Abstract:
:CELF6 is a CELF-RNA-binding protein, and thus part of a protein family with roles in human disease; however, its mRNA targets in the brain are largely unknown. Using cross-linking immunoprecipitation and sequencing (CLIP-seq), we define its CNS targets, which are enriched for 3' UTRs in synaptic protein-coding genes. Using a massively parallel reporter assay framework, we test the consequence of CELF6 expression on target sequences, with and without mutating putative binding motifs. Where CELF6 exerts an effect on sequences, it is largely to decrease RNA abundance, which is reversed by mutating UGU-rich motifs. This is also the case for CELF3-5, with a protein-dependent effect on magnitude. Finally, we demonstrate that targets are derepressed in CELF6-mutant mice, and at least two key CNS proteins, FOS and FGF13, show altered protein expression levels and localization. Our works find, in addition to previously identified roles in splicing, that CELF6 is associated with repression of its CNS targets via the 3' UTR in vivo.
journal_name
Cell Repjournal_title
Cell reportsauthors
Rieger MA,King DM,Crosby H,Liu Y,Cohen BA,Dougherty JDdoi
10.1016/j.celrep.2020.108531subject
Has Abstractpub_date
2020-12-22 00:00:00pages
108531issue
12issn
2211-1247pii
S2211-1247(20)31520-5journal_volume
33pub_type
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