Abstract
ABSTRACT Deregulated expression of microRNAs (miRNAs) plays a role in the pathogenesis and progression of gastric cancer (GC). Among upregulated miRNAs, miR-25-3p has oncogenic potential and therefore represents an attractive target for the treatment of GC. Here, we investigated the role of miR-25-3p on GC cells in vitro and in vivo. We found that miR-25-3p overexpression significantly promoted growth and invasion of gastric cancer cells in vitro. Conversely, targeting miR-25-3p triggered significant inhibition of growth, invasion and migration in GC cells in vitro. In vivo delivery of miR-25-3p inhibitors induced significant anti-tumor activity in SCID mice bearing human GC xenografts. Our findings showed the evidence that in vivo antagonism of miR-25-3p impaired tumorigenesis, providing the rationale for clinical development of miR-25-3p inhibitors in GC.
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