Elav-Mediated Exon Skipping and Alternative Polyadenylation of the Dscam1 Gene Are Required for Axon Outgrowth
Summary: Many metazoan genes express alternative long 3′ UTR isoforms in the nervous system, but their functions remain largely unclear. In Drosophila melanogaster, the Dscam1 gene generates short and long (Dscam1-L) 3′ UTR isoforms because of alternative polyadenylation (APA). Here, we found that t...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-06-01
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| Series: | Cell Reports |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211124719307223 |
| _version_ | 1818990163851739136 |
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| author | Zhiping Zhang Kevin So Ryan Peterson Matthew Bauer Henry Ng Yong Zhang Jung Hwan Kim Thomas Kidd Pedro Miura |
| author_facet | Zhiping Zhang Kevin So Ryan Peterson Matthew Bauer Henry Ng Yong Zhang Jung Hwan Kim Thomas Kidd Pedro Miura |
| author_sort | Zhiping Zhang |
| collection | DOAJ |
| description | Summary: Many metazoan genes express alternative long 3′ UTR isoforms in the nervous system, but their functions remain largely unclear. In Drosophila melanogaster, the Dscam1 gene generates short and long (Dscam1-L) 3′ UTR isoforms because of alternative polyadenylation (APA). Here, we found that the RNA-binding protein Embryonic Lethal Abnormal Visual System (Elav) impacts Dscam1 biogenesis at two levels, including regulation of long 3′ UTR biogenesis and skipping of an upstream exon (exon 19). MinION long-read sequencing confirmed the connectivity of this alternative splicing event to the long 3′ UTR. Knockdown or CRISPR deletion of Dscam1-L impaired axon outgrowth in Drosophila. The Dscam1 long 3′ UTR was found to be required for correct Elav-mediated skipping of exon 19. Elav thus co-regulates APA and alternative splicing to generate specific Dscam1 transcripts that are essential for neural development. This coupling of APA to alternative splicing might represent a new class of regulated RNA processing. : Like most metazoan genes, Dscam1 expresses alternative short and long 3′ UTR mRNAs. Zhang et al. find that loss of Dscam1 long 3′ UTR transcripts impairs axon outgrowth in Drosophila. Long-read sequencing reveals that these long 3′ UTR mRNAs preferentially skip an upstream exon, altering Dscam1 amino acid sequence. Keywords: 3′ UTR, alternative cleavage and polyadenylation, alternative splicing, axon guidance, CRISPR, Dscam1, Elav, exon skipping, MinION |
| first_indexed | 2024-12-20T19:50:01Z |
| format | Article |
| id | doaj.art-a12d0f3ed21644729ac989a5619d844b |
| institution | Directory Open Access Journal |
| issn | 2211-1247 |
| language | English |
| last_indexed | 2024-12-20T19:50:01Z |
| publishDate | 2019-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Cell Reports |
| spelling | doaj.art-a12d0f3ed21644729ac989a5619d844b2022-12-21T19:28:20ZengElsevierCell Reports2211-12472019-06-01271338083817.e7Elav-Mediated Exon Skipping and Alternative Polyadenylation of the Dscam1 Gene Are Required for Axon OutgrowthZhiping Zhang0Kevin So1Ryan Peterson2Matthew Bauer3Henry Ng4Yong Zhang5Jung Hwan Kim6Thomas Kidd7Pedro Miura8Department of Biology, University of Nevada, Reno, Reno, NV, USADepartment of Biology, University of Nevada, Reno, Reno, NV, USADepartment of Biology, University of Nevada, Reno, Reno, NV, USADepartment of Biology, University of Nevada, Reno, Reno, NV, USADepartment of Biology, University of Nevada, Reno, Reno, NV, USADepartment of Biology, University of Nevada, Reno, Reno, NV, USADepartment of Biology, University of Nevada, Reno, Reno, NV, USADepartment of Biology, University of Nevada, Reno, Reno, NV, USADepartment of Biology, University of Nevada, Reno, Reno, NV, USA; Corresponding authorSummary: Many metazoan genes express alternative long 3′ UTR isoforms in the nervous system, but their functions remain largely unclear. In Drosophila melanogaster, the Dscam1 gene generates short and long (Dscam1-L) 3′ UTR isoforms because of alternative polyadenylation (APA). Here, we found that the RNA-binding protein Embryonic Lethal Abnormal Visual System (Elav) impacts Dscam1 biogenesis at two levels, including regulation of long 3′ UTR biogenesis and skipping of an upstream exon (exon 19). MinION long-read sequencing confirmed the connectivity of this alternative splicing event to the long 3′ UTR. Knockdown or CRISPR deletion of Dscam1-L impaired axon outgrowth in Drosophila. The Dscam1 long 3′ UTR was found to be required for correct Elav-mediated skipping of exon 19. Elav thus co-regulates APA and alternative splicing to generate specific Dscam1 transcripts that are essential for neural development. This coupling of APA to alternative splicing might represent a new class of regulated RNA processing. : Like most metazoan genes, Dscam1 expresses alternative short and long 3′ UTR mRNAs. Zhang et al. find that loss of Dscam1 long 3′ UTR transcripts impairs axon outgrowth in Drosophila. Long-read sequencing reveals that these long 3′ UTR mRNAs preferentially skip an upstream exon, altering Dscam1 amino acid sequence. Keywords: 3′ UTR, alternative cleavage and polyadenylation, alternative splicing, axon guidance, CRISPR, Dscam1, Elav, exon skipping, MinIONhttp://www.sciencedirect.com/science/article/pii/S2211124719307223 |
| spellingShingle | Zhiping Zhang Kevin So Ryan Peterson Matthew Bauer Henry Ng Yong Zhang Jung Hwan Kim Thomas Kidd Pedro Miura Elav-Mediated Exon Skipping and Alternative Polyadenylation of the Dscam1 Gene Are Required for Axon Outgrowth Cell Reports |
| title | Elav-Mediated Exon Skipping and Alternative Polyadenylation of the Dscam1 Gene Are Required for Axon Outgrowth |
| title_full | Elav-Mediated Exon Skipping and Alternative Polyadenylation of the Dscam1 Gene Are Required for Axon Outgrowth |
| title_fullStr | Elav-Mediated Exon Skipping and Alternative Polyadenylation of the Dscam1 Gene Are Required for Axon Outgrowth |
| title_full_unstemmed | Elav-Mediated Exon Skipping and Alternative Polyadenylation of the Dscam1 Gene Are Required for Axon Outgrowth |
| title_short | Elav-Mediated Exon Skipping and Alternative Polyadenylation of the Dscam1 Gene Are Required for Axon Outgrowth |
| title_sort | elav mediated exon skipping and alternative polyadenylation of the dscam1 gene are required for axon outgrowth |
| url | http://www.sciencedirect.com/science/article/pii/S2211124719307223 |
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