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BIBTEX RIS

New variants of E6 and E7 oncogenes of human papillomavirus type 31 identified in Northeastern Brazil

2011; Elsevier BV; Volume: 123; Issue: 2 Linguagem: Inglês

10.1016/j.ygyno.2011.07.008

1095-6859

Bárbara Simas Chagas, Marcus Vinícius de Aragão Batista, Vilma Guimarães, Valdir de Queiroz Balbino, Sérgio Crovella, Antônio Carlos de Freitas,

Hepatitis B Virus Studies

We sought to characterize E6 and E7 oncogenes genetic variability of HPV-31 isolated from cervical scraping samples of Northeastern Brazilian women.E6 and E7 were amplified with specific primers, cloned and sequenced. The sequences obtained were aligned with the GenBank reference sequences with the aim of evaluating the possible genetic variants.We identified several genetic variants in E6 and E7 sequences from HPV-31 positive women. Three nucleotide changes in E6 were described for the first time in this study. Some nucleotide changes were non-synonymous substitutions.The knowledge of region/country HPV specific genetic variations is relevant to understand the epidemiology and the development of effective vaccines.