The intron in centromeric noncoding RNA facilitates RNAi-mediated formation of heterochromatin.
In fission yeast, the formation of centromeric heterochromatin is induced through the RNA interference (RNAi)-mediated pathway. Some pre-mRNA splicing mutants (prp) exhibit defective formation of centromeric heterochromatin, suggesting that splicing factors play roles in the formation of heterochrom...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2017-02-01
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| Series: | PLoS Genetics |
| Online Access: | http://europepmc.org/articles/PMC5322907?pdf=render |
| _version_ | 1819020052938096640 |
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| author | Masatoshi Mutazono Misato Morita Chihiro Tsukahara Madoka Chinen Shiori Nishioka Tatsuhiro Yumikake Kohei Dohke Misuzu Sakamoto Takashi Ideue Jun-Ichi Nakayama Kojiro Ishii Tokio Tani |
| author_facet | Masatoshi Mutazono Misato Morita Chihiro Tsukahara Madoka Chinen Shiori Nishioka Tatsuhiro Yumikake Kohei Dohke Misuzu Sakamoto Takashi Ideue Jun-Ichi Nakayama Kojiro Ishii Tokio Tani |
| author_sort | Masatoshi Mutazono |
| collection | DOAJ |
| description | In fission yeast, the formation of centromeric heterochromatin is induced through the RNA interference (RNAi)-mediated pathway. Some pre-mRNA splicing mutants (prp) exhibit defective formation of centromeric heterochromatin, suggesting that splicing factors play roles in the formation of heterochromatin, or alternatively that the defect is caused by impaired splicing of pre-mRNAs encoding RNAi factors. Herein, we demonstrate that the splicing factor spPrp16p is enriched at the centromere, and associates with Cid12p (a factor in the RNAi pathway) and the intron-containing dg ncRNA. Interestingly, removal of the dg intron, mutations of its splice sites, or replacement of the dg intron with an euchromatic intron significantly decreased H3K9 dimethylation. We also revealed that splicing of dg ncRNA is repressed in cells and its repression depends on the distance from the transcription start site to the intron. Inefficient splicing was also observed in other intron-containing centromeric ncRNAs, dh and antisense dg, and splicing of antisense dg ncRNA was repressed in the presence of the RNAi factors. Our results suggest that the introns retained in centromeric ncRNAs work as facilitators, co-operating with splicing factors assembled on the intron and serving as a platform for the recruitment of RNAi factors, in the formation of centromeric heterochromatin. |
| first_indexed | 2024-12-21T03:45:05Z |
| format | Article |
| id | doaj.art-44116123d34c466798f4d127e1e3a016 |
| institution | Directory Open Access Journal |
| issn | 1553-7390 1553-7404 |
| language | English |
| last_indexed | 2024-12-21T03:45:05Z |
| publishDate | 2017-02-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS Genetics |
| spelling | doaj.art-44116123d34c466798f4d127e1e3a0162022-12-21T19:17:06ZengPublic Library of Science (PLoS)PLoS Genetics1553-73901553-74042017-02-01132e100660610.1371/journal.pgen.1006606The intron in centromeric noncoding RNA facilitates RNAi-mediated formation of heterochromatin.Masatoshi MutazonoMisato MoritaChihiro TsukaharaMadoka ChinenShiori NishiokaTatsuhiro YumikakeKohei DohkeMisuzu SakamotoTakashi IdeueJun-Ichi NakayamaKojiro IshiiTokio TaniIn fission yeast, the formation of centromeric heterochromatin is induced through the RNA interference (RNAi)-mediated pathway. Some pre-mRNA splicing mutants (prp) exhibit defective formation of centromeric heterochromatin, suggesting that splicing factors play roles in the formation of heterochromatin, or alternatively that the defect is caused by impaired splicing of pre-mRNAs encoding RNAi factors. Herein, we demonstrate that the splicing factor spPrp16p is enriched at the centromere, and associates with Cid12p (a factor in the RNAi pathway) and the intron-containing dg ncRNA. Interestingly, removal of the dg intron, mutations of its splice sites, or replacement of the dg intron with an euchromatic intron significantly decreased H3K9 dimethylation. We also revealed that splicing of dg ncRNA is repressed in cells and its repression depends on the distance from the transcription start site to the intron. Inefficient splicing was also observed in other intron-containing centromeric ncRNAs, dh and antisense dg, and splicing of antisense dg ncRNA was repressed in the presence of the RNAi factors. Our results suggest that the introns retained in centromeric ncRNAs work as facilitators, co-operating with splicing factors assembled on the intron and serving as a platform for the recruitment of RNAi factors, in the formation of centromeric heterochromatin.http://europepmc.org/articles/PMC5322907?pdf=render |
| spellingShingle | Masatoshi Mutazono Misato Morita Chihiro Tsukahara Madoka Chinen Shiori Nishioka Tatsuhiro Yumikake Kohei Dohke Misuzu Sakamoto Takashi Ideue Jun-Ichi Nakayama Kojiro Ishii Tokio Tani The intron in centromeric noncoding RNA facilitates RNAi-mediated formation of heterochromatin. PLoS Genetics |
| title | The intron in centromeric noncoding RNA facilitates RNAi-mediated formation of heterochromatin. |
| title_full | The intron in centromeric noncoding RNA facilitates RNAi-mediated formation of heterochromatin. |
| title_fullStr | The intron in centromeric noncoding RNA facilitates RNAi-mediated formation of heterochromatin. |
| title_full_unstemmed | The intron in centromeric noncoding RNA facilitates RNAi-mediated formation of heterochromatin. |
| title_short | The intron in centromeric noncoding RNA facilitates RNAi-mediated formation of heterochromatin. |
| title_sort | intron in centromeric noncoding rna facilitates rnai mediated formation of heterochromatin |
| url | http://europepmc.org/articles/PMC5322907?pdf=render |
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