中山醫學大學機構典藏 CSMUIR:Item 310902500/11280
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    题名: Selaginella tamariscina Attenuates Metastasis via Akt Pathways in Oral Cancer Cells
    作者: Yang, Jia-Sin
    Lin, Chiao-Wen
    Hsin, Chung-Han
    Hsieh, Ming-Ju
    Chang, Yu-Chao
    贡献者: 中山醫學大學
    日期: 2013
    上传时间: 2015-07-15T05:53:07Z (UTC)
    ISSN: 1932-6203
    摘要: Background

    Crude extracts of Selaginella tamariscina, an oriental medicinal herb, have been evidenced to treat several human diseases. This study investigated the mechanisms by which Selaginella tamariscina inhibits the invasiveness of human oral squamous-cell carcinoma (OSCC) HSC-3 cells.

    Methodology/Principal Findings

    Herein, we demonstrate that Selaginella tamariscina attenuated HSC-3 cell migration and invasion in a dose-dependent manner. The anti-metastatic activities of Selaginella tamariscina occurred at least partially because of the down-regulation of matrix metalloproteinases (MMP)-2 and MMP-9 gelatinase activity and the down-regulation of protein expression. The expression and function of both MMP-2 and MMP-9 were regulated by Selaginella tamariscina at a transcriptional level, as shown by quantitative real-time PCR and reporter assays. Chromatin immunoprecipitation (ChIP) data further indicated that binding of the cAMP response element-binding (CREB) protein and activating protein-1 (AP-1) to the MMP-2 promoter diminished at the highest dosage level of Selaginella tamariscina. The DNA-binding activity of specificity protein 1 (SP-1) to the MMP-9 promoter was also suppressed at the same concentration. Selaginella tamariscina did not affect the mitogen-activated protein kinase signaling pathway, but did inhibit the effects of gelatinase by reducing the activation of serine–threonine kinase Akt.

    Conclusions

    These results demonstrate that Selaginella tamariscina may be a potent adjuvant therapeutic agent in the prevention of oral cancer.
    URI: https://ir.csmu.edu.tw:8080/ir/handle/310902500/11280
    http://dx.doi.org/10.1371/journal.pone.0068035
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