AIM:To explore the inhibitory effects of dobutamine on gastric adenocarcinoma cells.METHODS:Dobutamine was used to treat gastric adenocarcinoma cells(SGC-7901)and cell viability was determined by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide(MTT)assay.The effects of dobutamine combined with cisplatin on cell viability were also analyzed.Cell migration was studied using the wound healing assay,and cell proliferation was analyzed using the colony formation assay.A cell invasion assay was carried out using Transwell cell culture chambers.The cell cycle and cell apoptosis were analyzed by flow cytometry.Western blot and immunocytochemistry were performed to determine the expression of Yes-associated protein(YAP)in treated cells.RESULTS:Dobutamine significantly inhibited cell growth,migration,cell colony formation,and cell invasion into Matrigel.Dobutamine also arrested the cell cycle at G1/S phase,and increased the rate of apoptosis of gastric adenocarcinoma cells.The expression ofYAP was detected mainly in the nucleus in the absence of dobutamine.However,reduced expression of phosphorylated YAP was mainly found in the cytosol following treatment with dobutamine.CONCLUSION:Dobutamine has significant inhibitory effects on gastric adenocarcinoma cells and may be used in neoadjuvant therapy not only for gastric cancer,but also for other tumors. AIM: To explore the inhibitory effects of dobutamine on gastric adenocarcinoma cells. METHODS: Dobutamine was used to treat gastric adenocarcinoma cells (SGC-7901) and cell viability was determined by the 3- (4,5-dimethylthiazol- 2,5-diphenyltetrazolium bromide (MTT) assay. The effects of dobutamine combined with cisplatin on cell viability were also analyzed. Cell migration was studied using the wound healing assay, and cell proliferation was analyzed using the colony formation assay. A cell invasion assay. was carried out using Transwell cell culture chambers. The cell cycle and cell apoptosis were analyzed by flow cytometry. Western blot and immunocytochemistry were performed to determine the expression of Yes-associated protein (YAP) in treated cells. , migration, cell colony formation, and cell invasion into Matrigel. Dobutamine also arrested the cell cycle at G1 / S phase, and increased the rate of apoptosis of gastric adenocarcinoma cells. ex. pression ofYAP was detected mainly in the nucleus in the absence of dobutamine. Although, reduced expression of phosphorylated YAP was mainly found in the cytosol following treatment with dobutamine. CONCLUSION: Dobutamine has significant inhibitory effects on gastric adenocarcinoma cells and may be used in neoadjuvant therapy not only for gastric cancer, but also for other tumors.