Reversal of leukemia multidrug resistance by sequence-specific short hairpin RNA.
- Author:
Wei-Ting DU
1
;
Bin LIU
;
Dong-Sheng GU
;
Zhi-Bo HAN
;
Peng-Xia LIU
;
Jie XU
;
Lu LIANG
;
Hai-Feng ZHAO
;
Shi-Hong LU
;
Ren-Chi YANG
Author Information
1. National Key Labortory of Experimental Hematology, Institute of Hematology & Blood Disease Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, China.
- Publication Type:Journal Article
- MeSH:
ATP Binding Cassette Transporter, Sub-Family B;
ATP-Binding Cassette, Sub-Family B, Member 1;
genetics;
Base Sequence;
Drug Resistance, Multiple;
genetics;
Drug Resistance, Neoplasm;
genetics;
Gene Knockdown Techniques;
Genes, MDR;
Genetic Vectors;
Humans;
K562 Cells;
Leukemia;
genetics;
RNA Interference;
RNA, Messenger;
genetics;
RNA, Small Interfering;
genetics;
Transfection
- From:
Journal of Experimental Hematology
2009;17(3):563-567
- CountryChina
- Language:Chinese
-
Abstract:
This study was aimed to design and screen short hairpin RNA (shRNA) molecules targeting multidrug resistance gene (mdr1), as well as to investigate the effects of shRNA expression vector on K562/A02 cells. Mdr1-shRNA expression vector was transfected into K562/A02 cells by lipofectamine 2000, and G418 was added to screen and establish the stable expression cell strain. The expressions of mdr1 mRNA and protein were detected by real-time RT-PCR and Western blot respectively. The sensitivity of cells to chemodrugs after interference were tested by CCK8 assay. The function of p-glycoprotein was determined by Rhodamine 123 efflux experiment. The results showed that all of 4 mdr1-shRNA expression vectors could significantly knockdown the expression of p-glycoprotein as compared with control vector, moreover, the vector targeting 508 - 526 sites of mdr1 gene was the best one. It is concluded that the mdr1-shRNA expression vector gained by screening can significantly knockdown the expression of mdr1 gene and reverse leukemia drug resistance, paving the way for the application of RNAi in the following animal experiments.
