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SMARCE1 is required for the invasive progression of in situ cancers #MMPMID28377514
Sokol ES; Feng YX; Jin DX; Tizabi MD; Miller DH; Cohen MA; Sanduja S; Reinhardt F; Pandey J; Superville DA; Jaenisch R; Gupta PB
Proc Natl Acad Sci U S A 2017[Apr]; 114 (16): 4153-8 PMID28377514show ga
More than half of ductal carcinoma in situ (DCIS) lesions will never progress to invasive breast cancers. However, the factors that drive invasion are not well understood. Our findings establish SMARCE1 as a clinically relevant factor that promotes the invasive progression of early-stage breast cancers. SMARCE1 drives invasion by serving as a master regulator of genes encoding proinvasive ECM and proteases required to degrade basement membrane. In functional studies in 3D cultures and animal models, SMARCE1 is dispensable for tumor growth but is required for the invasive and metastatic progression of cancers. In patients, SMARCE1 expression specifically identifies early-stage breast, lung, and ovarian cancers that are likely to eventually progress and metastasize.