The significance of p53 immunoexpression with different clones (DO-7 and PAb-240) in oral squamous cell carcinoma.
ORL J Otorhinolaryngol Relat Spec
; 75(2): 82-90, 2013.
Article
em En
| MEDLINE
| ID: mdl-23817043
ABSTRACT
BACKGROUND/AIM:
The TP53 gene is a tumor suppressor gene. Its product is a nuclear protein that regulates cell cycle arrest, apoptosis and DNA repair. Anti-p53 clones DO-7 and PAb-240 recognize the amino acid sequences 21-25 and 213-217, respectively. This study aimed to evaluate the expression of these clones and their relationship with clinicopathological features and survival analysis in oral squamous cell carcinomas (OSCC).METHODS:
Information on 53 primary OSCC was collected at the Brazilian National Cancer Institute. An immunohistochemical method was applied to evaluate p53 expression (DO-7 and PAb-240). Their expression was analyzed quantitatively and correlated with clinicopathological features. Kaplan-Meier survival curves and log rank test were used.RESULTS:
Immunopositivity for DO-7 was present in 64% of the cases, while 58% were positive for PAb-240. There was no correlation between immunoexpression of both antibodies and clinicopathological features or survival analysis. DO-7 expression was significantly higher (p = 0.001) than that of PAb-240.CONCLUSIONS:
There were quantitative differences between the expression of the antibodies studied, which may reflect a different specificity of each one. To confirm immunohistochemical results and estimate the true prognostic role of TP53 in OSCC, it is important to perform mutation analysis.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Neoplasias Bucais
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Carcinoma de Células Escamosas
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Proteína Supressora de Tumor p53
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Anticorpos Monoclonais
Tipo de estudo:
Prognostic_studies
Limite:
Adult
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Aged
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Aged80
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article