TY - JOUR T1 - Discovering the Interactions between Circular RNAs and RNA-binding Proteins from CLIP-seq Data using circScan JF - bioRxiv DO - 10.1101/115980 SP - 115980 AU - Bin Li AU - Xiao-Qin Zhang AU - Shu-Rong Liu AU - Shun Liu AU - Wen-Ju Sun AU - Qiao Lin AU - Yu-Xia Luo AU - Ke-Ren Zhou AU - Chen-Min Zhang AU - Ye-Ya Tan AU - Jian-Hua Yang AU - Liang-Hu Qu Y1 - 2017/01/01 UR - http://biorxiv.org/content/early/2017/03/11/115980.abstract N2 - Although tens of thousands of circular RNAs (circRNAs) have been identified in mammalian genomes, only few of them have been characterized with biological functions. Here, we report a new approach, circScan, to identify regulatory interactions between circRNAs and RNA-binding proteins (RBPs) by discovering back-splicing reads from Cross-Linking and Immunoprecipitation followed by high-throughput sequencing (CLIP-seq) data. By using our method, we have systematically scanned ~1500 CLIP-seq datasets, and identified ~12540 and ~1090 novel circRNA-RBP interactions in human and mouse genomes, respectively, which include all known interactions between circRNAs and Argonaute (AGO) proteins. More than twenty novel interactions were further experimentally confirmed by RNA Immunoprecipitation quantitative PCR (RIP-qPCR). Importantly, we uncovered that some natural circRNAs interacted with cap-independent translation factors eukaryotic initiation factor 3 (eIF3) and N6-Methyladenosine (m6A), indicating they can be translated into proteins. These findings demonstrate that circRNAs are regulated by various RBPs, suggesting they may play important roles in diverse biological processes. ER -