Background: Gastric cancer is a common malignant tumor of the human digestive system. Currently, the treatment of gastric cancer is still dominated by radiotherapy, chemotherapy and surgery. Although the treatment is very effective, we are also trying to find new treatment methods. Traditional Chinese Medicine (TCM) may play an important role in the treatment of gastric cancer.
Study Objective: The aim of this study is to explore the effects of naringin on the proliferation, migration, invasion and apoptosis of gastric cancer and its potential mechanisms.
Methods: MGC803 and MKN45 viability were detected by MTT assay. The effects of naringin on cell cloning, migration and invasion were determined by colony formation assay, cell scratch test and transwell assay (ThermoFisher Scientific™, Waltham, Massachusetts USA), respectively. Cell cycle and apoptosis were assayed by flow cytometry. Associated proteins were measured using Western blot and immunohistochemistry (IHC). The experimental results were further verified in nude mice.
Setting: This study was carried out in Department of Experimental Animal Center of Xi'an Jiaotong University and the Translation Medicine Center of the First Affiliated Hospital of Xi'an Jiaotong University in China.
Results: Cells remained mainly in G0/G1 phase and apoptosis was increased. The nude mouse model showed that naringin treatment could inhibit the growth of tumors in nude mice. Cell scratch tests and transwell assay showed that the invasion and migration abilities of the gastric cancer cell line were significantly reduced after naringin treatment. Western blot showed that the expression of Vimentin, Zeb1 and P-AKT was downregulated and that E-cadherin was upregulated after naringin treatment.
Conclusion: Naringin can block the cell-cycle, induce cancer cell apoptosis, and inhibit the epithelial mesenchymal transition (EMT) process by inhibiting the PI3K-AKT/Zeb1 pathway in gastric cancer cells. Therefore, naringin can inhibit the development of gastric cancer.
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