Authors: ChiSheng Chien KunHung Shen JauShyang Huang ShianChin Ko YuanWei Shih
Publish Date: 2009/07/26
Volume: 333, Issue: 1-2, Pages: 169-
Abstract
Fisetin 33′4′7tetrahydroxyflavone a naturally occurring flavonoid has been reported to possess some anticancer and antiinflammation capabilities In this study fisetin has exhibited inhibitory effects on the adhesion migration and invasion ability of a highly metastatic PC3 cells under noncytotoxic concentrations Gelatin zymography assay showed that fisetin inhibited the matrix metalloproteinase2 MMP2 and matrix metalloproteinase9 MMP9 activities Our result also showed that fisetin could inhibit the phosphorylation of cJun Nterminal kinase 1 and 2 JNK1/2 and Akt Moreover fisetin significantly decreased the nuclear levels of nuclear factor kappa B NFκB cFos and cJun and the binding abilities of NFκB and activator protein1 AP1 Also the results showed that the protein and mRNA levels of MMP2 and MMP9 were significantly reduced by Western blot and semiquantitative RTPCR Further treating specific inhibitors for PI3K Wortmannin or JNK SP600125 to PC3 cells could reduce the protein expressions of MMP2 and MMP9 These results showed fisetin could inhibit the metastatic ability of PC3 by reducing MMP2 and MMP9 expressions through suppressing phosphoinositide 3kinase/Akt PI3K/Akt and JNK signaling pathways This suggested fisetin can serve as a potential candidate for treating cancer metastasis
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