miR-34a and miR-125b Expression in HPV Infection and Cervical Cancer Development

Biomed Res Int. 2015:2015:304584. doi: 10.1155/2015/304584. Epub 2015 Jun 9.

Abstract

We aimed to characterize miR-125b and miR-34a expression in 114 women with different cervical lesions: normal epithelium with (n = 20) and without (n = 29) HPV infection; LSIL (n = 28); HSIL (n = 29); and ICC (n = 8). miRNA expression analysis was performed by comparing the distinct groups with the reference group (women with normal epithelium without HPV). For miR-125b, we observed a twofold (2(-ΔΔCt) = 2.11; P = 0.038) increased expression among women with normal epithelium with HPV infection and a trend of downregulation in different cervical lesions including an 80% reduction (2(-ΔΔCt) = 0.21; P = 0.004) in ICC. Similarly, miR-34a expression analysis revealed an increased expression (2(-ΔΔCt) = 1.69; P = 0.049) among women with normal cervix and HPV infection, and despite no significant correlation with cervical lesions, its expression was increased by twofold (2(-ΔΔCt) = 2.08; P = 0.042) in ICC. Moreover, miR-125b levels were able to predict invasive cancers with 88% sensitivity and 69% specificity. Results showed that while miR-34a expression seems to be correlated with invasive cervical cancer, miR-125b expression is significantly changed within the different cervical lesions and their levels should be further investigated as possible predictive/prognostic biomarkers using a noninvasive approach.

Publication types

  • Randomized Controlled Trial

MeSH terms

  • Adult
  • Female
  • Gene Expression Regulation, Neoplastic
  • Humans
  • MicroRNAs / biosynthesis*
  • Middle Aged
  • Neoplasm Invasiveness
  • Papillomavirus Infections / metabolism*
  • Papillomavirus Infections / pathology
  • RNA, Neoplasm / biosynthesis*
  • Uterine Cervical Neoplasms / metabolism*
  • Uterine Cervical Neoplasms / pathology

Substances

  • MIRN125 microRNA, human
  • MIRN34 microRNA, human
  • MicroRNAs
  • RNA, Neoplasm