Mechanism of recombinant adenovirus-mediated mutations of hypoxia inducible factor 1alpha in modulation of cell apoptosis / 南方医科大学学报
Journal of Southern Medical University
; (12): 309-312, 2008.
Article
em Zh
| WPRIM
| ID: wpr-293388
Biblioteca responsável:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the mechanism by which recombinant adenovirus (Ad)-mediated mutations of hypoxia inducible factor 1alpha (Ad-HIF-1alpha-Ala564-Ala803) regulates cell apoptosis.</p><p><b>METHODS</b>LoVo cells were infected with recombinant Ad-HIF-1alpha-Ala564-Ala803 and control virus Ad-lacZ under normoxia condition. Real-time PCR was used to detect HIF-1alpha and p21WAF1/CIP1 mRNA expressions at different time points. Western blotting was employed to verify HIF-1alpha and p21WAF1/CIP1 protein expression. Hoechst 33342 flourescein staining was performed to observe the ratio of apoptotic LoVo cells.</p><p><b>RESULTS</b>The expression levels of HIF-1alpha mRNA and protein increased after infection with Ad-HIF-1alpha- Ala564-Ala803, accompanied by an increase in p21WAF1/CIP1 mRNA and protein expressions. The apoptotic ratio was significantly higher in LoVo cells infected with recombinant Ad-HIF-1alpha-Ala564-Ala803 (16.2%) than in the control cells (5.5%, P=0.00).</p><p><b>CONCLUSION</b>HIF-1alpha may induce cell cycle arrest by up-regulating p21WAF1/CIP1 expressions to promote LoVo cell apoptosis.</p>
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Índice:
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Assunto principal:
Patologia
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Fisiologia
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Proteínas Recombinantes
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RNA Mensageiro
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Transfecção
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Adenoviridae
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Western Blotting
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Mutagênese Sítio-Dirigida
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Apoptose
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Neoplasias do Colo
Limite:
Humans
Idioma:
Zh
Revista:
Journal of Southern Medical University
Ano de publicação:
2008
Tipo de documento:
Article