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  • Title: Isoegomaketone induces apoptosis through caspase-dependent and caspase-independent pathways in human DLD1 cells.
    Author: Cho BO, Jin CH, Park YD, Ryu HW, Byun MW, Seo KI, Jeong IY.
    Journal: Biosci Biotechnol Biochem; 2011; 75(7):1306-11. PubMed ID: 21737934.
    Abstract:
    Isoegomaketone (IK) is an essential oil component of Perilla frutescens (L.), but the mechanism by which IK induces apoptosis has never been studied. The purpose of this study was to elucidate the IK-induced apoptotic pathway in DLD1 human colon cancer cells. We observed that IK treatment over 24 h significantly inhibited cell viability in a dose-dependent manner. We also found that IK triggered cleavage of PARP. Moreover, IK treatment resulted in cleavage of caspase-8, -9, and -3 in a dose- and time-dependent manner. IK treatment also resulted in cleavage of Bid and translocation of Bax, and triggered the release of cytochrome c from the mitochondria to the cytoplasm. Furthermore, it resulted in the translocation of apoptosis inducing factor (AIF), a caspase-independent mitochondrial apoptosis factor, from the mitochondria into the nucleus. Overall, these results suggest that IK induces apoptosis through caspase-dependent and capase-independent pathways in DLD1 cells.
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