RESUMEN
Objective To investigate the effects of stimulation of CD40 on the growth,prolifera- lion and apoptosis of gastric cancer cell lines,and the change of gene expression profiles of gastric cancer cell AGS.Methods The growth and proliferation of AGS cells treated with different concentrations of soluble CD40 ligand were measured by MTT in order to choose optimum stimulating concentration of so- luble CD40 ligand.Cell cycle and apoptosis of AGS cells were analyzed by flow cytometry.Gene expres- sion profiles of AGS cells were analyzed by Affymetrix U133A 2.0 after treated with soluble CD40 ligand for 48 h.Results Two?g/ml of.soluble CD40 ligand was the optimum concentration.After being cul- tured with soluble CD40 ligand for 48h,the growth of AGS cell was inhibited and blockade in G1 phase. There were 414 alterative genes found in AGS cells including 209 up-regulated genes and 205 down-regu- lated genes.Forty-five genes varied significantly(P