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  • Title: Antitumor progression potential of morusin suppressing STAT3 and NFκB in human hepatoma SK-Hep1 cells.
    Author: Lin WL, Lai DY, Lee YJ, Chen NF, Tseng TH.
    Journal: Toxicol Lett; 2015 Jan 22; 232(2):490-8. PubMed ID: 25476160.
    Abstract:
    Morusin is a prenylated flavonoid that has been isolated from the root bark of the mulberry tree (Morus species, Moraceae), a Chinese traditional medicine. It has been synthesized by our laboratory from commercially available phloroglucinol, and has demonstrated to possess antitumor effects of cell lines including A549, MCF-7, and MDA-MB-231. In this study, at non-cytotoxic concentrations, morusin altered invasive morphology and suppressed cell-matrix adhesion, cell motility and cell invasion in SK-Hep1 cells. Morusin also increased the expression of E-cadherin, an epithelial cell junction protein, decreased the expression of vimentin, a mesecnchymal marker, and α2-, α6-, β1- integrin, which regulated cancer attachment and migration. In addition, morusin reduced the activity of matrix metalloproteinase-2 and 9 (MMP-2 and MMP-9), which were involved in extracellular matrix (ECM) degradation and promoting cancer cell invasion. Furthermore, morusin suppressed the signal transducer and activator of transcription 3 (STAT3) and nuclear factor-κB (NFκB) signaling pathways, which modulate the protein expression involved in the invasion process. Finally, morusin decreased the lung colonization of the SK-Hep1 cells in the nude mice. These results indicate morusin possesses antitumor progression potential through suppressing STAT3 and NFκB.
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