The role of PUMA in oxaliplatin-induced apoptosis in colon cancer cells
- VernacularTitle:PUMA在奥沙利铂治疗大肠癌中作用机制的实验研究
- Author:
Xinying WANG
;
Meirong HE
;
Ming LI
;
Bo JIANG
- Publication Type:Journal Article
- Keywords:
Oxaliplatin;
Colorectal cancer;
Apoptosis;
PUMA
- From:
Journal of Medical Postgraduates
2003;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the role of PUMA,a Bcl-2 family member,in oxaliplatin-induced apoptosis in colorectal cancer cells.Methods:In vitro,LoVo cells were treated with 1.2,2.4,4.8 ?mol/L oxaliplatin for 24 h and 4.8 ?mol/L oxaliplatin for 6,12,24 h,PUMA expression was assessed by Western blot analysis.The anti-sense PUMA plasmid was constructed by gene recombination.PUMA expression was suppressed by stable transfecting anti-sense PUMA plasmid into LoVo cells.The apoptosis was assessed by flow cytometry analysis(FCM) and proliferation rate was assessed by MTT assay.Results:Oxaliplatin induced PUMA expression in a time-and dose-dependent manner;stable cell lines expressing the anti-sense PUMA vector were established and named LoVo puma(-/-) cells;oxaliplatin-induced apoptosis was decreased by suppression of PUMA expression;the proliferation rate in LoVo puma(-/-) cells was higher than that in LoVo cells after oxaliplatin treated.Conclusion:Our data suggest that PUMA plays an important role in oxaliplatininduced apoptosis in LoVo cells and the sensitivity of LoVo cells to oxaliplatin was abrogated by suppression of PUMA expression.
