Effect of targeted magnetic nanoparticles containing 5-FU on expression of bcl-2, bax and caspase 3 in nude mice with transplanted human liver cancer.
World J Gastroenterol
; 13(23): 3171-5, 2007 Jun 21.
Article
em En
| MEDLINE
| ID: mdl-17589894
ABSTRACT
AIM:
To investigate the anti-tumor effect and mechanisms of magnetic nanoparticles targeting hepatocellular carcinoma.METHODS:
Human hepatocellular carcinoma was induced in nude mice, and the mice were randomly divided into group A receiving normal saline, group B receiving magnetic nanoparticles containing 5-fluorouracil (5-FU), group C receiving 5-FU, and group D receiving magnetic nanoparticles containing 5-FU with a magnetic field built in tumor tissues. The tumor volume was measured on the day before treatment and 1, 4, 7, 10 and 13 d after treatment. Tumor tissues were isolated for examination of the expression of bcl-2, bax and caspase 3 by immunohistochemical method, reverse transcription polymerase chain reaction and Western blotting.RESULTS:
The tumor volume was markedly lower in groups C and D than in groups A and B (group C or D vs group A or B, P<0.01). The volume was markedly lower in group D than in group C (P<0.05). The expression of protein and mRNA of bcl-2 was markedly lower in groups C and D than in groups A and B (group C or D vs group A or B, P<0.01), and was markedly lower in group D than in group C (P<0.01). The expression of bax and caspase 3 in groups C and D was significantly increased, compared with that in groups A and B (P<0.01).CONCLUSION:
The targeted magnetic nanoparticles containing 5-FU can improve the chemotherapeutic effect of 5-FU against hepatocellular carcinoma by decreasing the expression of bcl-2 gene, and increasing the expression of bax and caspase 3 genes.
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Base de dados:
MEDLINE
Assunto principal:
Proteínas Proto-Oncogênicas c-bcl-2
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Proteína X Associada a bcl-2
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Caspase 3
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Nanopartículas
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Fluoruracila
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Neoplasias Hepáticas Experimentais
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Magnetismo
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Antineoplásicos
Idioma:
En
Ano de publicação:
2007
Tipo de documento:
Article