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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Tg(tetO-SNCA*A53T)E2Cai
transgene insertion E2, Huaibin Cai
MGI:4420801
Summary 11 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cx1
Pitx3tm1.1Cai/Pitx3+
Tg(tetO-SNCA*A53T)E2Cai/0
involves: 129 * C57BL/6J * FVB/N MGI:5432013
cx2
Pink1tm1Zhzh/Pink1tm1Zhzh
Slc6a3tm4.1(tTA)Xz/?
Tg(tetO-SNCA*A53T)E2Cai/?
involves: 129P2/OlaHsd * 129S4/SvJaeSor * 129S6/SvEvTac * C57BL/6 MGI:5619815
cx3
Slc6a3tm4.1(tTA)Xz/Slc6a3+
Tg(tetO-SNCA*A53T)E2Cai/0
involves: 129S4/SvJaeSor * 129S6/SvEvTac * C57BL/6 MGI:5619812
cx4
Prkntm1Shn/Prkntm1Shn
Slc6a3tm4.1(tTA)Xz/?
Tg(tetO-SNCA*A53T)E2Cai/?
involves: 129S4/SvJaeSor * 129S6/SvEvTac * C57BL/6 MGI:5619814
cx5
Lrrk2tm1.1Cai/Lrrk2+
Tg(Camk2a-tTA)1Mmay/0
Tg(tetO-SNCA*A53T)E2Cai/0
involves: 129X1/SvJ * C57BL/6 MGI:4421006
cx6
Lrrk2tm1.1Cai/Lrrk2tm1.1Cai
Tg(Camk2a-tTA)1Mmay/0
Tg(tetO-SNCA*A53T)E2Cai/0
involves: 129X1/SvJ * C57BL/6 MGI:4421016
cx7
Tg(Camk2a-tTA)1Mmay/0
Tg(tetO-LRRK2)C77Cai/0
Tg(tetO-SNCA*A53T)E2Cai/0
involves: C57BL/6 MGI:4420996
cx8
Tg(Camk2a-tTA)1Mmay/0
Tg(tetO-LRRK2*)D10Cai/0
Tg(tetO-SNCA*A53T)E2Cai/0
involves: C57BL/6 MGI:4420998
cx9
Tg(Camk2a-tTA)1Mmay/0
Tg(tetO-LRRK2*G2019S)E3Cai/0
Tg(tetO-SNCA*A53T)E2Cai/0
involves: C57BL/6 MGI:4421000
cx10
Tg(Camk2a-tTA)1Mmay/0
Tg(tetO-LRRK2)C7874Cai/0
Tg(tetO-SNCA*A53T)E2Cai/0
involves: C57BL/6 MGI:4421002
cx11
Tg(Camk2a-tTA)1Mmay/0
Tg(tetO-SNCA*A53T)E2Cai/0
involves: C57BL/6 MGI:4421003


Genotype
MGI:5432013
cx1
Allelic
Composition
Pitx3tm1.1Cai/Pitx3+
Tg(tetO-SNCA*A53T)E2Cai/0
Genetic
Background
involves: 129 * C57BL/6J * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Pitx3tm1.1Cai mutation (1 available); any Pitx3 mutation (22 available)
Tg(tetO-SNCA*A53T)E2Cai mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• at 20 months
• at 20 months
• at 1 month, midbrain dopamine (mDA) neurons exhibit enlarged axon terminals compared with control cells
• at 12 months, mDA neurons exhibit perturbations of the Golgi apparatus compared with control mice
• progressive degeneration of midbrain dopamine neurons as early as 1 month
• however, there is no loss of midbrain dopamine neurons between 12 and 20 months and inhibition of Nurr1 (Nr4a2) ameliorates loss of neurons
• at 12 months, neurites exhibit reduced length and complexity compared with control neurites
• progressive degeneration of midbrain dopamine neurons as early as 1 month
• however, there is no loss of midbrain dopamine neurons between 12 and 20 months
• in the soma and neurites of midbrain dopamine neurons at 12 and 18 months
• midbrain dopamine neurons exhibit impaired
• autophagy/lysosomal pathways and ubiquitin proteasome system pathway compared with control cells
• severely impaired in the striatum

behavior/neurological
• on a rotarod at 2 months
• unsteady and shorter at 1 month
• at 1 month
• at 1 months
• however, mice fed doxycycline treatment rescues rearing impairment
• moderate starting at 2 months in an open field

cellular
• impaired autophagy/lysosome pathways in midbrain dopamine neurons

growth/size/body

hematopoietic system
• at 20 months

homeostasis/metabolism
• impaired autophagy/lysosome pathways in midbrain dopamine neurons
• at 6 months in the striatum

immune system
• at 20 months

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
Parkinson's disease DOID:14330 OMIM:PS168600
J:185958




Genotype
MGI:5619815
cx2
Allelic
Composition
Pink1tm1Zhzh/Pink1tm1Zhzh
Slc6a3tm4.1(tTA)Xz/?
Tg(tetO-SNCA*A53T)E2Cai/?
Genetic
Background
involves: 129P2/OlaHsd * 129S4/SvJaeSor * 129S6/SvEvTac * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Pink1tm1Zhzh mutation (0 available); any Pink1 mutation (43 available)
Slc6a3tm4.1(tTA)Xz mutation (1 available); any Slc6a3 mutation (66 available)
Tg(tetO-SNCA*A53T)E2Cai mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cellular
• 51% reduction of mitochondrial mass at 3 weeks of age

nervous system
• "mitochondrial inclusions are observed in in dopaminergic neurons beginning at 3 weeks of age
• inclusions average 4.2 um in diameter and are labeled by mitochondrial markers (COX1, SOD2)
• number of inclusions is approximately 1.4 inclusions per dopaminergic neuron




