US EPA

1975471 

Journal Article 

[Expression of c-jun and c-fos oncogene in medulloblastoma and its clinical significance] 

Li, YY; Mao, BY; Dong, XH 

2004 

0 

Zhonghua Waike Zazhi
ISSN: 0529-5815 

42 

4 

213-215 

Chinese 

15062038 

OBJECTIVE: To study the potential relationship between the expressions of c-jun and c-fos oncogenes and the prognosis of medulloblastoma.

METHODS: The specimens from 70 cases of medulloblastoma of the posterior fossa and 10 cases of normal cerebellar tissues were collected to determine c-jun and c-fos expressions by immunohistochemical staining in formalin fixed paraffin-embedded sections.

RESULTS: (1) It showed that c-fos and c-jun protein expression was negative in 10 normal cerebellar tissue, while positive c-fos, c-jun immunoreactivity was found in 70 medulloblastoma specimens. The positive rate of c-jun and c-fos was 80% and 77%, respectively. There was high expression of c-jun and c-fos protein in medulloblastoma tissues. (2) There were positive correlations and strong co-operativity between c-jun and c-fos expression (r = 0.493, P < 0.01). (3) Correlative analysis indicated that expression of c-jun, c-fos were significantly correlated with survival time (c-jun: r = -0.447, P < 0.01; c-fos: r = -0.590, P < 0.01). The higher the expression level of c-jun and c-fos protein was, the worse the prognosis was in medulloblastoma patients.

CONCLUSIONS: High expression of c-jun and c-fos protein could be noted in medulloblastoma tissues. The two transcription factors show positive correlation and strong co-existence between c-jun and c-fos expressions. The expression levels of c-jun as well as c-fos are negatively correlated with the mortality rate and life expectancy of patients with medulloblastoma. In addition, the co-expression of c-jun and c-fos could serve as an indicator for judging the prognosis of medulloblastoma. 

Adolescent; Child, Preschool; Immunohistochemistry; Medulloblastoma/metabolism/mortality/ pathology; Proto-Oncogene Proteins c-fos/ analysis; Proto-Oncogene Proteins c-jun/ analysis; Survival Analysis; Survival Rate