Screening for ENU-induced mutations in mice that result in aberrant ethanol-related phenotypes.
One way to investigate the genetic underpinnings of ethanol-related phenotypes is to create random mutations and screen the mutagenized mice for their behavioral phenotypes. The purposes of this article are to assess the efficacy of a novel high throughput screen to detect known strain differences and to provide evidence of the ability of this screen to detect phenodeviants, as illustrated by two new lines of mutant mice. All mice were tested for the following phenotypes after a dose of 2.25 g/kg of ethanol: ataxia, anxiolytic response, locomotor activity, core body temperature, and blood ethanol concentration, as well as ethanol consumption based on a two-bottle choice test. The authors obtained several baseline measures that allowed for the detection of phenodeviants on these measures as well. To validate this screen, A/J, DBA/2J, and C57BL/6J mouse strains were tested, and previously reported strain differences were found in all phenotypes except ethanol-induced hypothermia. Additionally, two mutant pedigrees were identified: 7TNJ, which exhibited abnormal ethanol-induced locomotor activity, and 112TNR, which exhibited an enhanced ability on the rotarod. These data demonstrate the efficacy of this screen to detect known as well as novel phenotypic differences.
Department of Anatomy and Neurobiology, University of Tennessee Health Science Center, 855 Monroe Avenue, Memphis, TN 38163, USA. khamre@nb.utmem.edu
Kristin M
KM
Hamre
Daniel
D
Goldowitz
Sarah
S
Wilkinson
Douglas B
DB
Matthews
D000435:Alcoholic Intoxication / Q000235:genetics* / Q000503:physiopathology*; D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects / Q000502:physiology; D004327:Drinking Behavior / Q000187:drug effects / Q000502:physiology; D005260:Female; D008124:Locomotion / Q000187:drug effects / Q000235:genetics; D008297:Male; D018782:Maze Learning / Q000187:drug effects / Q000502:physiology; D051379:Mice; D008815:Mice, Inbred Strains; D009043:Motor Activity / Q000235:genetics; D009152:Mutagenicity Tests / Q000379:methods*; D009154:Mutation / Q000187:drug effects / Q000502:physiology*; D009607:Nitrosourea Compounds / Q000494:pharmacology; D010641:Phenotype; D013045:Species Specificity; D013997:Time Factors
D009607:Nitrosourea Compounds