ABSTRACT
Aim: To investigate the expression and i-dentification of differential miRNAs in human gastric cancer MGC803 cells induced by diallyl disulfide (DADS). Methods: Differential miRNAs expression in human gastric cancer MGC803 cells induced by DADS was detected and identified by miRNA chip and qPCR. Results: MiRNAs chip detection showed upregulation of miR-200b, miR-22, miR-7, miR-143, miR-138, miR-34a and miR-150, and down-regulation of miR-222, miR-21, miR-15b, miR-182 and miR-18a in differential miRNAs of MGC803 cells treated with 3 0 mg · IT-1 DADS at 24 h(P<0.05). And qPCR demonstrated that the expressions of miR-200b, miR-22, miR-7, miR-143, miR-138, miR-34a and miR-150 was up-regulated in MGC803 cells treated with 30 mg · L-1 DADS(P <0. 05). Moreover, qPCR showed that the expressions of miR-200b and miR-22 in various human gastric cancer cells including MGC803, BGC823, MKN28, SGC7901 and HGC27 cells were lower than normal human gastric cancer GES-1 cells (P <0. 05). The expression of miR-200b and miR-22 in gastric cancer tissues was significantly lower than that in normal gastric tissues (P < 0. 05). Conclusions: The expression of down-regulation of 7 miRNA and up-regulation of 5 miRNA in differential miRNAs in MGC803 cells induced by DADS. The expression of down-regulation of miR-200b and miR-22 in gastric cancer tissues and cells. DADS could up-regulate the expression of miR-200b and miR-22 in gastric cancer cells.