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Phenotypes Associated with This Genotype
Genotype
MGI:3718400
Allelic
Composition
Mapttm1Hnd/Mapttm1Hnd
Genetic
Background
involves: 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Mapttm1Hnd mutation (7 available); any Mapt mutation (428 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• severity is reduced and seizure onset is delayed after pentylenetetrazole treatment compared to wild-type mice
• mice are resistant to kainate-induced seizures over a larger range of doses than wild-type mice
• neuronal cultures from E16 mice show less axonal extension than wild-type neurons; mutant neurons lag behind wild-type in development over initial 2 days in culture, then catch up, but total sum of minor processes/axonal lengths is less than wild-type
• between 4 and 7 days in culture, total dendritic length of mutant neurons is less than in wild-type; after 7 days in culture, neurons still lag behind wild-type showing more developmental delay

behavior/neurological
• severity is reduced and seizure onset is delayed after pentylenetetrazole treatment compared to wild-type mice
• mice are resistant to kainate-induced seizures over a larger range of doses than wild-type mice

cellular
• neuronal cultures from E16 mice show less axonal extension than wild-type neurons; mutant neurons lag behind wild-type in development over initial 2 days in culture, then catch up, but total sum of minor processes/axonal lengths is less than wild-type


Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
04/30/2024
MGI 6.23
The Jackson Laboratory