Cell-type specific features of circular RNA expression

Thousands of loci in the human and mouse genomes give rise to circular RNA transcripts; at many of these loci, the predominant RNA isoform is a circle. Using an improved computational approach for circular RNA identification, we found widespread circular RNA expression in Drosophila melanogaster and...

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Bibliographic Details
Published in:PLoS genetics 2013-09, Vol.9 (9), p.e1003777-e1003777
Main Authors: Salzman, Julia, Chen, Raymond E, Olsen, Mari N, Wang, Peter L, Brown, Patrick O
Format: Article
Language:English
Subjects:
Animals
Cell Lineage
Drosophila melanogaster - genetics
Exons - genetics
Gene expression
Gene Expression Regulation
Humans
Insects
Mice
Poly A - genetics
Protein Isoforms - genetics
Quantitative genetics
RNA - biosynthesis
RNA - genetics
RNA sequencing
RNA Splicing - genetics
RNA, Circular
RNA, Messenger - genetics
Sequence Analysis, RNA
Studies
Transcription, Genetic
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Summary:Thousands of loci in the human and mouse genomes give rise to circular RNA transcripts; at many of these loci, the predominant RNA isoform is a circle. Using an improved computational approach for circular RNA identification, we found widespread circular RNA expression in Drosophila melanogaster and estimate that in humans, circular RNA may account for 1% as many molecules as poly(A) RNA. Analysis of data from the ENCODE consortium revealed that the repertoire of genes expressing circular RNA, the ratio of circular to linear transcripts for each gene, and even the pattern of splice isoforms of circular RNAs from each gene were cell-type specific. These results suggest that biogenesis of circular RNA is an integral, conserved, and regulated feature of the gene expression program.
ISSN:1553-7404
1553-7390
1553-7404
DOI:10.1371/journal.pgen.1003777