Dicer-microRNA-Myc circuit promotes transcription of hundreds of long noncoding RNAs

ABSTRACT: Long noncoding RNAs (lncRNAs) are important regulators of cell fate, and their mis-expression has been implicated in many diseases. While distinct polymerases generate messenger vs. noncoding ribosomal or tRNAs3, little is known about distinct mechanisms controlling lncRNA expression. Here we show that transcription of lncRNAs is quantitatively different from that of messenger RNAs (mRNAs)--as revealed by deficiency of Dicer (Dcr), a key ribonuclease that generates microRNAs (miRNAs). Loss of Dcr in mouse embryonic stem cells (mESCs) led surprisingly to decreased level of the majority of lncRNAs. The canonical Dgcr8-Dcr-miRNA pathway is required for robust lncRNA expression, at the level of transcriptional initiation and elongation of lncRNA genes rather than at the level of their stabilit

ORGANISM(S): Mus musculus

SUBMITTER: Kun Qu 

PROVIDER: E-GEOD-55338 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress