Abstract
Fused in sarcoma (FUS) and splicing factor, proline- and glutamine-rich (SFPQ) are RNA binding proteins that regulate RNA metabolism. We found that alternative splicing of the Mapt gene at exon 10, which generates 4-repeat tau (4R-T) and 3-repeat tau (3R-T), is regulated by interactions between FUS and SFPQ in the nuclei of neurons. Hippocampus-specific FUS- or SFPQ-knockdown mice exhibit frontotemporal lobar degeneration (FTLD)-like behaviors, reduced adult neurogenesis, accumulation of phosphorylated tau, and hippocampal atrophy with neuronal loss through an increased 4R-T/3R-T ratio. Normalization of this increased ratio by 4R-T-specific silencing results in recovery of the normal phenotype. These findings suggest a biological link among FUS/SFPQ, tau isoform alteration, and phenotypic expression, which may function in the early pathomechanism of FTLD.
| Original language | English |
|---|---|
| Pages (from-to) | 1118-1131 |
| Number of pages | 14 |
| Journal | Cell Reports |
| Volume | 18 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 31-01-2017 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Biochemistry,Genetics and Molecular Biology