MicroRNAs Contribute to the Anticancer Effect of 1'-Acetoxychavicol Acetate in Human Head and Neck Squamous Cell Carcinoma Cell Line HN4

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  • WANG Haibin
    Department of Oral and Maxillofacial Surgery, First Affiliated Hospital of Zhengzhou University
  • SHEN Li
    Nursing College, Zhengzhou University
  • LI Xinming
    Department of Oral and Maxillofacial Surgery, First Affiliated Hospital of Zhengzhou University
  • SUN Minglei
    Department of Oral and Maxillofacial Surgery, First Affiliated Hospital of Zhengzhou University

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1'-Acetoxychavicol acetate (ACA), extracted from rhizomes of tropical ginger, possesses antitumor properties against a wide variety of malignancies. MicroRNAs have been found to act as oncogenes and as tumor suppressor genes in the development of cancer. The purpose of this study was to investigate the miRNA involved in the molecular mechanisms of ACA action on tumor inhibition. It was found that ACA significantly inhibited the growth of human head and neck squamous cell carcinoma cell line HN4 and induced cell apoptosis. Further studies indicated that ACA downregulated the expression of miR-23a in HN4 cells. Transfection with anti-miR-23a inhibited the proliferation of HN4 cells and induced cell apoptosis. In addition, phosphatase and tensin homolog deleted on chromosome 10 (PTEN) was confirmed to be the target of miR-23a. Taken together, our findings suggest that ACA might have anticancer effects against human head and neck cancer through downregulation of miR-23a, which can repress tumor suppressor PTEN.

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