Title : The proteasome inhibitor Bortezomib (Velcade) as potential inhibitor of estrogen receptor-positive breast cancer.

Pub. Date : 2015 Aug 1

PMID : 25530422






2 Functional Relationships(s)
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1 In the present study, we demonstrate that the proteasome inhibitor Bortezomib strongly inhibits ERalpha and HER2/neu expression, increases expression of cyclin-dependent kinase inhibitors, inhibits expression of multiple genes associated with poor prognosis in ERalpha+ breast cancer patients and induces cell death in ER+ breast cancer cells in both the presence and absence of functional p53. Bortezomib tumor protein p53 Homo sapiens
2 Although Bortezomib increased the levels of p53 and increased the expression of pro-apoptotic target genes in ERalpha+ breast cancer cells harboring wild-type p53, Bortezomib also exerts anti-tumoral effects on ERalpha+ breast cancer cells through suppression of ERalpha expression and inhibition of PI3K/Akt/mammalian target of rapamycin (mTOR) and ERK signaling independently of functional p53. Bortezomib tumor protein p53 Homo sapiens