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Title: Withaferin A-induced apoptosis in human breast cancer cells is associated with suppression of inhibitor of apoptosis family protein expression. Author: Hahm ER, Singh SV. Journal: Cancer Lett; 2013 Jun 28; 334(1):101-8. PubMed ID: 22935676. Abstract: The present study provides novel insight into the mechanism of apoptosis induction by withaferin A (WA), which is a bioactive constituent of an Ayurvedic medicine plant (Withania somnifera). Exposure of MDA-MB-231 and MCF-7 human breast cancer cells to WA resulted in suppression of XIAP, cIAP-2, and Survivin protein levels. The WA-induced apoptosis was significantly attenuated by ectopic expression of XIAP, Survivin, and cIAP-2 in both cells. However, the WA-mediated inhibition of MDA-MB-231 xenograft growth in vivo was associated with suppression of Survivin protein level only. These results indicate important contribution of Survivin suppression in WA-induced apoptosis.[Abstract] [Full Text] [Related] [New Search]