Myoepithelial cell stefin A suppresses breast cancer invasion

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The mechanisms required for breast cancer cells to spread outside of the ducts and into the surrounding breast tissue are largely unknown. There is increasing evidence that the cell layer surrounding the ducts (myoepithelium) functions to suppress invasion. We aim to test if a protein inhibitor that is expressed in these cells can preventing breast cancer invasion in models of early breast cancer and if its expression can predict those patients that are unlikely to develop invasive cancers.