Searching the Resource Information Network
Although neurons are highly polarized, how neuronal polarity is generated remains poorly understood. An evolutionarily conserved inositol-producing enzyme myo-inositol monophosphatase (IMPase) is essential for polarized localization of synaptic molecules in Caenorhabditis elegans and can be inhibited by lithium, a drug for bipolar disorder. The synaptic defect of IMPase mutants causes defects in sensory behaviors including thermotaxis. Here we show that the abnormalities of IMPase mutants can be suppressed by mutations in two enzymes, phospholipase Cβ or synaptojanin, which presumably reduce the level of membrane phosphatidylinositol 4,5-bisphosphate (PIP(2)). We also found that mutations in phospholipase Cβ conferred resistance to lithium treatment. Our results suggest that reduction of PIP(2) on plasma membrane is a major cause of abnormal synaptic polarity in IMPase mutants and provide the first in vivo evidence that lithium impairs neuronal PIP(2) synthesis through inhibition of IMPase. We propose that the PIP(2) signaling regulated by IMPase plays a novel and fundamental role in the synaptic polarity.
Pubmed ID: 22446320
Publication data is provided by the National Library of Medicine ® and PubMed ®. Data is retrieved from PubMed ® on a weekly schedule. For terms and conditions see the National Library of Medicine Terms and Conditions.
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.
View all literature mentionsCore facility which provides custom TALEN and Crispr-Cas9 DNA nucleases to induce targeted mutations in a genomic region of interest. It also provides hardware, reagents, and expertise for optimizing and performing HRMA for genes of interest.
View all literature mentionsCaenorhabditis elegans with name wip-1(ok2435) III/hT2 [bli-4(e937) let-?(q782) qIs48] (I;III). from WB.
View all literature mentionsCaenorhabditis elegans with name ttx-7(nj40) I. from WB.
View all literature mentionsCaenorhabditis elegans with name atl-1(ok1063) V. from WB.
View all literature mentionsCaenorhabditis elegans with name atm-1(gk186) I. from WB.
View all literature mentionsThe SciCrunch Infrastructure was developed as a cooperative data platform to be used by diverse communities in making data more FAIR.
scicrunch.org
