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    Bioorg Med Chem Lett. 2009 Dec 1;19(23):6627-31. Epub 2009 Oct 8.

    Curcumin analog cytotoxicity against breast cancer cells: exploitation of a redox-dependent mechanism.

    Sun A, Lu YJ, Hu H, Shoji M, Liotta DC, Snyder JP.

    Source

    Department of Chemistry, Emory University, Atlanta, GA 30322, United States. asun2@emory.edu

    Abstract

    A series of novel curcumin analogs, symmetrical dienones, were previously shown to possess cytotoxic, anti-angiogenic and anti-tumor activities. Analogs 1 (EF24) and 2 (EF31) share the dienone scaffold and serve as Michael acceptors. We propose that the anti-cancer effects of 1 and 2 are mediated in part by redox-mediated induction of apoptosis. In order to support this concept, 1 and 2 were treated with L-glutathione (GSH) and cysteine-containing dipeptides under mild conditions to form colorless water-soluble adducts, which were identified by LC/MS. Comparison of the cytotoxic action of 1, 2 and the corresponding conjugates, 1-(GSH)(2) and 2-(GSH)(2), illustrated that the two classes of compounds exhibit essentially identical cell killing capabilities. Compared with the yellow, somewhat light sensitive and nearly water insoluble compounds 1 and 2, the glutathione conjugates represent a promising new series of stable and soluble anti-tumor pro-drugs.

    PMID:
    19854644
    [PubMed - indexed for MEDLINE]
    PMCID: PMC2791955
    Free PMC Article

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