RNAi-silenced human Bmi-1 gene inhibits proliferation of human leukemia cell line K562
- VernacularTitle:Bmi-1 siRNA对人白血病K562细胞增殖的影响及其机制
- Author:
Yong ZHU
;
Yide HU
;
Zhonghua HU
- Publication Type:Journal Article
- Keywords:
B-cell specific Moloney murine leukaemia virus insertion site-1 gene;
small interference RNA;
human leukemia cell line K562;
P16 protein
- From:Journal of Third Military Medical University
2003;0(09):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the silence of B-cell specific Moloney murine leukaemia virus insertion site 1(Bmi-1)by RNA interference on the proliferation of human leukemia cell line K562 and its mechanisms.Methods Small interfering RNA(siRNA)targeting Bmi-1 gene was designed and double-stranded siRNA was chemically synthesized.After double-stranded siRNA was transfected into K562 cells with Lipofectamine 2000,the proliferation of K562 cells was detected by MTT colorimetry,cell cycle was determined by flow cytometry,and the expression of Bmi-1 and P16 were analyzed by Western blotting.Results The siRNA targeting human Bmi-1 gene effectively prolonged the double time of K562 cells,increased the percentage of cells at G1 phase,and the expression of Bmi-1 was significantly down-regulated but the expression of P16 was up-regulated.Conclusion The siRNA targeting human Bmi-1 gene inhibits the proliferation of K562 cells,and up-regulates the expression of P16 in the cells.
