[Discovery and verification of matrix gla protein, a TNM staging and prognosis-related biomarker for gastric cancer].
Zhonghua Bing Li Xue Za Zhi
; 39(7): 436-41, 2010 Jul.
Article
em Zh
| MEDLINE
| ID: mdl-21055170
ABSTRACT
OBJECTIVE:
To analyze microarray datasets deposited in the public database and to identify TNM associated genes in gastric cancers.METHODS:
Microarray datasets of gastric cancer were selected from GEO database. Differentially expressed genes related to TNM staging were evaluated by significant analysis of the microarray using MultiExperiment Viewer (MEV) platform. Candidate gene expressions in gastric cancer tissues and cell lines were verified by reverse transcriptase polymerase chain reaction (RT-PCR), quantitative RT-PCR, Western blot and immunohistochemistry.RESULTS:
GES4007 dataset was re-analyzed leading to the identification of 14 genes associated with TNM staging. Over-expression of matrix gla protein (MGP) was confirmed in gastric cancer cell lines and tumor tissues by quantitative RT-PCR, Western blot and immunohistochemistry. Increased MGP expression was found in 22 of 54 cases of (40.7%) gastric cancer specimens compared to the normal gastric tissues. The up-regulation of MGP mRNA expression closely correlated with TNM stage (P = 0.001) and prognosis (P = 0.006).CONCLUSIONS:
Public databases of microarray studies are the valuable resources for data mining. MGP has been identified and confirmed as a novel biomarker for the TNM stage and prognosis of gastric cancer.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Neoplasias Gástricas
/
Proteínas de Ligação ao Cálcio
/
Proteínas da Matriz Extracelular
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Análise de Sequência com Séries de Oligonucleotídeos
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Perfilação da Expressão Gênica
/
Estadiamento de Neoplasias
Tipo de estudo:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
Zh
Revista:
Zhonghua Bing Li Xue Za Zhi
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
China