Effect of alpha-difluoromethylornithine on growth characteristics and expression of ALT-04ag gene of human lung carcinoma cells / 中国医学科学院学报
Acta Academiae Medicinae Sinicae
;
(6): 377-380, 2002.
Article
Dans Chinois
| WPRIM
| ID: wpr-278160
ABSTRACT
<p><b>OBJECTIVE</b>To study the effect of polyamine biosynthesis inhibition on growth characteristics of human lung carcinoma cells and its correlation with the expression of human lung carcinoma associated antigen ALT-04ag gene.</p><p><b>METHODS</b>The gene expression was detected by RT-PCR and immunocytochemical tests. The cell growth characteristics were studied by cell growth curves, morphological observation, FCM analysis and DNA electrophoresis.</p><p><b>RESULTS</b>Human lung squamous carcinoma cells L78 treated with 5 mmol/L alpha-difluoromethylornithine (DFMO) for 5 days showed significant growth inhibition and apoptosis induction. The mRNA and protein expressions of ALT-04ag gene in the cells were downregulated, while these changes resulted from DFMO treatment were prevented by provision of DFMO along with exogenous putrescine.</p><p><b>CONCLUSION</b>The effect of polyamine biosynthesis inhibition induced by DFMO restrains the growth characteristics and promotes apoptosis of human lung carcinoma L78 cells, which is associated with down regulation of ALT-04ag gene expression.</p>
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Anatomopathologie
/
Pharmacologie
/
ARN messager
/
Cellules cancéreuses en culture
/
Carcinome épidermoïde
/
Régulation négative
/
Régulation de l'expression des gènes tumoraux
/
Division cellulaire
/
Eflornithine
/
Apoptose
Limites du sujet:
Humains
langue:
Chinois
Texte intégral:
Acta Academiae Medicinae Sinicae
Année:
2002
Type:
Article
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