A Broad Set of Chromatin Factors Influences Splicing

Allemand, E., Myers, M. P., Garcia-Bernardo, J., Harel-Bellan, A., Krainer, A. R., Muchardt, C. (September 2016) A Broad Set of Chromatin Factors Influences Splicing. PLoS Genet, 12 (9). e1006318. ISSN 1553-7404 (Electronic)1553-7390 (Linking)

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URL: https://www.ncbi.nlm.nih.gov/pubmed/27662573
DOI: 10.1371/journal.pgen.1006318

Abstract

Several studies propose an influence of chromatin on pre-mRNA splicing, but it is still unclear how widespread and how direct this phenomenon is. We find here that when assembled in vivo, the U2 snRNP co-purifies with a subset of chromatin-proteins, including histones and remodeling complexes like SWI/SNF. Yet, an unbiased RNAi screen revealed that the outcome of splicing is influenced by a much larger variety of chromatin factors not all associating with the spliceosome. The availability of this broad range of chromatin factors impacting splicing further unveiled their very context specific effect, resulting in either inclusion or skipping, depending on the exon under scrutiny. Finally, a direct assessment of the impact of chromatin on splicing using an in vitro co-transcriptional splicing assay with pre-mRNAs transcribed from a nucleosomal template, demonstrated that chromatin impacts nascent pre-mRNP in their competence for splicing. Altogether, our data show that numerous chromatin factors associated or not with the spliceosome can affect the outcome of splicing, possibly as a function of the local chromatin environment that by default interferes with the efficiency of splicing.

Item Type: Paper
Subjects: bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > Chromatin dynamics
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > RNA splicing
CSHL Authors:
Communities: CSHL labs > Krainer lab
Depositing User: Matt Covey
Date: 23 September 2016
Date Deposited: 28 Sep 2016 19:22
Last Modified: 29 Nov 2016 17:22
PMCID: PMC5035054
Related URLs:
URI: http://repository.cshl.edu/id/eprint/33550

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