AGO2 and cervical cancer: Figures 5A, B showed that circLMO1 was mostly located in the cytoplasm. RIP assay using argonaute 2 (AGO2) antibody showed that circLMO1 was markedly enriched by AGO2 antibody (Figure 5C). These results indicated that circLMO1 may act as a ceRNA. The bioinformatics analysis was carried out using miRDB tool (http://mirdb.org/mirdb/index.html) to predict the potential miRNAs sponged by circLMO1, and 12 miRNAs were identified (Supplementary Table S2). Among them, miR-4291 and miR-762 were significantly increased in cervical cancer cells compared with normal cervical epithelial cells (Figure 5D).