Abstract:
:Genome stability relies on proper coordination of mitosis and cytokinesis, where dynamic microtubules capture and faithfully segregate chromosomes into daughter cells. With a high-content RNAi imaging screen targeting more than 2,000 human lncRNAs, we identify numerous lncRNAs involved in key steps of cell division such as chromosome segregation, mitotic duration and cytokinesis. Here, we provide evidence that the chromatin-associated lncRNA, linc00899, leads to robust mitotic delay upon its depletion in multiple cell types. We perform transcriptome analysis of linc00899-depleted cells and identify the neuronal microtubule-binding protein, TPPP/p25, as a target of linc00899. We further show that linc00899 binds TPPP/p25 and suppresses its transcription. In cells depleted of linc00899, upregulation of TPPP/p25 alters microtubule dynamics and delays mitosis. Overall, our comprehensive screen uncovers several lncRNAs involved in genome stability and reveals a lncRNA that controls microtubule behaviour with functional implications beyond cell division.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Stojic L,Lun ATL,Mascalchi P,Ernst C,Redmond AM,Mangei J,Barr AR,Bousgouni V,Bakal C,Marioni JC,Odom DT,Gergely Fdoi
10.1038/s41467-020-14978-7subject
Has Abstractpub_date
2020-04-15 00:00:00pages
1851issue
1issn
2041-1723pii
10.1038/s41467-020-14978-7journal_volume
11pub_type
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