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Proposed mechanism of Bcl-2 silencing and doxorubicin-induced events in breast cancer cells. Bcl-2 silencing by specific siRNA and doxorubicin induce apoptosis and autophagy that is mediated by downregulation Bcl-2 and induction of ATG5 and Beclin1. Inhibition of autophagy genes prevents cell death by Bcl-2 silencing suggest that autophagy contributes to cell death in MDA-MB-231 breast cancer cells.
