Abstract:
:Long noncoding RNAs (lncRNAs) are prevalent genes with frequently precise regulation but mostly unknown functions. Here we demonstrate that lncRNAs guide the organismal DNA damage response. DNA damage activated transcription of the DINO (Damage Induced Noncoding) lncRNA via p53. DINO was required for p53-dependent gene expression, cell cycle arrest and apoptosis in response to DNA damage, and DINO expression was sufficient to activate damage signaling and cell cycle arrest in the absence of DNA damage. DINO bound to p53 protein and promoted its stabilization, mediating a p53 auto-amplification loop. Dino knockout or promoter inactivation in mice dampened p53 signaling and ameliorated acute radiation syndrome in vivo. Thus, inducible lncRNA can create a feedback loop with its cognate transcription factor to amplify cellular signaling networks.
journal_name
Nat Genetjournal_title
Nature geneticsauthors
Schmitt AM,Garcia JT,Hung T,Flynn RA,Shen Y,Qu K,Payumo AY,Peres-da-Silva A,Broz DK,Baum R,Guo S,Chen JK,Attardi LD,Chang HYdoi
10.1038/ng.3673subject
Has Abstractpub_date
2016-11-01 00:00:00pages
1370-1376issue
11eissn
1061-4036issn
1546-1718pii
ng.3673journal_volume
48pub_type
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