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Sfrp1 Reduction Results In An Increased Sensitivity To Tgf-Β Signaling, Sallie Smith Schneider, Kelly Gauger, Kerry Chenausky, Molly Murray
Sfrp1 Reduction Results In An Increased Sensitivity To Tgf-Β Signaling, Sallie Smith Schneider, Kelly Gauger, Kerry Chenausky, Molly Murray
Sallie W Smith Schneider
Background Transforming growth factor (TGF)-β plays a dual role during mammary gland development and tumorigenesis and has been shown to stimulate epithelial-mesenchymal transition (EMT) as well as cellular migration. The Wnt/β-catenin pathway is also implicated in EMT and inappropriate activation of the Wnt/β-catenin signaling pathway leads to the development of several human cancers, including breast cancer. Secreted frizzled-related protein 1 (SFRP1) antagonizes this pathway and loss of SFRP1 expression is frequently observed in breast tumors and breast cancer cell lines. We previously showed that when SFRP1 is knocked down in immortalized non-malignant mammary epithelial cells, the cells (TERT-siSFRP1) acquire characteristics …