Involvement of microRNA-4680-3p against phenytoin-induced cell proliferation inhibition in human palate cells

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  • Tsukiboshi Yosuke
    Department of Pharmacy, Gifu University of Medical Science
  • Horita Hanane
    Department of Pharmacy, Gifu University of Medical Science
  • Mikami Yurie
    Section of Oral and Maxillofacial Oncology, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University
  • Noguchi Azumi
    Department Cell Biology, Nagasaki University Graduate School of Biomedical Sciences
  • Yokota Satoshi
    Division of Cellular and Molecular Toxicology, Center for Biological Safety and Research, National Institute of Health Sciences
  • Ogata Kenichi
    Section of Oral and Maxillofacial Oncology, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University
  • Yoshioka Hiroki
    Department of Pharmacy, Gifu University of Medical Science

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  • Involvement of <i>microRNA-4680-3p</i> against phenytoin-induced cell proliferation inhibition in human palate cells

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<p>Cleft palate (CP) is one of the most common birth defects and is caused by a combination of genetic and/or environmental factors. Environmental factors such as pharmaceutical exposure in pregnant women are known to induce CP. Recently, microRNA (miRNA) was found to be affected by environmental factors. The aim of the present study was to investigate the involvement of miRNA against phenytoin (PHE)-induced inhibition of proliferation in human embryonic palatal mesenchymal (HEPM) cells. We demonstrated that PHE inhibited HEPM cell proliferation in a dose-dependent manner. We found that treatment with PHE downregulated cyclin-D1 and cyclin-E expressions in HEPM cells. Furthermore, PHE increased miR-4680-3p expression and decreased two downstream genes (ERBB2 and JADE1). Importantly, an miR-4680-3p-specific inhibitor restored HEPM cell proliferation and altered expression of ERBB2 and JADE1 in cells treated with PHE. These results suggest that PHE suppresses cell proliferation via modulation of miR-4680-3p expression.</p>

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