Effects of ATRA on proliferation, migration and cell cycle of gastric cancer MGC-803 cells-siftdesk

Objective：To study the effects of all-trans-retinoic acid (ATRA) on proliferation, migration and cycle of human gastric cancer MGC-803 cells. Methods：The proliferation activity of gastric cancer MGC-803 cells treated with different concentrations of ATRA was detected by CCK-8 assay. The morphological changes of MGC-803 cells in each group were observed under inverted microscope. The migration ability of cells in each group was detected by scratch test. Flow cytometry was used to detect the change of MGC-803 cell cycle. Results：CCK-8 results showed that ATRA could significantly inhibit the proliferation of MGC-803 cells, and the inhibition rate of cell proliferation increased gradually with the increasing of ATRA concentrations and action time, in a dose-time dependent manner(P<0.05). Under inverted microscope, the morphology of MGC-803 cells changed and the number of viable cells decreased significantly after ATRA treatment. The results of scratch assay showed that ATRA could significantly inhibit the migration of gastric cancer MGC-803 cells, and the repair rate of scratch area decreased significantly with the increasing of ATRA concentration(P<0.05).Flow cytometry showed that the proportion of G0/G1 phase cells increased significantly after ATRA treatment, and the proportion of S phase cells decreased (P<0.05).And there was no significant change in G2/M phase cell proportion (P>0.05).