作者: Heidi N. Hilton , Tram B. Doan , J. Dinny Graham , Samantha R. Oakes , Audrey Silvestri
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摘要: Cumulative exposure to estrogen (E) and progesterone (P) over the menstrual cycle significantly influences risk of developing breast cancer. Despite dogma that PR in merely serves as a marker an active receptor (ER), inhibitor proliferative actions E, it is now clear P increases proliferation independently E action. We show here (PR) ER are expressed different epithelial populations, target non-overlapping pathways normal human breast. In cancer, becomes highly correlated with ER, this convergence associated signaling predictive disease metastasis. These data challenge established paradigm function co-operatively breast, have significant implications not only for our understanding biology, but also diagnosis, prognosis and/or treatment options cancer patients.