HITS-CLIP yields genome-wide insights into brain alternative RNA processing

Details HITS-CLIP yields genome-wide insights into brain alternative RNA processing HITS-CLIP yields genome-wide insights into brain alternative RNA processing

Nov 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008natur.456..464l&link_type=abstract

Nature, Volume 456, Issue 7221, pp. 464-469 (2008).

Physics

9

Scientific paper

Protein-RNA interactions have critical roles in all aspects of gene expression. However, applying biochemical methods to understand such interactions in living tissues has been challenging. Here we develop a genome-wide means of mapping protein-RNA binding sites in vivo, by high-throughput sequencing of RNA isolated by crosslinking immunoprecipitation (HITS-CLIP). HITS-CLIP analysis of the neuron-specific splicing factor Nova revealed extremely reproducible RNA-binding maps in multiple mouse brains. These maps provide genome-wide in vivo biochemical footprints confirming the previous prediction that the position of Nova binding determines the outcome of alternative splicing; moreover, they are sufficiently powerful to predict Nova action de novo. HITS-CLIP revealed a large number of Nova-RNA interactions in 3' untranslated regions, leading to the discovery that Nova regulates alternative polyadenylation in the brain. HITS-CLIP, therefore, provides a robust, unbiased means to identify functional protein-RNA interactions in vivo.

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