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- W2803552020 abstract "Abstract p53 mutations are frequently detected in malignant gastric cancers. However, the molecular mechanisms by which loss of p53 function promotes gastric cancer are not clear. We utilized Gan mice ( K19-Wnt1/C2mE ), which have functional p53 and develop intestinal-type gastric tumors, to investigate the role of p53 in gastric cancer progression by knocking out p53 . We found that gastric epithelial cells acquire tumorigenicity in the subcutis of C57BL/6 mice as a result of Wnt activation, COX-2 activation and p53 deficiency. With repeated allograft transfers, these gastric epithelial cells gradually acquired the properties of malignant gastric cancer. Loss of p53 conferred cell stemness and induced epithelial to mesenchymal transition (EMT) in gastric epithelial cells, and these properties were further enhanced by the in vivo microenvironment, ultimately leading to gastric cancer formation and metastasis. We also found that the in vivo microenvironment enhanced activation of the COX-2 pathway, which further contributed to cancer progression. With this system, we have succeeded in recapitulating the development of malignant gastric cancer from gastric epithelial cells in a normal immune environment." @default.
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- W2803552020 date "2018-02-02" @default.
- W2803552020 modified "2023-10-17" @default.
- W2803552020 title "Functional loss of p53 cooperates with the in vivo microenvironment to promote malignant progression of gastric cancers" @default.
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- W2803552020 doi "https://doi.org/10.1038/s41598-018-20572-1" @default.
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