Chromatin-mediated alternative splicing regulates cocaine-reward behavior

Song Jun Xu, Sonia I. Lombroso, Delaney K. Fischer, Marco D. Carpenter, Dylan M. Marchione, Peter J. Hamilton, Carissa J. Lim, Rachel L. Neve, Benjamin A. Garcia, Mathieu E. Wimmer, R. Christopher Pierce, Elizabeth A. Heller

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Neuronal alternative splicing is a key gene regulatory mechanism in the brain. However, the spliceosome machinery is insufficient to fully specify splicing complexity. In considering the role of the epigenome in activity-dependent alternative splicing, we and others find the histone modification H3K36me3 to be a putative splicing regulator. In this study, we found that mouse cocaine self-administration caused widespread differential alternative splicing, concomitant with the enrichment of H3K36me3 at differentially spliced junctions. Importantly, only targeted epigenetic editing can distinguish between a direct role of H3K36me3 in splicing and an indirect role via regulation of splice factor expression elsewhere on the genome. We targeted Srsf11, which was both alternatively spliced and H3K36me3 enriched in the brain following cocaine self-administration. Epigenetic editing of H3K36me3 at Srsf11 was sufficient to drive its alternative splicing and enhanced cocaine self-administration, establishing the direct causal relevance of H3K36me3 to alternative splicing of Srsf11 and to reward behavior.

Original languageEnglish
Pages (from-to)2943-2966.e8
JournalNeuron
Volume109
Issue number18
DOIs
StatePublished - Sep 15 2021

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