Inhibition of Hep-2 cell apoptosis after annexin A5 knockdown
10.3760/cma.j.issn.1673-0860.2014.04.013
- VernacularTitle:Annexin A5基因沉默对Hep-2细胞凋亡的影响
- Author:
Yang LIU
1
;
Xiaofang ZHOU
;
Jinsong WEN
;
Shishan DENG
;
Hai LIU
Author Information
1. 川北医学院附属医院耳鼻咽喉头颈外科
- Keywords:
Annexin A5;
Gene silencing;
Apoptosis;
Larygeal neoplasms
- From:
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
2014;49(4):326-329
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the effect of annexin A5 on the apoptosis of laryngeal cancer cells.Methods Special siRNAs were used to knock annexinA5 down in Hep-2 cell,and RT-PCR and Western blot were applied to identify the efficacy of RNA interference.The flow cytometry assay was performed to detect the Hep-2 cell apoptosis.Results RT-PCR analysis showed that the relative mRNA expression of annexin A5 in siRNA group,negative control group,Lipofectamine2000 group and blank control group were 0.70 ±0.03,1.18 ±0.05,1.17 ±0.06 and 1.23 ±0.07.The relative mRNA expression of annexin A5 in siRNA group was significantly decreased than contrast groups(t =-14.77,t =-13.23,t =-12.99,P ＜0.05).In Western blot assay,the trend of protein expression level was consistent with the mRNA expression levels of annexin A5.The relative levels of proteins in siRNA group,negative control group,Lipofectamine2000 group and blank control group were shown 1.21 ± 0.03,3.88 ± 0.06,3.87 ±0.02 and 3.95 ± 0.08.The relative protein expression of annexin A5 in siRNA group was significantly decreased than contrast groups(t =-70.34,t =-150.62,t =-56.32,P ＜0.05).At the same time in flow cytometry the apoptotic rate of siRNA group,negative control group,Lipofectamine2000 group and blank control group were 4.43％ ±0.12％,13.67％ ±0.22％,13.66％ ±0.12％ and 13.35％ ±0.13％,the difference between the siRNA group and contrast groups was statistically significant (t =-62.50,t =-14.16,t =-11.47,P ＜ 0.05).So after RNA interference,expression of annexin A5 decreased,and the results in the apoptosis inhibition of Hep-2 cell.Conclusion Annexin A5 promotes apoptosis of Hep-2 cells,and it may be a potential therapeutic target for the laryngeal cancer.
