancer cell line, have acquired resistance to several anti-cancer chemotherapeutic agents, such as anthracyclines and taxol. Here, we found that MCF-7/ADR cells produced lower levels of vascular endothelial growth factor (VEGF) than control MCF-7 cells. Molecular analyses using Western blots and reporter constructs containing either the human VEGF...
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