The mitogen-activated protein kinase phosphatase-1 (MKP-1) gene is a potential methylation biomarker for malignancy of breast cancer
Experimental & Molecular Medicine
;
: 356-362, 2012.
Artigo
em Inglês
| WPRIM
| ID: wpr-153071
ABSTRACT
The mitogen-activated protein kinase (MAPK) phosphatase-1 (MKP-1) belongs to the MAPK cascades which are central to cell proliferation and apoptosis. The carcinogenic role of MKP-1 has been reported in many types of cancer but it has rarely been investigated in breast cancer. The present study was designed to evaluate the MKP-1 mRNA expression and its possible regulation by methylation of MKP-1 promoter in the model of several breast cancer cell lines and tissues as well as controls. Our data demonstrate MKP-1 mRNA expression significantly decreased in five breast cancer cell lines compared to breast controls (P < 0.01). Using the methylation-specific PCR (MSP) analysis, the unmethylated reaction (U) is dominant in both normal cell lines and benign breast tumors (100% vs. 86.2%), whereas the methylated reaction (M) is dominant in both breast cancer cell lines and invasive breast tumors (100% vs. 57.2%). In terms of methylation ratio (M/M+U), methylation level in MKP-1 promoter is significantly higher in the invasive breast tumor tissues (n = 152) than in benign breast tumor tissues (n = 29) (P < 0.0001). Assessing the methylation ratio of the promoter of MKP-1 gene to diagnose the breast malignancy (invasive vs. benign), the area under the receiver-operating characteristic (ROC) curve was 0.809 (95% CI 0.711-0.906, P < 0.001). The best performance for this prediction has a sensitivity of 76.32% and a specificity of 82.76% at the cutoff value of 0.38. Taken together, we firstly demonstrated that the promoter methylation of MKP-1 gene is a potential breast cancer biomarker for breast malignancy.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Neoplasias da Mama
/
Biomarcadores Tumorais
/
Regulação Neoplásica da Expressão Gênica
/
Curva ROC
/
Sensibilidade e Especificidade
/
Regiões Promotoras Genéticas
/
Metilação de DNA
/
Linhagem Celular Tumoral
/
Fosfatase 1 de Especificidade Dupla
Tipo de estudo:
Estudo diagnóstico
/
Estudo prognóstico
Limite:
Feminino
/
Humanos
Idioma:
Inglês
Revista:
Experimental & Molecular Medicine
Ano de publicação:
2012
Tipo de documento:
Artigo
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