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| Item Type: | Article |
|---|---|
| Title: | Translation of circRNAs |
| Creators Name: | Pamudurti, N.R. and Bartok, O. and Jens, M. and Ashwal-Fluss, R. and Stottmeister, C. and Ruhe, L. and Hanan, M. and Wyler, E. and Perez-Hernandez, D. and Ramberger, E. and Shenzis, S. and Samson, M. and Dittmar, G. and Landthaler, M. and Chekulaeva, M. and Rajewsky, N. and Kadener, S. |
| Abstract: | Circular RNAs (circRNAs) are abundant and evolutionarily conserved RNAs of largely unknown function. Here, we show that a subset of circRNAs is translated in vivo. By performing ribosome footprinting from fly heads, we demonstrate that a group of circRNAs is associated with translating ribosomes. Many of these ribo-circRNAs use the start codon of the hosting mRNA, are bound by membrane-associated ribosomes, and have evolutionarily conserved termination codons. In addition, we found that a circRNA generated from the muscleblind locus encodes a protein, which we detected in fly head extracts by mass spectrometry. Next, by performing in vivo and in vitro translation assays, we show that UTRs of ribo-circRNAs (cUTRs) allow cap-independent translation. Moreover, we found that starvation and FOXO likely regulate the translation of a circMbl isoform. Altogether, our study provides strong evidence for translation of circRNAs, revealing the existence of an unexplored layer of gene activity. |
| Keywords: | CircRNA, Translation, Muscleblind, Cap-Independent, Animals, Drosophila, Mice, Rats |
| Source: | Molecular Cell |
| ISSN: | 1097-2765 |
| Publisher: | Cell Press |
| Volume: | 66 |
| Number: | 1 |
| Page Range: | 9-21 |
| Date: | 6 April 2017 |
| Official Publication: | https://doi.org/10.1016/j.molcel.2017.02.021 |
| PubMed: | View item in PubMed |
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