Effect of EGFR-targeted interference RNA on apoptosis of multidrug-resistant ovarian cancer cells
10.3872/j.issn.1007-385X.2009.06.013
- VernacularTitle:靶向EGFR的干扰RNA对卵巢癌耐药细胞凋亡的影响
- Author:
Jiao ZHANG
;
Aiping CHEN
;
Yuyan QI
;
Bin WANG
- Publication Type:Journal Article
- Keywords:
ovarian neoplasms;
RNA interference;
epidermal growth factor receptor (EGFR);
cisplatin
- From:
Chinese Journal of Cancer Biotherapy
2009;16(6):619-623
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the effect of RNA-mediated interference EGFR (epidermal growth factor receptor) expression on the apoptosis of muitidrug-resisitant ovarian cancer cell line SKOV3/DDP. Methods: Small hairpin RNA (shRNA) targeting EGFR was synthesized and recombinant plasmid containing pEGFR-shRNA was constructed, pEGFR-shRNA was tansfected into SKOV3/DDP cells by liposome system, untransfected cells and SKOV3/DDP cells tansfected with nonspecific-shRNA (Ctrl-shRNA) were used as control. Expression of EGFR mRNA and protein in SKOV3/DDP cells was examined by RT-PCR and immunocytochemistry after transfection, respectively. The apopototic rates and cell cy-cles of SKOV3/DDP cells were detected by flow cytometry. Results: Compared with Ctrl-shRNA-transfected cells, the ex-pression of EGFR mRNA and protein in pEGFR-shRNA-transfected SKOV3/DDP cells was significantly inhibited. Flow cytometry results showed that cell cycle distribution in pEGFR-shRNA-transfected SKOV3/DDP cells was dramatically changed, and the apoptosis rate was significantly increased after further treatment with cisplatin for 24 h. Conclusion: EGFR-targeted interference RNA can inhibit the expression of EGFR in SKOV3/DDP cells, thereby regulating the cell cy-cle and increasing apoptosis of multidrug-resistant SKOV3/DDP cells.
