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- W4294992200 abstract "Abstract TENTs generate miRNA isoforms by 3’ tailing. However, little is known about how tailing regulates miRNA function. Here, we generate isogenic HEK293T cell lines in which TENT2, TUT4 and TUT7 are knocked out individually or in combination. Together with rescue experiments, we characterize TENT-specific effects by deep sequencing, Northern blot and in vitro assays. We find that 3’ tailing is not random but highly specific. In addition to its known adenylation, TENT2 contributes to guanylation and uridylation on mature miRNAs. TUT4 uridylates most miRNAs whereas TUT7 is dispensable. Removing adenylation has a marginal impact on miRNA levels. By contrast, abolishing uridylation leads to dysregulation of a set of miRNAs. Besides let-7, miR-181b and miR-222 are negatively regulated by TUT4/7 via distinct mechanisms while the miR-888 cluster is upregulated specifically by TUT7. Our results uncover the selective actions of TENTs in generating 3’ isomiRs and pave the way to investigate their functions." @default.
- W4294992200 created "2022-09-09" @default.
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- W4294992200 date "2022-09-07" @default.
- W4294992200 modified "2023-10-18" @default.
- W4294992200 title "TENT2, TUT4, and TUT7 selectively regulate miRNA sequence and abundance" @default.
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- W4294992200 doi "https://doi.org/10.1038/s41467-022-32969-8" @default.
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