Infrequent amplification of JUN in hepatocellular carcinoma.
Anticancer Res
; 29(12): 4989-94, 2009 Dec.
Article
em En
| MEDLINE
| ID: mdl-20044606
ABSTRACT
AIM:
To determine whether JUN (the oncogene encoding c-Jun protein) is amplified and overexpressed in hepatocellular carcinoma (HCC). MATERIALS ANDMETHODS:
DNA copy number aberrations were investigated using a high-density oligonucleotide microarray. DNA copy numbers were determined by fluorescence in situ hybridization. Genomic DNA and mRNA were quantified using real-time quantitative PCR.RESULTS:
A novel amplification was found at the chromosomal region 1p32-31 in a JHH-2 HCC cell line within which JUN is amplified and overexpressed. However, no copy number gain of JUN (>2-fold) was observed in 34 primary HCC tumors. Rather, a loss of JUN (<0.5-fold) was seen in 13 (38%) out of the 34 tumors and expression of JUN was significantly lower in 26 (70%) out of the 37 HCC tumors compared with their nontumorous counterparts.CONCLUSION:
Although JUN was amplified and overexpressed in JHH-2 HCC cells, amplification and overexpression of JUN may be rare in primary HCCs.
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Base de dados:
MEDLINE
Assunto principal:
Amplificação de Genes
/
Aberrações Cromossômicas
/
Genes jun
/
Carcinoma Hepatocelular
/
Polimorfismo de Nucleotídeo Único
/
Neoplasias Hepáticas
Limite:
Humans
Idioma:
En
Revista:
Anticancer Res
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Japão