Abstract:
:The human genome contains some thousands of long non coding RNAs (lncRNAs). Many of these transcripts are presently considered crucial regulators of gene expression and functionally implicated in developmental processes in Eukaryotes. Notably, despite a huge number of lncRNAs are expressed in the Central Nervous System (CNS), only a few of them have been characterized in terms of molecular structure, gene expression regulation and function. In the present study, we identify linc-NeD125 as a novel cytoplasmic, neuronal-induced long intergenic non coding RNA (lincRNA). Linc-NeD125 represents the host gene for miR-125b-1, a microRNA with an established role as negative regulator of human neuroblastoma cell proliferation. Here, we demonstrate that these two overlapping non coding RNAs are coordinately induced during in vitro neuronal differentiation, and that their expression is regulated by different mechanisms. While the production of miR-125b-1 relies on transcriptional regulation, linc-NeD125 is controlled at the post-transcriptional level, through modulation of its stability. We also demonstrate that linc-NeD125 functions independently of the hosted microRNA, by reducing cell proliferation and activating the antiapoptotic factor BCL-2.
journal_name
RNA Bioljournal_title
RNA biologyauthors
Bevilacqua V,Gioia U,Di Carlo V,Tortorelli AF,Colombo T,Bozzoni I,Laneve P,Caffarelli Edoi
10.1080/15476286.2015.1096488subject
Has Abstractpub_date
2015-01-01 00:00:00pages
1323-37issue
12eissn
1547-6286issn
1555-8584journal_volume
12pub_type
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