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
in Chinese
| WPRIM
| ID: wpr-293388
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>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pathology
/
Physiology
/
Recombinant Proteins
/
RNA, Messenger
/
Transfection
/
Adenoviridae
/
Blotting, Western
/
Mutagenesis, Site-Directed
/
Apoptosis
/
Colonic Neoplasms
Limits:
Humans
Language:
Chinese
Journal:
Journal of Southern Medical University
Year:
2008
Type:
Article
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