Regulating gene expression through RNA nuclear retention - PubMed (original) (raw)
. 2005 Oct 21;123(2):249-63.
doi: 10.1016/j.cell.2005.08.033.
Affiliations
- PMID: 16239143
- DOI: 10.1016/j.cell.2005.08.033
Free article
Regulating gene expression through RNA nuclear retention
Kannanganattu V Prasanth et al. Cell. 2005.
Free article
Abstract
Multiple mechanisms have evolved to regulate the eukaryotic genome. We have identified CTN-RNA, a mouse tissue-specific approximately 8 kb nuclear-retained poly(A)+ RNA that regulates the level of its protein-coding partner. CTN-RNA is transcribed from the protein-coding mouse cationic amino acid transporter 2 (mCAT2) gene through alternative promoter and poly(A) site usage. CTN-RNA is diffusely distributed in nuclei and is also localized to paraspeckles. The 3'UTR of CTN-RNA contains elements for adenosine-to-inosine editing, involved in its nuclear retention. Interestingly, knockdown of CTN-RNA also downregulates mCAT2 mRNA. Under stress, CTN-RNA is posttranscriptionally cleaved to produce protein-coding mCAT2 mRNA. Our findings reveal a role of the cell nucleus in harboring RNA molecules that are not immediately needed to produce proteins but whose cytoplasmic presence is rapidly required upon physiologic stress. This mechanism of action highlights an important paradigm for the role of a nuclear-retained stable RNA transcript in regulating gene expression.
Comment in
- A nuclear RNA is cut out for translation.
Bass BL, Hellwig S, Hundley HA. Bass BL, et al. Cell. 2005 Oct 21;123(2):181-3. doi: 10.1016/j.cell.2005.10.009. Cell. 2005. PMID: 16239133 Free PMC article.
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