Abstract:
:MicroRNAs (miRNAs) are critical to somatic cell reprogramming into induced pluripotent stem cells (iPSCs), however, exactly how miRNA expression changes support the transition to pluripotency requires further investigation. Here we use a murine secondary reprogramming system to sample cellular trajectories towards iPSCs or a novel pluripotent 'F-class' state and perform small RNA sequencing. We detect sweeping changes in an early and a late wave, revealing that distinct miRNA milieus characterize alternate states of pluripotency. miRNA isoform expression is common but surprisingly varies little between cell states. Referencing other omic data sets generated in parallel, we find that miRNA expression is changed through transcriptional and post-transcriptional mechanisms. miRNA transcription is commonly regulated by dynamic histone modification, while DNA methylation/demethylation consolidates these changes at multiple loci. Importantly, our results suggest that a novel subset of distinctly expressed miRNAs supports pluripotency in the F-class state, substituting for miRNAs that serve such roles in iPSCs.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Clancy JL,Patel HR,Hussein SM,Tonge PD,Cloonan N,Corso AJ,Li M,Lee DS,Shin JY,Wong JJ,Bailey CG,Benevento M,Munoz J,Chuah A,Wood D,Rasko JE,Heck AJ,Grimmond SM,Rogers IM,Seo JS,Wells CA,Puri MC,Nagy A,Preissdoi
10.1038/ncomms6522subject
Has Abstractpub_date
2014-12-10 00:00:00pages
5522issn
2041-1723pii
ncomms6522journal_volume
5pub_type
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