Molecular Biology Reports

, Volume 39, Issue 12, pp 10111–10119

Promoter hypermethylation in primary squamous cell carcinoma of the oral cavity and oropharynx: a study of a Brazilian cohort

  • Melissa de Freitas Cordeiro-Silva
  • Elaine Stur
  • Lidiane Pignaton Agostini
  • José Roberto Vasconcelos de Podestá
  • José Carlos de Oliveira
  • Mariana Silveira Soares
  • Elismauro Francisco Mendonça
  • Sônia Alves Gouvea
  • Sandra Ventorin Von Zeidler
  • Iúri Drumond Louro
Article

DOI: 10.1007/s11033-012-1885-4

Cite this article as:
de Freitas Cordeiro-Silva, M., Stur, E., Agostini, L.P. et al. Mol Biol Rep (2012) 39: 10111. doi:10.1007/s11033-012-1885-4

Abstract

Epigenetic silencing of cancer-related genes plays an important role in oral/oropharyngeal squamous cell carcinoma (OSCC). We evaluated promoter hypermethylation of 4 cancer-related genes in OSCCs of a Brazilian cohort and determined its relationship with exposure to alcohol, tobacco, HPV infection and clinicopathological parameters. CDKN2A (cyclin-dependent kinase inhibitor 2A or p16), SFN (stratifin or 14-3-3 σ), EDNRB (endothelin receptor B) and RUNX3 (runt-related transcript factor-3) had their methylation patterns evaluated by MSP analysis in OSCC tumors (n = 45). HPV detection was carried out by PCR/RFLP. Aberrant methylation was detected in 44/45 (97.8 %) OSCC; 24.4 % at CDKN2A, 77.8 % at EDNRB, 17.8 % at RUNX3 and 97.8 % at SFN gene. There was no significant association between methylation patterns and clinical parameters. HPV (subtype 16) was detected in 3 out of 45 patients (6 %). Our findings indicate that HPV infection is uncommon and methylation is frequent in Brazilian OSCCs, however, EDNRB and SFN gene methylation are not suitable OSCC biomarkers due to indistinct methylation in tumoral and normal samples. In contrast, CDKN2A and RUNX3 genes could be considered differentially methylated genes and potential tumor markers in OSCCs.

Keywords

Oral/oropharyngeal squamous cell carcinomaHypermethylationCDKN2AEDNRBRUNX3SFNHPV

Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Melissa de Freitas Cordeiro-Silva
    • 1
  • Elaine Stur
    • 1
  • Lidiane Pignaton Agostini
    • 1
  • José Roberto Vasconcelos de Podestá
    • 2
  • José Carlos de Oliveira
    • 3
  • Mariana Silveira Soares
    • 4
  • Elismauro Francisco Mendonça
    • 4
  • Sônia Alves Gouvea
    • 5
  • Sandra Ventorin Von Zeidler
    • 6
  • Iúri Drumond Louro
    • 1
  1. 1.Núcleo de Genética Humana e Molecular Departamento de Ciências BiológicasCentro de Ciências Humanas e Naturais Universidade Federal do Espírito SantoVitoriaBrazil
  2. 2.Programa de Prevenção e Detecção Precoce do Câncer BucalSetor de Cirurgia de Cabeça e Pescoço Hospital Santa Rita de CássiaVitoriaBrazil
  3. 3.Divisão de Cirurgia de Cabeça e PescoçoHospital Araújo Jorge, Associação de Combate ao Câncer de GoiásGoiâniaBrazil
  4. 4.Faculdade de OdontologiaUniversidade Federal de Goiás Campus 1, Sem Número, Praça UniversitáriaGoiâniaBrazil
  5. 5.Departamento de Ciências Fisiológicas Centro de Ciências da SaúdeUniversidade Federal do Espírito SantoVitoriaBrazil
  6. 6.Departamento de Patologia Centro de Ciências da SaúdeUniversidade Federal do Espírito SantoVitoriaBrazil