Abstract
To study the function of S100A9 protein in HL-60 cells treated with all- trans retinoic acid (ATRA), we had designed and constructed retroviral vectors for expression of small hairpin RNAs (shRNAs), and silenced S100A9 expression in HL-60 cells treated with ATRA. The silence efficiency of siRNA was detected with RT-PCR and Western blotting. The differentiation of HL-60 was monitored by nitro blue tetrazolium (NBT) reduction experiment. Western blot showed that shRNAs remarkably reduce of S100A9 expression in HL-60 cells when they were induced to differentiation by ATRA. But NBT positive percentage of differentiated HL-60 cells was no remarked change with S100A9 expression. The data indicated S100A9 could be no important action during differentiation of HL-60 treated with ATRA.
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