Effects of PTEN over-expression on phosphatidyl inositol 3-kinase/protein kinase B signal pathway in ovarian epithelial cancer cells
10.3760/cma.j.issn.0529-567x.2010.09.010
- VernacularTitle:稳定转染PTEN基因后对卵巢上皮性癌细胞磷酸酰肌醇3激酶/蛋白激酶B信号传导通路的影响
- Author:
Yongning ZHAI
;
Lingling XU
;
Yue SHEN
;
Hong XIA
;
Yufei SHEN
- Publication Type:Journal Article
- Keywords:
Ovarian neoplasms;
PTEN phosphohydrolase;
1-Phosphatidylinositol 3-kinase;
Proto-oncogene proteins c-akt;
Signal transduction
- From:
Chinese Journal of Obstetrics and Gynecology
2010;45(9):682-685
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the effect of exogenous wild PTEN gene stable transfected into human ovarian cancer cell line HO-8910 on phosphatidyl inositol 3-kinase( PI3K)/protein kinase B (Akt)siganal pathway and cells proliferation. Methods Wild-type PTEN recombinant eukaryotic expression plasmid was constructed and then was transfected into HO-8910 cells by lipofectamine 2000. The expression of PTEN, Akt1, Akt2, PI3K mRNA and protein of PTEN were tested by reverse transcription( RT)-PCR and Western blot. The proliferation of HO-8910 after wild PTEN gene transfected was measured by methyl thiazolyl tetrazolium(MTT). Results Wild-type PTEN gene was successfully transfected into HO-8910 cells. The results of RT-PCR and western bolt showed that there were the significant expression high level of PTEN mRNA and protein after infected by wild-PTEN plasmid than those in the control[ ( 17 372 ±23)vs.(39±1 )vs. (78 ±4)copies/ml,P ＜0. 05 ]. While the expression of mRNA of Akt1, Akt2 and PI3K were decreased clearly than those in the control [ (28 ± 2 ) vs. ( 115 ± 5 ), (7 ± 1 ) vs. ( 18 ± 2), (61 ± 2 ) vs.(84 ± 2)copies/ml , all P ＜ 0. 05 ]. The proliferation rate of HO-8910 cells was obviously slower than those in the control (90 158 ±47 vs. 148 251 ±65 vs. 250 115 ±62, P＜0.05). Conclusion Transfection of PTEN may increase the expression of PTEN and inhibit the proliferation of HO-8910 cells, in which PI3K/ Akt siganal pathway is inhibit significantly.
