期刊
NUCLEIC ACIDS RESEARCH
卷 44, 期 6, 页码 -出版社
OXFORD UNIV PRESS
DOI: 10.1093/nar/gkv1458
关键词
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资金
- Lundbeck Foundation [R151-2013-14555, R180-2014-4051, R140-2013-13425]
- Novo Nordisk Foundation [7719]
- Danish Council for Independent Research|Natural Sciences [4181-00446B]
- Lundbeck Foundation
- Danish Council for Independent Research|Natural Sciences
- Lundbeck Foundation [R151-2013-14555, R140-2013-13425] Funding Source: researchfish
- Novo Nordisk Fonden [NNF13OC0007719, NNF15OC0017598] Funding Source: researchfish
- Villum Fonden [00013393] Funding Source: researchfish
CircRNAs are novel members of the non-coding RNA family. For several decades circRNAs have been known to exist, however only recently the widespread abundance has become appreciated. Annotation of circRNAs depends on sequencing reads spanning the backsplice junction and therefore map as nonlinear reads in the genome. Several pipelines have been developed to specifically identify these nonlinear reads and consequently predict the landscape of circRNAs based on deep sequencing datasets. Here, we use common RNAseq datasets to scrutinize and compare the output from five different algorithms; circRNA finder, find circ, CIRCexplorer, CIRI, and MapSplice and evaluate the levels of bona fide and false positive circRNAs based on RNase R resistance. By this approach, we observe surprisingly dramatic differences between the algorithms specifically regarding the highly expressed circRNAs and the circRNAs derived from proximal splice sites. Collectively, this study emphasizes that circRNA annotation should be handled with care and that several algorithms should ideally be combined to achieve reliable predictions.
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