BATF Inhibits Cell Proliferation and Migration via PI3K/AKT/mTOR Pathway in Clear Cell Renal Cell Carcinoma
Abstract Background Previous studies reported that BATF played an important role in the progression of various cancers, but no report had been found on clear cell renal cell carcinoma(ccRCC). So we investigated the effects of BATF on the progression of ccRCC. Methods In this study, using TCGA-KIRC database from the Cancer Genome Atlas to analyze the differential genes of BATF in ccRCC ; using immunohistochemistry to detect BATF expression in 75 ccRCC tumorous and 28 nontumorous tissues, and investigate its relationship with clinicopathological parameters. Moreover, we constructed the cell lines of BATF overexpression and knockout in Caki-1and 786-0 ccRCC cell lines and confirmed by western blot. CCK8 assay was used to evaluated the cell viability and using EdU staining to detect cell proliferation; using Transwell experiment to investigate the affection of BATF in ccRCC cell migration. Westernblot was used to detect the phosphorylation of PI3K/AKT/mTOR. Results These results revealed that BATF expression in ccRCC tumorous was significantly higher compared with that in adjacent nontumorous tissues and was significantly correlated with T stage, Fuhrman grade, Tumor necrosis and status. In addiditon, BATF overexpression significantly inhibited the viability, proliferation and migration of the two cell lines. More importantly, using westernblot showed that silencing BATF significantly increased the level of phosphorylated AKT, PI3K and mTOR, while BATF overexpression decreased phosphorylation that involved in the PI3K/Akt/mTOR signaling pathway. Conclusions Our findings demonstrate that BATF plays an important role in the progression of ccRCC and it may act as an tumor supressor gene to inhibit the progression of ccRCC through regulating the PI3K/Akt/mTOR signaling pathway.