Reversal of multidrug resistance in hepatocellular cell line HepG2R by mdr1-antisense RNA / 中华肝脏病杂志
Chinese Journal of Hepatology
;
(12): 594-598, 2009.
Article
in Chinese
| WPRIM
| ID: wpr-310039
ABSTRACT
<p><b>OBJECTIVE</b>To investigate whether multidrug resistance gene 1(mdr1) could reverse multidrug resistance (MDR) in HepG2R cells.</p><p><b>METHODS</b>An adenovirus vector, Adeno-asmdr, containing the antisense RNA driven by AFP promoter, was construct. Adeno-EGFP was transfected into HepG2, an AFP producing cell line, L02, a normal human liver cell line, and HeLa, a human cervical cancer cell line, the EGFP transcription level was detected by RT-PCR. Adeno-asmdr was transfected into HepG2R cells, the expression of P-gp170 was detected by western blotting, apoptosis was detected using TUNEL and flow cytometry, cell cycle was analyzed by flow cytometry.</p><p><b>RESULTS</b>EGFP was highly expressed in HepG2 cells, however, its expression in L02 or HeLa cells was very weak. Western blot showed that the P-gp170 was marked down-regulated 48h after transfection with Adeno-asmdr, and the expression of P-gp170 was detectable at least 7d post-transfection. Compared with control cells, Adeno-asmdr transfected HepG2R cells were more sensitive to different chemicals, as indicated by TUNEL staining and flow cytometry. Chemical treatment arrested the cells in S and G0/M phase.</p><p><b>CONCLUSION</b>The recombinant adenoviral vector, Adeno-asmdr, can block the expression of mdr1, and reverse MDR in HepG2R cells.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pharmacology
/
HeLa Cells
/
Transfection
/
Gene Expression Regulation, Neoplastic
/
Cell Cycle
/
Adenoviridae
/
RNA, Antisense
/
Apoptosis
/
Carcinoma, Hepatocellular
/
ATP Binding Cassette Transporter, Subfamily B, Member 1
Limits:
Humans
Language:
Chinese
Journal:
Chinese Journal of Hepatology
Year:
2009
Type:
Article
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