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We expressed SID-1, a transmembrane protein from Caenorhabditis elegans that is required for systemic RNA interference (RNAi), in C. elegans neurons. This expression increased the response of neurons to double-stranded (ds)RNA delivered by feeding. Mutations in the lin-15b and lin-35 genes enhanced this effect. Worms expressing neuronal SID-1 showed RNAi phenotypes when fed with bacteria expressing dsRNA for known neuronal genes and for uncharacterized genes with no previously known neuronal phenotypes. Neuronal expression of sid-1 decreased nonneuronal RNAi, suggesting that neurons expressing transgenic sid-1(+) served as a sink for dsRNA. This effect, or a sid-1(-) background, can be used to uncover neuronal defects for lethal genes. Expression of sid-1(+) from cell-specific promoters in sid-1 mutants results in cell-specific feeding RNAi. We used these strains to identify a role for integrin signaling genes in mechanosensation.
Pubmed ID: 20512143 RIS Download
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Central data repository for nematode biology including complete genomic sequence, gene predictions and orthology assignments from range of related nematodes.Data concerning genetics, genomics and biology of C. elegans and related nematodes. Derived from initial ACeDB database of C. elegans genetic and sequence information, WormBase includes genomic, anatomical and functional information of C. elegans, other Caenorhabditis species and other nematodes. Maintains public FTP site where researchers can find many commonly requested files and datasets, WormBase software and prepackaged databases.
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