mortality/aging
• no homozygotes are born, indicating prenatal lethality
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Allele Symbol Allele Name Allele ID |
Ubap1em1Yta endonuclease-mediated mutation 1, Yoshihisa Takiyama MGI:7414300 |
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Summary |
2 genotypes
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♀ | phenotype observed in females |
♂ | phenotype observed in males |
N | normal phenotype |
• no homozygotes are born, indicating prenatal lethality
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♀ | phenotype observed in females |
♂ | phenotype observed in males |
N | normal phenotype |
• mice develop progressive spastic gait, with normal gait at 2 months of age but with an increase in the numbers of slips and falls at 3 months of age and show gait differences at 6 months of age
• - mice exhibit difficulty crossing a beam at 6 months of age
• mice show a decrease in foot-base-angle at 3 months of age; the foot-base-angle is decreased to about 65 degrees at 3 months of age and progressively decreases with growth to about 50 degrees at 6 months of age
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• mice show a decrease in the ability to grasp sticks with the hind limbs, indicating hind limb muscle weakness
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• mice develop progressive spastic gait
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• mice exhibit smaller endosomes and an increase in vesicle number in spinal cord neurons and alternations in distribution of Rab proteins suggesting abnormal endosome formation and fusion
• lumbar spinal cord neurons show an accumulation of ubiquitinated proteins and autophagosomes which co-localize
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• the number of neurons in the spinal cord is reduced in 7-month-old mice
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• 7-month-old mice exhibit hypertrophy of the anterior horn cells
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• myelinated fibers in the spinal cord are distributed unimodally, with small 7 um fibers being most abundant compared to bimodally distributed fibers with 7 um and 10 um fibers being most abundant in wild-type mice, indicating selective loss of thick myelinated fibers close to the spinal cord surface and axonal degeneration
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• lumbar spinal cord neurons show an accumulation of autophagosomes which co-localize with the aggregated ubiquitinated proteins, indicating autophagy dysfunction
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• lumbar spinal cord neurons show an accumulation of autophagosomes which co-localize with the aggregated ubiquitinated proteins, indicating autophagy dysfunction
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Mouse Models of Human Disease |
DO ID | OMIM ID(s) | Ref(s) | |
hereditary spastic paraplegia 80 | DOID:0112341 |
OMIM:618418 |
J:332139 |
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 12/10/2024 MGI 6.24 |
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