Association between high miR-211 microRNA expression and the poor prognosis of oral carcinoma

J Dent Res. 2008 Nov;87(11):1063-8. doi: 10.1177/154405910808701116.

Abstract

MicroRNAs (miRNAs) are non-coding RNAs that play roles in gene silencing and may be involved in tumorigenesis. miR-211 was mapped to chromosome 15q13, a locus frequently altered in cancers. The role of miR-211 in carcinogenesis has not been clearly defined, however. This study investigated the pathogenetic implications of miR-211 in oral carcinogenesis. An association was found between higher miR-211 expression and the most advanced nodal metastasis, vascular invasion, and poor prognosis of oral carcinoma. The function of enforced miR-211 expression in oral carcinoma cells was confirmed by the repression of LacZ in a reporter plasmid via miR-211 targeting. Enforced miR-211 expression significantly increased the proliferation, migration, and anchorage-independent colony formation of oral carcinoma cells, while it enhanced the tumorigenicity of only SAS high-grade oral carcinoma cells, but not OECM-1 non-tumorigenic cells. The findings suggest that high miR-211 expression may be associated with the progression of oral carcinoma and poor patient outcomes.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carcinoma, Squamous Cell / genetics*
  • Carcinoma, Squamous Cell / metabolism
  • Case-Control Studies
  • Humans
  • Kaplan-Meier Estimate
  • Lymphatic Metastasis
  • MicroRNAs / biosynthesis*
  • Mouth Neoplasms / genetics*
  • Mouth Neoplasms / metabolism
  • Neovascularization, Pathologic
  • Phenotype
  • Precancerous Conditions / genetics*
  • Precancerous Conditions / metabolism
  • Prognosis
  • Reverse Transcriptase Polymerase Chain Reaction
  • Transfection

Substances

  • MIRN221 microRNA, human
  • MicroRNAs