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N6-methyladenosine demethylase FTO targets pre-mRNAs and regulates alternative splicing and 3′-end processing
N6-methyladenosine (m(6)A) is the most abundant base modification found in messenger RNAs (mRNAs). The discovery of FTO as the first m(6)A mRNA demethylase established the concept of reversible RNA modification. Here, we present a comprehensive transcriptome-wide analysis of RNA demethylation and un...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5737695/ https://www.ncbi.nlm.nih.gov/pubmed/28977517 http://dx.doi.org/10.1093/nar/gkx778 |
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author | Bartosovic, Marek Molares, Helena Covelo Gregorova, Pavlina Hrossova, Dominika Kudla, Grzegorz Vanacova, Stepanka |
author_facet | Bartosovic, Marek Molares, Helena Covelo Gregorova, Pavlina Hrossova, Dominika Kudla, Grzegorz Vanacova, Stepanka |
author_sort | Bartosovic, Marek |
collection | PubMed |
description | N6-methyladenosine (m(6)A) is the most abundant base modification found in messenger RNAs (mRNAs). The discovery of FTO as the first m(6)A mRNA demethylase established the concept of reversible RNA modification. Here, we present a comprehensive transcriptome-wide analysis of RNA demethylation and uncover FTO as a potent regulator of nuclear mRNA processing events such as alternative splicing and 3΄ end mRNA processing. We show that FTO binds preferentially to pre-mRNAs in intronic regions, in the proximity of alternatively spliced (AS) exons and poly(A) sites. FTO knockout (KO) results in substantial changes in pre-mRNA splicing with prevalence of exon skipping events. The alternative splicing effects of FTO KO anti-correlate with METTL3 knockdown suggesting the involvement of m(6)A. Besides, deletion of intronic region that contains m(6)A-linked DRACH motifs partially rescues the FTO KO phenotype in a reporter system. All together, we demonstrate that the splicing effects of FTO are dependent on the catalytic activity in vivo and are mediated by m(6)A. Our results reveal for the first time the dynamic connection between FTO RNA binding and demethylation activity that influences several mRNA processing events. |
format | Online Article Text |
id | pubmed-5737695 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-57376952018-01-04 N6-methyladenosine demethylase FTO targets pre-mRNAs and regulates alternative splicing and 3′-end processing Bartosovic, Marek Molares, Helena Covelo Gregorova, Pavlina Hrossova, Dominika Kudla, Grzegorz Vanacova, Stepanka Nucleic Acids Res RNA and RNA-protein complexes N6-methyladenosine (m(6)A) is the most abundant base modification found in messenger RNAs (mRNAs). The discovery of FTO as the first m(6)A mRNA demethylase established the concept of reversible RNA modification. Here, we present a comprehensive transcriptome-wide analysis of RNA demethylation and uncover FTO as a potent regulator of nuclear mRNA processing events such as alternative splicing and 3΄ end mRNA processing. We show that FTO binds preferentially to pre-mRNAs in intronic regions, in the proximity of alternatively spliced (AS) exons and poly(A) sites. FTO knockout (KO) results in substantial changes in pre-mRNA splicing with prevalence of exon skipping events. The alternative splicing effects of FTO KO anti-correlate with METTL3 knockdown suggesting the involvement of m(6)A. Besides, deletion of intronic region that contains m(6)A-linked DRACH motifs partially rescues the FTO KO phenotype in a reporter system. All together, we demonstrate that the splicing effects of FTO are dependent on the catalytic activity in vivo and are mediated by m(6)A. Our results reveal for the first time the dynamic connection between FTO RNA binding and demethylation activity that influences several mRNA processing events. Oxford University Press 2017-11-02 2017-08-30 /pmc/articles/PMC5737695/ /pubmed/28977517 http://dx.doi.org/10.1093/nar/gkx778 Text en © The Author(s) 2017. Published by Oxford University Press on behalf of Nucleic Acids Research. http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | RNA and RNA-protein complexes Bartosovic, Marek Molares, Helena Covelo Gregorova, Pavlina Hrossova, Dominika Kudla, Grzegorz Vanacova, Stepanka N6-methyladenosine demethylase FTO targets pre-mRNAs and regulates alternative splicing and 3′-end processing |
title | N6-methyladenosine demethylase FTO targets pre-mRNAs and regulates alternative splicing and 3′-end processing |
title_full | N6-methyladenosine demethylase FTO targets pre-mRNAs and regulates alternative splicing and 3′-end processing |
title_fullStr | N6-methyladenosine demethylase FTO targets pre-mRNAs and regulates alternative splicing and 3′-end processing |
title_full_unstemmed | N6-methyladenosine demethylase FTO targets pre-mRNAs and regulates alternative splicing and 3′-end processing |
title_short | N6-methyladenosine demethylase FTO targets pre-mRNAs and regulates alternative splicing and 3′-end processing |
title_sort | n6-methyladenosine demethylase fto targets pre-mrnas and regulates alternative splicing and 3′-end processing |
topic | RNA and RNA-protein complexes |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5737695/ https://www.ncbi.nlm.nih.gov/pubmed/28977517 http://dx.doi.org/10.1093/nar/gkx778 |
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