Expression of 14-3-3 sigma in pancreatic carcinoma and its clinical significance
10.3760/cma.j.issn.1007-8118.2013.12.016
- VernacularTitle:14-3-3 sigma增强胰腺癌细胞株PANC-1的增殖能力
- Author:
Jianxin JIANG
;
Zhiwen LAI
;
Yong LIU
;
Chengyi SUN
- Publication Type:Journal Article
- Keywords:
Pancreatic neoplasms;
Gene,14-3-3 sigma;
Cell proliferation
- From:
Chinese Journal of Hepatobiliary Surgery
2013;19(12):938-942
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the overexpression of the 14-3-3 sigma (14-3-3σ) gene effects proliferation in pancreatic cancer cells.Methods The 14-3-3σ protein level in 46 pancreatic cancers and 9 normal pancreases specimens were analyzed by immunohistochemistry.The mRNA and protein expression of 14-3-3σ in pancreatic carcinoma cell lines (BxPC3,CAPAN-1,PANC-1,AsPC-1,SW1990,MiaPaCa-2 and CFPAC-1) were detected by RT-qPCR and Western blot respectively.A recombinant plasmid of pEGFP-14-3-3σ was constructed and transfected into the pancreatic cancer cell PANC-1 by liposome,and the expression of 14-3-3σ was detected by Western blot and real time fluorescence quantitative PCR.Cell proliferation activity was determined by MTS assay.Results The 14-3-3σ protein level was higher in pancreatic cancer tissue than in normal pancreatic tissue.mRNA and protein expression of 14-3-3σ was highest in BxPC3,high in AsPC-1,SW1990 and CFPAC-1,low in PANC-1 and Capan-1,and lowest in MiaPaCa-2.The successfully constructed pEGFP-14-3-3σ was confirmed by RT-qPCR and Western blot.MTS assay showed cell proliferation activity was significantly enhanced by overexpression of the 14-3-3σ gene compared to negative and blank control cells.Conclusion The expression of 14-3-3σ was higher in pancreatic cancer compared with normal pancre atic tissue,and the 14-3-3σ gene enhanced the cell proliferation activity of PANC-1.Therefore,14-3-3σ may play an important role in pancreatic cancer development.
