Abstract
Cultures of neuroblasts that generate abundant neurons were established from Drosophila embryos to study silencing of genes by RNA interference (RNAi). Cultured cells expressed ELAV, a marker of neurons, Futsch, a marker of neurites, and Synapsin, Synaptobrevin, and Synaptogamin, proteins involved in neurotransmitter secretion. Conditions were found for efficient transfection of cells with siRNAs for ELAV or the insulin-like receptor, which resulted in marked decreases in neurons that express ELAV and Futsch. Cells also were successfully transfected with long-chain Sox-Neuro dsRNA resulting in a 55% reduction of neurons expressing Futsch. The results suggest that this cultured neural cell system can be used to study RNAi-dependent silencing of genes involved in many kinds of neural functions.
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