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[The effect of DNA methyltransferase 1 low expression on the global genome DNA methylation status of 16HBE cell].

[Article in Chinese]

Author information

  • 1Toxicology Laboratory, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China.

Abstract

OBJECTIVE:

To construct DNA methyltransferase 1 (DNMT1) low expression 16HBE cell line and observe the variation of cell cycle and global genomic DNA methylation.

METHODS:

The method of Lenti-virus induced RNA interference was applied to introduce four different shRNA fragment into 16HBE cells. Flow cytometry and 5-mC immunofluorescence methods were used to observe the cell cycle and global DNA methylation status of DNMT1 low expression 16HBE cells.

RESULTS:

The DNMT1 protein relative expression level of 16HBE-shDNMT1-4 cell line was down regulated about 44% (P < 0.05) compared with the control. No obvious differences of cell cycle and global genome DNA methylation status were observed between the 16HBE and 16HBE-shDNMT1.

CONCLUSION:

The DNMT1 gene low expression cell is successfully constructed, and there are no obvious changes happened on the cell cycle and global genomic DNA methylation.

PMID:
21619817
[PubMed - indexed for MEDLINE]
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