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- W1995706613 abstract "Fucoidan, a sulfated polysaccaride extracted from brown seaweeds, has anticoagulant and antithrombotic activities. Unlike heparin, fucoidan is known to exhibit anticarcinogenic activities. However, the underlying molecular mechanisms of the chemopreventive activities of fucoidan are not understood. Here we report that fucoidan from L. cichorioides inhibited the epidermal growth factor (EGF) or 12‐O‐tetradecanoylphorbol‐13‐acetate (TPA)‐induced neoplastic cell transformation, but had less cytotoxic effects on JB6 mouse epidermal cells. The EGF‐induced phosphorylation of extracellular signal‐regulated kinases 1/2 and c‐Jun N‐terminal kinases, and c‐Jun was inhibited by fucoidan, resulting from the inhibition of phosphorylation of epidermal growth factor receptor (EGFR). Fucoidan dose‐dependently attenuated the c‐fos or c‐jun transcriptional activity, and thereby inhibited the associated AP‐1 transactivation activity. In vitro binding assay revealed that fucoidan directly interacted with EGF, suggested that anti‐tumor promoting effect of fucoidan might be due to preventing the binding of EGF to its cell surface receptor (EGFR). These findings are the first to reveal a molecular basis for the anticarcinogenic action of fucoidan and may partially account for the reported chemopreventive effects of brown seaweeds. Citation Information: Cancer Res 2009;69(23 Suppl):A47." @default.
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- W1995706613 date "2009-12-01" @default.
- W1995706613 modified "2023-09-25" @default.
- W1995706613 title "Abstract A47: Fucoidan fromLaminaria cichorioidesinhibits AP‐1 transactivation and cell transformation in mouse epidermal JB6 cells" @default.
- W1995706613 doi "https://doi.org/10.1158/0008-5472.fbcr09-a47" @default.
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