國家衛生研究院 NHRI:Item 3990099045/3065
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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/3065


    Title: Undecylprodigiosin selectively induces apoptosis in human breast carcinoma cells independent of p53
    Authors: Ho, TF;Ma, CJ;Lu, CH;Tsai, YT;Wei, YH;Chang, JS;La, JK;Cheuh, PJ;Yeh, CT;Tang, PC;Chang, JHT;Ko, JL;Liu, FS;Yen, HCE;Chang, CC
    Contributors: National Institute of Cancer Research
    Abstract: Undecylprodigiosin (UP) is a bacterial bioactive metabolite produced by Streptomyces and Serratia. In this study, we explored the anticancer effect of UP. Human breast carcinoma cell lines BT-20, MCF-7, MDA-MB-231 and T47D and one nonmalignant human breast epithelial cell line, MCF-10A, were tested in this study. We found that UP exerted a potent cytotoxicity against all breast carcinoma cell lines in a dose- and time-dependent manner. In contrast, UP showed limited toxicity to MCF-10A cells, indicating UP's cytotoxic effect is selective for malignant cells. UP's cytotoxic effect was due to apoptosis, as confirmed by positive TUNEL signals, annexin V-binding, caspase 9 activation and PAR-P cleavage. Notably, UP-induced apoptosis was blocked by the pan-caspase inhibitor z-VAD.fmk, further indicating the involvement of caspase activity. Moreover, UP caused a marked decrease of the levels of antiapoptotic BCL-X-L, Survivin and XIAP while enhancing the levels of proapoptotic BIK, BIM, MCL-1S and NOXA, consequently favoring induction of apoptosis. Additionally, we found that cells with functional p53 (MCF-7, T47D) or mutant p53 (BT-20, MDA-MB-231) were both susceptible to UP's cytotoxicity. Importantly, UP was able to induce apoptosis in MCF-7 cells with p53 knockdown by RNA interference, confirming the dispensability of p53 in UP-induced apoptosis. Overall, our results establish that UP induces p53-independent apoptosis in breast carcinoma cells with no marked toxicity to nonmalignant cells, raising the possibility of its use as a new chemotherapeutic drug for breast cancer irrespective of p53 status.
    Keywords: Pharmacology & Pharmacy;Toxicology
    Date: 2007-12-15
    Relation: Toxicology and Applied Pharmacology. 2007 Dec;225(3):318-328.
    Link to: http://dx.doi.org/10.1016/j.taap.2007.08.007
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0041-008X&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000251535000010
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=36448934493
    Appears in Collections:[Others] Periodical Articles

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