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ADP-ribosylation factor 3 (ARF3) has confirmed participate in diverse biological processes in many cancers. However, the expression patterns and roles of ARF3 in gastric cancer (GC) remains largely unknown. In our study, by using qRT-PCR and western blot, we found that, in In GC tissues and cells, the expression of ARF3 was significantly down-regulated. Functional experiments demonstrated that ARF3 inhibited proliferation, induced cycle arrest and enhanced apoptosis of GC cells. Moreover, by performing western blot, we found that ARF3 could regulate the protein expression of key factors of AKT and ERK pathway. Using orthotopic xenograft mouse models, it is showed that ARF3 could inhibit GC tumorigenesis in vivo. To sum up, ARF3 may suppress proliferation, induced cycle arrest and promotes apoptosis of GC by modulating AKT and ERK pathway. It might act as a potential biomarker for GC prognosis.

ARF3 inhibits proliferation and promotes apoptosis in gastric cancer by regulating AKT and ERK pathway