CircRNA circ-BANP-mediated miR-503/LARP1 signaling contributes to lung cancer progression.
Biochemical and Biophysical Research Communications(2018)
摘要
Recently, circular RNAs (circRNAs) attract much attention due to their potential vital functions in multiple human diseases, including cancer. circ-BANP has been reported to modulate colorectal cancer growth. Nevertheless, the relationship between circ-BANP and lung cancer requires to be investigated. In this study, we found circ-BANP was overexpressed in lung cancer tissues. Higher circ-BANP expression was associated with lower survival rate. Moreover, silencing circ-BANP markedly inhibited proliferation, migration and invasion of lung cancer cells in vitro and impaired tumor propagation in vivo. In mechanism, circ-BANP was identified as the sponge of miR-503 while miR-503 targets LARP1. Circ-BANP-induced inhibition of miR-503 led to increased expression of LARP1 in lung cancer. Finally, rescue assays indicated that LARP1 restoration partially reversed the effects of circ-BANP knockdown in lung cancer. In sum, our study illustrated that circ-BANP-mediated miR-503/LARP1 signaling promoted lung cancer growth, migration and invasion, providing a novel insight on the mechanism underlying lung cancer progression.
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关键词
Circular RNA,circ-BANP,Lung cancer,Progression
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