The influences of Decorin gene on biological behavior in human lung adenocarcinoma A549 cell line
10.11904/j.issn.1002-3070.2016.04.001
- VernacularTitle:Decorin基因表达对人肺腺癌A549细胞生物学行为的影响
- Author:
Xue ZHANG
;
Li WANG
;
Xiangwei YAN
;
Qingyong XU
- Publication Type:Journal Article
- Keywords:
Decorin gene;
siRNA in terference;
Proliferation;
Migration;
Invasion
- From:
Practical Oncology Journal
2016;30(4):289-294
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the influences of decorin ( DCN) gene down-regulating on biological behavior in human lung adenocarcinoma A 549 cell line.Methods Chemically synthesis in vitro targeting DCN -siRNA was transfected into human lung adenocarcinoma A 549 cells by LipofectamineTM 2000 .The gene expres-sion of DCN was detected using Real-Time PCR ;The protein expression of DCN was investigated using Western blot;Checkout DCN-siRNA effects on lung adenocarcinoma cancer cell proliferation was detected by CCK -8;The migration and invasion ability were determined by Transwell assay .Results DCN-siRNA was successfully transfected into human lung adenocarcinoma A 549 cells.Real-Time PCR results showed that DCN mRNA ex-pression level significantly decreased ,compared with untransfected group ,negative control group .Western blot re-sults showed that DCN-siRNA transfection inhibited DCN protein expression level;CCK-8 results showed that the proliferation was enhanced in the DCN -siRNA group as compared with untransfected group ,as well as the negative control group and empty vector group .Transwell assay results showed the invasion of A 549 cells in DCN-siRNA group was significantly enhanced as compared with untransfected group [(22.6 ±1.14) vs.(5.2 ± 0.84)].Wound-Healing assay results revealed that the cell repairing rate was markedly increased in DCN -siRNA group.A549 cells were close to complete repair after 48 hours.Apoptosis was not significant in DCN -siR-NA group as compared with untransfected group (P=0.214).Conclusion Down-regulation the expression of DCN gene by DCN-siRNA may enhance the ability of invasion ,migration and proliferation of A 549 cells without affecting apoptosis ,which provides a new evidence of function for advancing research of lung cancer .
