Up-regulation of 14-3-3sigma (Stratifin) is associated with high-grade CIN and high-risk human papillomavirus (HPV) at baseline but does not predict outcomes of HR-HPV infections or incident CIN in the LAMS study

• Autor(a) principal: Syrjänen, Stina
• Data de Publicação: 2010
• Outros Autores: Naud, Paulo, Sarian, Luis, Derchain, Sophie, Roteli-Martins, Cecilia, Longatto, Adhemar, Tatti, Silvio, Branca, Margerita, Erzen, Mojca, Hammes, Luciano S, Costa, Silvano, Syrjänen, Kari
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/1822/67567
• topic: 14-3-3 Proteins; Alphapapillomavirus; Biomarkers, Tumor; Biopsy; Cervical Intraepithelial Neoplasia; Exonucleases; Exoribonucleases; Female; Humans; Multicenter Studies as Topic; Neoplasm Proteins; Papillomavirus Infections; Treatment Outcome; Up-Regulation; High-risk human papillomavirus; Stratifin; 14-3-3σ; Cell cycle control; Inactivation; Overexpression; Epigenetic; Viral outcomes; Disease progression; Longitudinal predictive values; Surrogate end points; 14-3-3 sigma; Science & Technology

To assess whether the potentially high-risk (HR) human papillomavirus (HPV)-related up-regulation of 14-3-3sigma (stratifin) has implications in the outcome of HPV infections or cervical intraepithelial neoplasia (CIN) lesions, cervical biopsy specimens from 225 women in the Latin American Screening Study were analyzed for 14-3-3sigma expression using immunohistochemical analysis. We assessed its associations with CIN grade and HR HPV at baseline and value in predicting outcomes of HR-HPV infections and the development of incident CIN 1+ and CIN 2+. Expression of 14-3-3sigma increased in parallel with the lesion grade. Up-regulation was also significantly related to HR-HPV detection (P = .004; odds ratio, 2.71; 95% confidence interval, 1.37-5.35) and showed a linear relationship to HR-HPV loads (P = .003). 14-3-3sigma expression was of no value in predicting the outcomes (incident, persistent, clearance) of HR-HPV infections or incident CIN 1+ and CIN 2+. 14-3-3sigma is not inactivated in cervical carcinoma and CIN but is up-regulated on transition from CIN 2 to CIN 3. Its normal functions in controlling G(1)/S and G(2)/M checkpoints are being bypassed by HR HPV.