Kalopanaxsaponin A Inhibits the Invasion of Human Oral Squamous Cell Carcinoma by Reducing Metalloproteinase-9 mRNA Stability and Protein Trafficking

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概要

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• An inability to control cancer cell invasion and metastasis is the leading cause of death in patients with cancer. The present study was performed to determine the anti-invasive effect of Kalopanaxsaponin A (KPS-A) on matrix metalloproteinase-9 (MMP-9)-meidated invasion in phorbol 12-myristate 13-acetate (PMA)-stimulated human oral squamous cell carcinoma (OSCC) cells and a murine xenograft model of human OSCC. KPS-A, isolated from Kalopanax pictus, inhibited PMA-induced proliferation and invasion as well as PMA-induced MMP-9 expression and secretion at non-cytotoxic doses. KPS-A treatment reduced the stability of PMA-induced MMP-9 mRNA and inhibited the PMA-induced cytoplasmic translocation of HuR. In PMA-treated cells, KPS-A treatment resulted in the intracellular accumulation of MMP-9 and suppressed Ras-associated binding 1A (Rab1A) expression. KPS-A treatment suppressed PMA-induced phosphorylation of extracellular signal regulated kinase (ERK)1/2 and Akt. Furthermore, the oral administration of KPS-A led to substantial inhibition of tumor growth and the expression of proliferating cell nuclear antigen (PCNA), MMP-9, tissue inhibitor of metalloproteinase-1 (TIMP-1), HuR, and Rab1A in the tumor tissues of mice inoculated with YD-10B OSCC cells. Collectively, KPS-A inhibits the invasiveness of oral cancer by reducing HuR-mediated MMP-9 mRNA stability and Rab1A-mediated MMP-9 secretion via ERK1/2 and phosphatidylinositide 3-kinase (PI3K)/Akt. Therefore, KPS-A is a promising anti-invasive agent.

著者

• Chung Won-yoon

  Oral Cancer Res. Inst. Oral Sci. Res. Inst. And Brain Korea 21 Project Yonsei Univ. Coll. Of Dentist

• Park Kwang-Kyun

  Oral Cancer Research Institute, Yonsei University College of Dentistry

• Hwang Young

  Oral Cancer Research Institute, Yonsei University College of Dentistry

• Chung Won-Yoon

  Oral Cancer Research Institute, Yonsei University College of Dentistry

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• Kalopanaxsaponin A Inhibits the Invasion of Human Oral Squamous Cell Carcinoma by Reducing Metalloproteinase-9 mRNA Stability and Protein Trafficking

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