Journal
EMBO REPORTS
Volume 13, Issue 8, Pages 759-764Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/embor.2012.90
Keywords
neurodegeneration; FUS; RNA-binding protein; splicing; Tau (MAPT)
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Funding
- Helmholtz Young Investigator program [HZ-NG-607]
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A subset of amyotrophic lateral sclerosis (ALS) and frontotemporal lobar degeneration (FTLD) patients present pathological redistribution and aggregation of the nuclear protein fused in sarcoma (FUS) in the cytoplasm. Although FUS associates with the spliceosomal complex, no endogenous neuronal splicing targets have been identified. Here we identify Tau mRNA as a physiological splicing target of FUS. In mouse brain, FUS directly binds to Tau pre-mRNA, and knockdown of FUS in hippocampal neurons leads to preferential inclusion of Tau exons 3 and 10. FUS knockdown causes significant growth cone enlargement and disorganization reminiscent of Tau loss of function. These findings suggest that disturbed cytoskeletal function and enhanced expression of the neurodegeneration-associated Tau exon 10 might contribute to FTLD/ALS with FUS inclusions.
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