Targeting of miR-31/96/182 to the Numb gene during head and neck oncogenesis

Chung-Hsien Chou1, Hsi-Feng Tu2, Shou-Yen Kao2,3

  • 1Institute of Oral Biology, School of Dentistry, National Yang-Ming University, Taipei, Taiwan.

Head & Neck
|January 23, 2018
PubMed
Abstract

Insights

MicroRNAs miR-31, miR-96, and miR-182 are upregulated in head and neck squamous cell carcinoma (HNSCC). These miRNAs co-target Numb, influencing cancer cell migration and invasion.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • MicroRNAs (miRNAs) are critical regulators in head and neck squamous cell carcinoma (HNSCC).
  • The specific roles of miR-31, miR-96, and miR-182 in HNSCC pathogenesis require elucidation.
  • Investigating the targeting of Numb by these miRNAs is essential for understanding HNSCC progression.

Purpose of the Study:

  • To determine the expression levels of miR-31, miR-96, and miR-182 in HNSCC tissues.
  • To investigate the direct targeting of the Numb gene by miR-31, miR-96, and miR-182.
  • To analyze the functional impact of these miRNAs on HNSCC cell behavior.

Main Methods:

  • Analysis of miR-31, miR-96, and miR-182 expression in HNSCC tumor tissues.
  • Utilizing reporter assays and knockdown experiments in HNSCC cell lines.
  • Performing oncogenic and expression analyses to assess miRNA function.

Main Results:

  • Concordant upregulation of miR-31, miR-96, and miR-182 was observed in HNSCC tumor tissues, correlating with advanced tumor stages.
  • These miRNAs were found to directly target the 3' untranslated region (UTR) of the Numb gene.
  • Exogenous expression of miR-31/96/182 enhanced HNSCC cell migration and invasion, effects reversed by Numb expression.

Conclusions:

  • miR-31, miR-96, and miR-182 are frequently and coordinately upregulated in HNSCC.
  • These miRNAs act as oncogenes by co-targeting Numb, thereby promoting HNSCC progression.
  • The findings highlight a novel miRNA-Numb axis in HNSCC development.

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