High-throughput identification of RNA nuclear enrichment sequences

We examined a pool of 11,969 oligos densely tiling 38 human lncRNAs that were fused to a cytosolic transcript. After cell fractionation and barcode sequencing, we identified 109 unique RNA regions that significantly enriched this cytosolic transcript in the nucleus including a cytosine-rich motif. These nuclear enrichment sequences are highly conserved and over-represented in global nuclear fractionation sequencing. Importantly, many of these regions were independently validated by single-molecule RNA fluorescence in situ hybridization. Overall, we demonstrate the utility of MPRNA for future investigation of RNA-based functionalities.

Source: EMBO Journal - March 15, 2018 Category: Molecular Biology Authors: Shukla, C. J., McCorkindale, A. L., Gerhardinger, C., Korthauer, K. D., Cabili, M. N., Shechner, D. M., Irizarry, R. A., Maass, P. G., Rinn, J. L. Tags: Methods & Resources, RNA Biology, Systems & Computational Biology Source Type: research