Journal
CANCER CELL
Volume 6, Issue 1, Pages 17-32Publisher
CELL PRESS
DOI: 10.1016/j.ccr.2004.06.010
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Funding
- NCI NIH HHS [5F32CA94788-02, P50 CA89393-01, T32 CA009172] Funding Source: Medline
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Here we describe the comprehensive gene expression profiles of each cell type composing normal breast tissue and in situ and invasive breast carcinomas using serial analysis of gene expression. Based on these data, we determined that extensive gene expression changes occur in all cell types during cancer progression and that a significant fraction of altered genes encode secreted proteins and receptors. Despite the dramatic gene expression changes in all cell types, genetic alterations were detected only in cancer epithelial cells. The CXCL14 and CXCL12 chemokines overexpressed in tumor myoepithelial cells and myofibroblasts, respectively, bind to receptors on epithelial cells and enhance their proliferation, migration, and invasion. Thus, chemokines may play a role in breast tumorigenesis by acting as paracrine factors.
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