help  | about  | cite  | software

      FlyMine will be off line on Tuesday 18th February 2020 for a change of server.
      Estimated downtime is 2 hours, starting at 10.00 GMT. Apologies for the inconvenience.

Publication : Seizure suppression by gain-of-function escargot mutations.

First Author  Hekmat-Scafe Daria S Year  2005
Journal  Genetics Volume  169
Pages  1477-93 PubMed ID  15654097
Abstract Text  Suppressor mutations provide potentially powerful tools for examining mechanisms underlying neurological disorders and identifying novel targets for pharmacological intervention. Here we describe mutations that suppress seizures in a Drosophila model of human epilepsy. A screen utilizing the Drosophila easily shocked (eas) "epilepsy"mutant identified dominant suppressors of seizure sensitivity. Among several mutations identified, neuronal escargot (esg) reduced eas seizures almost 90%. The esg gene encodes a member of the snail family of transcription factors. Whereas esg is normally expressed in a limited number of neurons during a defined period of nervous system development, here normal esg was expressed in all neurons and throughout development. This greatly ameliorated both the electrophysiological and the behavioral epilepsy phenotypes of eas. Neuronal esg appears to act as a general seizure suppressor in the Drosophila epilepsy model as it reduces the susceptibility of several seizure-prone mutants. We observed that esg must be ectopically expressed during nervous system development to reduce seizure susceptibility in adults. Furthermore, induction of esg in a small subset of neurons (interneurons) will reduce seizure susceptibility. A combination of microarray and computational analyses revealed 100 genes that represent possible targets of neuronal esg. We anticipate that some of these genes may ultimately serve as targets for novel antiepileptic drugs. Doi  10.1534/genetics.104.036558
Issue  3 Month  Mar

Publication Annotations Displayer

133 Entities

8 Mesh Terms