Hu ZL, Tan DM, Hou ZH, Xie P, Liu GZ, Ouyang Y, Liu F, Liu HB. HBx gene deletion mutant (HBx-d382) enhances the proliferation and anchorage-independent growth of L02 cells.
Shijie Huaren Xiaohua Zazhi 2010;
18:1109-1114. [DOI:
10.11569/wcjd.v18.i11.1109]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To establish a L02 cell line stably expressing HBx gene deletion mutant (HBx-d382) and to examine their proliferation changes.
METHODS: A recombinant plasmid encoding the HBx deletion mutant (pcDNA3.0/HBx-d382) was verified by PCR amplification, double restriction digestion and DNA sequencing, and then introduced into L02 cells by liposome-mediated transfection. Positive clones were selected in the present of G418. The genome integration of the HBx gene deletion mutant was confirmed by PCR amplification, and the expression of the deletion mutant was detected by reverse transcription-polymerase chain reaction (RT-PCR) and Western blot. Cell proliferation changes were measured by methyl thiazol tetrazolium (MTT) assay and soft agar colony formation assay. The cell cycle distribution was tested by flow cytometry.
RESULTS: The recombinant plasmid pcDNA3.0/HBx-d382 was verified to contain HBx-d382 by PCR amplification, double digestion and DNA sequencing. Positive clones selected with G418 harbored chromosomally integrated HBx-d382 and could express HBx-d382. This cell line showed enhanced proliferation and anchorage-independent growth as revealed by MTT assay and soft agar colony formation assay. The percentage of cells in S and G2 phases increased in transfected cell line.
CONCLUSION: L02 cell line stably expressing the HBx deletion mutant is established successfully. The proliferation ability of this cell line increases probably due to altered cell cycle.
Collapse