Thyroid Transcription Factor-1 (TTF-1) Expression in Human Lung Carcinomas: Its Prognostic Implication and Relationship with Expressions of p53 and Ki-67 Proteins
Journal of Korean Medical Science
;
: 494-500, 2003.
Artículo
en Inglés
| WPRIM
| ID: wpr-156013
ABSTRACT
This study was aimed to evaluate the prevalence and prognostic implication of thyroid transcription factor-1 (TTF-1) immunoreactivity in 81 human lung carcinomas, including 65 cases of non-small cell lung carcinoma (NSCLC) and 16 cases of small cell lung carcinoma (SCLC); and also to investigate its relationship with the cell proliferation and regulation by immunostaining of Ki-67 and p53 proteins, respectively. The immunohistochemical staining for TTF-1(clone 8G7G3/1) was performed and several clinicopathologic variables and the follow-up data were obtained. The immuno-staining results for TTF-1 were semiquantitatively interpreted as negative and positive. Of NSCLCs, TTF-1 is highly expressed in adenocarcinomas (76%), whereas squamous cell carcinomas revealed no immunoreactivity (0%). SCLCs showed strong TTF-1 expression (88%). In NSCLC, TTF-1 expression was inversely correlated with Ki-67 proliferative activity and independent of p53 overexpression. TTF-1(+) group tended to show better survival than TTF-1(-) group in NSCLC. Conclusively, these observations suggest that TTF-1 is a sensitive and specific diagnostic marker for pulmonary adenocarcinomas and SCLCs; that TTF-1 might have a good prognostic implication based on its inverse correlation with Ki-67 proliferative activity and tendency for better survival in NSCLC; that this cell lineage marker may play a role in the molecular pathogenesis of lung cancers at the level of transcription.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Pronóstico
/
Factores de Tiempo
/
Factores de Transcripción
/
Transcripción Genética
/
Inmunohistoquímica
/
Proteínas Nucleares
/
Adenocarcinoma
/
Biomarcadores de Tumor
/
División Celular
/
Proteína p53 Supresora de Tumor
Tipo de estudio:
Estudio diagnóstico
/
Estudio pronóstico
Límite:
Adulto
/
Anciano
/
Femenino
/
Humanos
/
Masculino
Idioma:
Inglés
Revista:
Journal of Korean Medical Science
Año:
2003
Tipo del documento:
Artículo
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