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- W3201487097 abstract "Female breast cancer has become the most commonly diagnosed cancer worldwide. As a tumor suppressor, estrogen receptor β (ERβ) can be potentially targeted for breast cancer therapy.TAD1822-7 was evaluated for ERβ-mediated autophagy and cell death using cell proliferation assay, Annexin V/PI staining, immunofluorescence, western blotting, ERβ siRNA, ERβ plasmid transfection and hypoxia cell models. TAD1822-7 upregulated ERβ causing cell death and induced mitochondrial dysfunction and autophagy companied with mitochondrial located ERβ. Enhanced levels of microtubule associated protein1 light chain 3 (LC3)-II and p62/SQSTM1 (p62) indicated that TAD1822-7 blocked the late-stage autolysosome formation, leading to cell death. Mechanistically, TAD1822-7-induced cell death was mediated by phosphatidylinositol 3-kinase/protein kinase B (PI3K/AKT) signaling pathways. Moreover, TAD1822-7 modulated hypoxia inducible factor (HIF) functions and autophagy via the inhibition of HIF-1β in the context of hypoxia-induced autophagy. ERβ overexpression and ERβ agonist showed similar effects, whereas ERβ siRNA abrogated TAD1822-7-induced cell death, the inhibition of PI3K/AKT pathway and autophagy. The involvement of PI3K/AKT pathway and autophagy was also demonstrated in TAD1822-7-treated hypoxic breast cancer cells.These findings provide new insight into the mechanism underlying the inhibitory effects of TAD1822-7 via ERβ-mediated pathways in breast cancer cells." @default.
- W3201487097 created "2021-09-27" @default.
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- W3201487097 date "2021-11-18" @default.
- W3201487097 modified "2023-10-15" @default.
- W3201487097 title "Induction of estrogen receptor β-mediated autophagy sensitizes breast cancer cells to TAD1822-7, a novel biphenyl urea taspine derivative" @default.
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- W3201487097 doi "https://doi.org/10.1007/s11033-021-06950-5" @default.
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