[Arresting effect of p16 and dll4 transfection on cell cycle of K562 cells].

This study was purposed to investigate the expression and role of eukaryotic expression vector containing p16, dll4 genes in leukemia K562 cells. A vector pBudCE4.1-16-dll4 containing wild type p16cDNA and dll4cDNA was designed and constructed, then this vector was transfected into leukemia K562 cells by using lipofectamine 2000.

[Inhibitory effect of p16, p53 transfection on leukemic cell lines K562 and HL-60].

This study was purposed to construct a vector containing human suppressor gene p53 and p16, and to investigate their expression and effect on K562 and HL-60 cells. pBudCE4.1-53-16 is a vector designed for simultaneous expression of human suppressor gene p53 and p16 in mammalian cell line.

[Inhibition of K562 cell proliferation by wild type p16 and p53 genes co-transfection].

The tumor suppressor gene p53 and p16, both of which play an important role in inhibition of tumorigenesis, are homozygously deleted in human myeloid leukemia cell line K562. To explore the inhibition of K562 cell proliferation by wild type p16 and p53 genes, both p16 and p53 genes were co-transfected into K562 cells mediated by liposome. The expression of the two genes was measured by immunocytochemical method, the cell cycle was analysed by flow cytometry, and the number of recovered viable cells was assessed after transfection.