Effects of Prostaglandin E Receptor 4 Agonist on the Expression of Stem Factors in Human CD34 Cells / 中国实验血液学杂志

ABSTRACT

OBJECTIVE@#To investigate the effect of prostaglandin E recoptor 4 antagonist (EPA) on the self-renewal ability of human CD34 cells and its mechamism.@*METHODS@#The peripheral blood hematopoietic stem cell of 20 healthy donors received the G-CSF-mobilization were collected, then the human CD34 cells were sorted out by MACS microbead kit. The human CD34 cells were treated with DMSO (control group), EPA (EPA group) and EPA+EPA antagonist (EPA+EPA group) for 72 hours. The differential genes and pathways related with CD34 cell stemness were detected by Thermogram and Pathway enrichment analysis. and then the expression levels of protein and gene (β-catenin, Nanog, Oct4, Sox2, Stat3, AKT, P38) were detected by qRT-PCR and Western blot respectively.@*RESULTS@#EPA could elevate the mRNA and protein expression of β-catenin, Nanog, Oct4, Sox2, in comparison with control group, however, mRNA and protein expression of STAT3, AKT, P38 were not changed. When human CD34 cell were cultured with EPA+XAV939 it was found that the mRNA and protein expression of β-catenin was downregulated, moreover the mRNA and protein expression of Nanog, Oct4, Sox2 were reduced.@*CONCLUSION@#EPA can upregulate stemness factors-β-catenin, Nanog, Oct4 and Sox2 in human CD34 cell in vitro, but not STAT3, AKT and P38.