Abstract
Fused in sarcoma (FUS) is an RNA binding protein that is involved in frontotemporal lobar degeneration (FTLD) and amyotrophic lateral sclerosis (ALS). To establish the common marmoset (Callithrix jacchus) as a model for FTLD, we generated a stereotaxic injection-based marmoset model of FUS-silencing. We designed shRNAs against the marmoset FUS gene and generated an AAV9 virus encoding the most effective shRNA against FUS (shFUS). The AAV encoding shFUS (AAV-shFUS) was introduced into the frontal cortex of young adult marmosets, whereas AAV encoding a control shRNA was injected into the contralateral side. We obtained approximately 70–80% silencing of FUS following AAV-shFUS injection. Interestingly, FUS-silencing provoked a proliferation of astrocytes and microglias. Since FTLD is characterized by various emotional deficits, it would be helpful to establish a marmoset model of FUS-silencing in various brain tissues for investigating the pathomechanism of higher cognitive and behavioral dysfunction.
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