The Long Noncoding Rna Sprightly Acts As An Intranuclear Organizing Hub For Pre-Mrna Molecules

Abstract

Molecular mechanisms by which long noncoding RNA (lncRNA) molecules may influence cancerous condition are poorly understood. The aberrant expression of SPRIGHTLY lncRNA, encoded within the drosophila gene homolog Sprouty-4 intron, is correlated with a variety of cancers, including human melanomas. We demonstrate by SHAPEseq and dChIRP that SPRIGHTLY RNA secondary structure has a core pseudoknotted domain. This lncRNA interacts with the intronic regions of six pre-mRNAs: SOX5, SMYD3, SND1, MEOX2, DCTN6, and RASAL2, all of which have cancer-related functions. Hemizygous knockout of SPRIGHTLY by CRISPR (clustered regularly interspaced short palindromic repeats)/Cas9 in melanoma cells significantly decreases SPRIGHTLY lncRNA levels, simultaneously decreases the levels of its interacting pre-mRNA molecules, and decreases anchorage-independent growth rate of cells and the rate of in vivo tumor growth in mouse xenografts. These results provide the first demonstration of an lncRNA's threedimensional coordinating role in facilitating cancer-related gene expression in human melanomas. 2017

Publication Date

5-1-2017

Publication Title

Science Advances

Volume

3

Issue

5

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1126/sciadv.1602505

Socpus ID

85041484189 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85041484189

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