Immunohistochemical Study of p53 and p21Waf1/Cip1 Expression in Several Epithelial Tumors of the Skin / 대한피부과학회지
Korean Journal of Dermatology
;
: 788-795, 2005.
Artigo
em Coreano
| WPRIM
| ID: wpr-190780
ABSTRACT
BACKGROUND:
The p53 gene is one of a family of tumor suppressor genes that have been implicated in the genesis of a wide variety of malignant neoplasms including several epithelial tumors of the skin, and its role in oncogenesis and tumor progression is thought to be of importance. p21Waf1/Cip1 is thought to mediate p53 signaling, induced by a DNA-damaged status, to arrest the cell cycle. The mechanism that controls p21Waf1/Cip1 expression has not been clearly elucidated yet.OBJECTIVE:
To evaluate the expression pattern of p53 and p21Waf1/Cip1, and their correlations in several epithelial tumors of the skin.METHOD:
We investigated the expression of p53 and p21Waf1/Cip1 proteins by a immunohistoc- hemical method on the formalin-fixed, paraffin-embedded tissue specimens of squamous cell carcinoma (SCC), basal cell carcinoma (BCC), Bowen's disease, actinic keratosis (AK) and porokeratosis.RESULTS:
p21Waf1/Cip1 was expressed in 50% (5/10) of SCC, 10% (1/10) of BCC, 70% (7/10) of Bowen's disease, 80% (8/10) of AK, and 40% (4/10) of porokeratosis. An increased expression of p53 was found 90% (9/10) of SCC, 70% (7/10) of BCC, 60% (6/10) of Bowen's disease, 50% (5/10) of AK, and 40% (4/10) of porokeratosis. The expression level of p53 had a significantly positive correlation with the expression level of p21Waf1/Cip1 in Bowen's disease (p = 0.045). There was no correlation observed between the expression levels of these two markers in the other diseases mentioned above (p >0.05).CONCLUSION:
This data suggest that decreased p21Waf1/Cip1 expression may have a role in epithelial tumors of the skin. However, our present study indicates that there are weak interrelationship between p53, p21Waf1/Cip1, and p53-independent pathways of p21Waf1/Cip1 induction in the skin. The mechanism of how they interact to promote tumorigenesis and its prognostic values in epithelial tumors of the skin remain to be elucidated.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Pele
/
Doença de Bowen
/
Carcinoma Basocelular
/
Carcinoma de Células Escamosas
/
Ciclo Celular
/
Genes p53
/
Genes Supressores de Tumor
/
Poroceratose
/
Ceratose Actínica
/
Carcinogênese
Limite:
Humanos
Idioma:
Coreano
Revista:
Korean Journal of Dermatology
Ano de publicação:
2005
Tipo de documento:
Artigo
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