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Altered microRNA expression profile with miR-27b down-regulation correlated with disease activity of oral lichen

W-Y Zhang1, W Liu, Y-M Zhou

  • 1Department of Oral Mucosal Diseases, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China.

Oral Diseases
|November 15, 2011
PubMed
Abstract

Insights

MicroRNAs (miRNAs) are implicated in oral lichen planus (OLP) pathogenesis. This study found miR-27b significantly down-regulated in OLP tissues, suggesting its potential as a novel biomarker for this inflammatory condition.

Area of Science:

  • Molecular Biology
  • Immunology
  • Oral Pathology

Background:

  • MicroRNAs (miRNAs) are increasingly recognized for their role in inflammatory and autoimmune diseases.
  • Oral lichen planus (OLP) is a chronic inflammatory condition affecting oral mucosa.

Purpose of the Study:

  • To investigate the miRNA expression profile in OLP patients.
  • To specifically determine the expression levels of miR-27b in OLP.

Main Methods:

  • Microarray analysis of miRNA expression in OLP (n=3) versus normal controls (n=3).
  • Real-time quantitative PCR (RT-QPCR) to assess miR-27b in OLP (n=53) and controls (n=34).
  • In situ hybridization (ISH) to localize miR-27b expression in OLP (n=15) and controls (n=12).

Main Results:

  • Microarray identified 46 differentially expressed miRNAs (8 up-regulated, 38 down-regulated).
  • RT-QPCR and ISH confirmed significant down-regulation of miR-27b in OLP tissues.
  • miR-27b expression was lower in atrophic-erosive OLP compared to reticular OLP and detected in epithelial keratinocytes.

Conclusions:

  • miRNAs, particularly miR-27b, are potentially involved in OLP pathogenesis.
  • Down-regulated miR-27b may serve as a novel candidate biomarker for OLP.
  • Further research into miRNA roles could elucidate OLP mechanisms.

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