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upr et stress cancer

Elizabeth A Mazzio, Charles A Lewis, Karam F A Soliman
BACKGROUND/AIM: Triple-negative breast cancer (TNBC) is characterized by the absence of hormone receptors (estrogen, progesterone and human epidermal growth factor receptor-2) and a relatively poor prognosis due to inefficacy of hormone receptor-based chemotherapies. It is imperative that we continue to explore natural products with potential to impede growth and metastasis of TNBC. In this study, we screened over 1,000 natural products for capacity to induce cell death in TNBC (MDA-MB -231) cells...
November 2017: Cancer Genomics & Proteomics
Katherine L Cook, Robert Clarke
Antiestrogen therapy is commonly used to treat estrogen receptor (ER)+ breast cancers but acquired and de novo resistance limits their overall curative potential. An endoplasmic reticulum stress pathway, the unfolded protein response, and autophagy are both implicated in the development of antiestrogen therapy resistance in estrogen receptor-α (ER) positive breast cancer. Thus, we recently investigated how ERα can regulate autophagy and the unfolded protein response (Cook et al., FASEBJ, 2014). We showed that inhibiting ERα signaling stimulates autophagosome formation and flux...
2014: Receptors & Clinical Investigation
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