Small interfering RNA targeting to hepatitis B virus X gene and 5-aza-2'-deoxycytidineon inhibited growth of the subcutaneous implanted tumor of hepatocellular carcinoma in nude mice / 中华实验和临床病毒学杂志
Chinese Journal of Experimental and Clinical Virology
;
(6): 362-365, 2012.
Artigo
em Chinês
| WPRIM
| ID: wpr-305034
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the anti-tumor effect of small interfering RNA targeting to HBV X gene (X-siRNA) and 5-aza-2'-deoxycytidine (5-aza-dC) on HBV-related hepatocellular carcinoma.</p><p><b>METHODS</b>X-siRNA and control siRNA were synthesized. HepG2/GFP-HBx cells were treated with X-siRNA, and the levels of HBV X mRNA were detected by semi-quantitative reverse transcription polymerase chain reaction (RT-PCR). Nude mice were inoculated with HepG2/GFP and HepG2/GFP-HBx cells subcutaneous respectively to establish implant models of hepatocellular carcinoma, and were treated with X-siRNA, 5-aza-dC alone or in combination, and tumor growth was observed. The methylation of p16 gene promoter was detected by methylation specific polymerase chain reaction (MSP).</p><p><b>RESULTS</b>RT-PCR showed the expression of HBV X mRNA in HepG2/GFP-HBx cells was inhibited markedly by X-siRNA. The nude mice experiment showed that the gross tumor volume was much bigger in HepG2/GFP-HBx group than that in HepG2/GFP group (P < 0.05). The growth of palpable tumors in X-siRNA or 5-aza-dC treatment group notably decreased (P < 0.05). MSP analysis showed that p16 gene methylation was observed in HepG2/ GFP-HBx-caused palpable tumors, while no methylation was detected in HepG2/GFP group. However, after treatment with X-siRNA or 5-aza-dC, p16 gene methylation reduced.</p><p><b>CONCLUSIONS</b>HBV X-siRNA and methylation inhibitor can inhibit the growth of hepatoma cells via reversing p16 methylation.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Farmacologia
/
Azacitidina
/
Terapêutica
/
Transativadores
/
Metilação de DNA
/
Genes p16
/
RNA Interferente Pequeno
/
Células Hep G2
/
Genética
/
Neoplasias Hepáticas Experimentais
Tipo de estudo:
Estudo prognóstico
Limite:
Animais
/
Humanos
Idioma:
Chinês
Revista:
Chinese Journal of Experimental and Clinical Virology
Ano de publicação:
2012
Tipo de documento:
Artigo
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