About   Help   FAQ
Phenotypes Associated with This Genotype
Genotype
MGI:4421002
Allelic
Composition
Tg(Camk2a-tTA)1Mmay/0
Tg(tetO-LRRK2)C7874Cai/0
Tg(tetO-SNCA*A53T)E2Cai/0
Genetic
Background
involves: C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Tg(Camk2a-tTA)1Mmay mutation (8 available)
Tg(tetO-LRRK2)C7874Cai mutation (2 available)
Tg(tetO-SNCA*A53T)E2Cai mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• increasing accumulation of alpha-synuclein is detected in cell bodies at 1 month compared to A53T/LRRK2WT-L animals
• A53T/LRRK2WT mice show significant elevation of GFAP-positive astrocytes in the striatum compared to A53T mice
• more GFAP-positive astrocytes are found in the brain than in A53T/LRRK2WT-L brains
• increased microglial activation is observed in the brain
• neuron loss is detected at 6 months and later
• the Golgi complex is drastically altered in neurons at 1 month with severely fragmented cis-Golgi
• at 1 month, the medial/trans-Golgi in neurons is severely fragmented
• neurodegeneration is accelerated in the striatum
• dramatic loss (>80%) of striatal neurons is seen in the dorsal striatum
• most degenerating neurons are striatal medium-sized spiny neurons (MSN)
• neuropathology is accelerated in mice compared to A53T mice
• in 6 month old mice, elevated levels of ubiquitin are detected in somas and nuclei of cortical neurons; levels of alpha-synuclein and ubiquitin are slightly higher than in A53T mutant mice
• brain homogenates contain significantly elevated levels of ubiquitinated proteins at 3 months

immune system
• increased microglial activation is observed in the brain

hematopoietic system
• increased microglial activation is observed in the brain

cellular
• A53T/LRRK2WT mice show significant elevation of GFAP-positive astrocytes in the striatum compared to A53T mice
• more GFAP-positive astrocytes are found in the brain than in A53T/LRRK2WT-L brains
• increased microglial activation is observed in the brain


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)
Citing These Resources
Funding Information
Warranty Disclaimer, Privacy Notice, Licensing, & Copyright
Send questions and comments to User Support.
last database update
03/18/2025
MGI 6.24
The Jackson Laboratory