Effect of HBx on transcriptional activity of IGF-II gene P4 promoter / 中国病理生理杂志
Chinese Journal of Pathophysiology
;
(12): 7-11, 2010.
Artículo
en Chino
| WPRIM
| ID: wpr-404188
ABSTRACT
AIM:
To construct HBx eukaryotic expression vector pEYFP-C1-X and eukaryotic expression vector pGL3-P4 driven by P4 promoter of human IGF-II gene and to investigate the effect of HBx on the transcription activity of IGF-II gene P4 promoter.METHODS:
HBx gene and P4 promoters were cloned into pEYFP-C1 and pGL3-basic vectors respectively by gene recombination techniques to construct recombinant plasmids pEYFP-C1-X and pGL3-P4. HepG2 cells were transfected with pEYFP-C1-X and the resistant cell clones were selected by G418. Then methylated pGL3-P4 was transiently transfected into the above cell clones, and the transcription activity of P4 promoter was determined by dual-luciferase reporter assay system.RESULTS:
(1) Aim fragments HBx gene and P4 promoter that were cloned were 465 bp and 1 246 bp, respectively and the DNA sequences were accordant with GenBank data confirmed by restricted enzyme digestion and sequencing. (2) HepG2-EYFP-X cells that expressed HBx protein were obtained. (3) Luciferase activity of methylated P4 promoter in the HepG2-EYFP-X was more than that of control cell HepG2-EYFP (P<0.01).CONCLUSION:
HBx may enhance the transcription activity of the P4 promoter.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Idioma:
Chino
Revista:
Chinese Journal of Pathophysiology
Año:
2010
Tipo del documento:
Artículo
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