OBJECTIVES: To evaluate the expression of phosphorylated mammalian target of rapamycin (p-mTOR) and phosphatase and tensin homolog deleted on chromosome TEN (PTEN) in oral squamous cell carcinomas (OSCCs) and relate them with clinicopathologic characteristics and outcome. STUDY DESIGN: We analyzed p-mTOR and PTEN protein expression by immunohistochemistry in 72 OSCCs. Multivariate analysis was conducted to examine their role in survival. RESULTS: p-mTOR expression was observed in 46 (63.9%) cancers and PTEN expression was absent in 22 (30.6%). An adverse independent prognostic value for high p-mTOR expression was found (P = .043) as well as for advanced tumor stage (P = .010) in patients' overall survival (OS). For disease-free survival (DFS), only advanced tumor stage (P = .001) presented an adverse independent prognostic value. CONCLUSIONS: The effect of p-mTOR in OS of OSCC suggests that this marker may serve as a reliable biological marker to identify high-risk subgroups and as a guide to therapy. Furthermore, the high expression of p-mTOR suggests that this protein may be a promising therapeutic target in OSCC.
OBJECTIVES: To evaluate the expression of phosphorylated mammalian target of rapamycin (p-mTOR) and phosphatase and tensin homolog deleted on chromosome TEN (PTEN) in oral squamous cell carcinomas (OSCCs) and relate them with clinicopathologic characteristics and outcome. STUDY DESIGN: We analyzed p-mTOR and PTEN protein expression by immunohistochemistry in 72 OSCCs. Multivariate analysis was conducted to examine their role in survival. RESULTS: p-mTOR expression was observed in 46 (63.9%) cancers and PTEN expression was absent in 22 (30.6%). An adverse independent prognostic value for high p-mTOR expression was found (P = .043) as well as for advanced tumor stage (P = .010) in patients' overall survival (OS). For disease-free survival (DFS), only advanced tumor stage (P = .001) presented an adverse independent prognostic value. CONCLUSIONS: The effect of p-mTOR in OS of OSCC suggests that this marker may serve as a reliable biological marker to identify high-risk subgroups and as a guide to therapy. Furthermore, the high expression of p-mTOR suggests that this protein may be a promising therapeutic target in OSCC.
Authors: Anna Starzyńska; Aleksandra Sejda; Paulina Adamska; Giulia Marvaso; Monika Sakowicz-Burkiewicz; Łukasz Adamski; Barbara A Jereczek-Fossa Journal: Arch Med Sci Date: 2020-11-13 Impact factor: 3.318
Authors: Andrew T Turk; Dario Garcia-Carracedo; David T Kent; Elizabeth Philipone; Juana Maria Garcia-Pedrero; Salvatore M Caruana; Lanny G Close; Gloria H Su Journal: Genes Dis Date: 2020-12-13
Authors: Luís Silva Monteiro; Maria Leonor Delgado; Sara Ricardo; Fernanda Garcez; Barbas do Amaral; José Júlio Pacheco; Carlos Lopes; Hassan Bousbaa Journal: Biomed Res Int Date: 2014-05-21 Impact factor: 3.411