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Phenotypes Associated with This Genotype
Genotype
MGI:5287852
Allelic
Composition
Smn1tm1Jme/Smn1tm1Jme
Tg(Eno2-cre)39Jme/0
Genetic
Background
involves: 129 * C57BL/6J * SJL
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Smn1tm1Jme mutation (3 available); any Smn1 mutation (86 available)
Tg(Eno2-cre)39Jme mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mutants die at an average of 31 days of age

nervous system
• progressive degeneration of motor nerves beginning at 20 days of age, with about 35% loss at 30 days in the phrenic nerve and about 45% in the facial nerve
• progressive degeneration is also seen in the trochlear nuclei and in the motoneurons of the spinal cord
• however, no loss of trigeminal or hypoglossal motoneurons is observed
• progressive degeneration of the facial nerve such that at 30 days, 45% loss is observed
• progressive degeneration of the phrenic nerves such that at 30 days, 35% loss is observed
• progressive axon degeneration that begins at 20 days of age

behavior/neurological
• mutants exhibit motor defects at two weeks of age

growth/size/body
• mutants exhibit weight loss at two weeks of age

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
Werdnig-Hoffmann disease DOID:13137 OMIM:253300
J:89836


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
03/12/2024
MGI 6.23
The Jackson Laboratory