Genotype
MGI:5619812
cx3
Allelic
Composition
Slc6a3tm4.1(tTA)Xz/Slc6a3+
Tg(tetO-SNCA*A53T)E2Cai/0
Genetic
Background
involves: 129S4/SvJaeSor * 129S6/SvEvTac * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Slc6a3tm4.1(tTA)Xz mutation (1 available); any Slc6a3 mutation (66 available)
Tg(tetO-SNCA*A53T)E2Cai mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• 21% dopaminergic neuron loss in the substantia nigra pars compacta (SNc) by 3 months of age
• 35% loss by 6 months of age
• loss appears to stop or slow between 6 and 12 months
• dopamine turnover rate is increased by 29%
• decrease in TH (tyrosine hydroxylase) terminal staining in the dorsal, but not ventral, striatum of 12 month old mice
• 25 fold increase in enlarged axon varicosities in midbrain region at 6 weeks of age
• varicosities are approximately 10 um in diameter, are oval-shaped and have a hollowed core
• fragmented dendrites are observed in the substantia nigra pars reticulata at 6 weeks of age
• "mitochondrial inclusions" are observed in dopaminergic neurons beginning at 3 weeks of age
• inclusions are 0.5-2 um in diameter and are labeled by mitochondrial markers (COX1, SOD2)
• number of inclusions is approximately 1.6 inclusions per dopaminergic neuron at 3 weeks of age
• inclusions are distributed in soma and proximal processes of dopaminergic neurons
• inclusions are mostly restricted to substantia nigra pars compacta
• the number of inclusions is decreased by 6 months of age

growth/size/body

homeostasis/metabolism
• levels of dopamine and its metabolites (DOPA and HVA) are decreased by 54% in 7-11 month old mice in striatal tissue

cellular
• mitochondria in dopaminergic neurons appears fragmented by 6 weeks of age
• mitochondrial length is decreased by 61% in mitochondria from dopaminergic neurons, however, mitochondrial mass is similar to controls
• multiple senescent mitochondria are observed in dopaminergic neurons as compared to controls
• senescent mitochondria exhibit disordered cristae, swollen matrix and the absent outer membranes




Genotype
MGI:5619814
cx4
Allelic
Composition
Prkntm1Shn/Prkntm1Shn
Slc6a3tm4.1(tTA)Xz/?
Tg(tetO-SNCA*A53T)E2Cai/?
Genetic
Background
involves: 129S4/SvJaeSor * 129S6/SvEvTac * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Prkntm1Shn mutation (3 available); any Prkn mutation (54 available)
Slc6a3tm4.1(tTA)Xz mutation (1 available); any Slc6a3 mutation (66 available)
Tg(tetO-SNCA*A53T)E2Cai mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• "mitochondrial inclusions are observed in in dopaminergic neurons beginning at 3 weeks of age
• inclusions average 4.4 um in diameter and are labeled by mitochondrial markers (COX1, SOD2)
• number of inclusions is approximately 1.7 inclusions per dopaminergic neuron

cellular
• 57% reduction of mitochondrial mass at 3 weeks of age




Genotype
MGI:4421006
cx5
Allelic
Composition
Lrrk2tm1.1Cai/Lrrk2+
Tg(Camk2a-tTA)1Mmay/0
Tg(tetO-SNCA*A53T)E2Cai/0
Genetic
Background
involves: 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Lrrk2tm1.1Cai mutation (1 available); any Lrrk2 mutation (159 available)
Tg(Camk2a-tTA)1Mmay mutation (8 available)
Tg(tetO-SNCA*A53T)E2Cai mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• somatic alpha synuclein in neurons is apparent at 12 months
• increased microglial activation is observed in the brain at 12 months
• numbers of residual neurons is significantly lower than non transgenic controls
• significant at 12 months
• the Golgi complex shows severe fragmentation in 12 month old animals
• neurodegeneration significant at 12 months

immune system
• increased microglial activation is observed in the brain at 12 months

hematopoietic system
• increased microglial activation is observed in the brain at 12 months




Genotype
MGI:4421016
cx6
Allelic
Composition
Lrrk2tm1.1Cai/Lrrk2tm1.1Cai
Tg(Camk2a-tTA)1Mmay/0
Tg(tetO-SNCA*A53T)E2Cai/0
Genetic
Background
involves: 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Lrrk2tm1.1Cai mutation (1 available); any Lrrk2 mutation (159 available)
Tg(Camk2a-tTA)1Mmay mutation (8 available)
Tg(tetO-SNCA*A53T)E2Cai mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
N
• no apparent neurodegeneration is observed in 12-month old mice; no significant elevation of astrocytosis, microgliosis or somatic accumulation of alpha-synuclein is detected in striatum at 12 months




Genotype
MGI:4420996
cx7
Allelic
Composition
Tg(Camk2a-tTA)1Mmay/0
Tg(tetO-LRRK2)C77Cai/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)C77Cai mutation (0 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 in brains of A53T/LRRK2WT-L at 1 month compared to LRRK2WT-L animals
• increased microglial activation is observed in the brain
• A53T/LRRK2WT-L mice show significant elevation of GFAP-positive astrocytes in the striatum compared to A53T mice
• neurodegeneration is accelerated in the striatum
• increasing accumulation of alpha-synuclein is detected in cell bodies at 1 month

behavior/neurological
• mice show no apparent motor phenotype up to 6 months of age

hematopoietic system
• increased microglial activation is observed in the brain

immune system
• increased microglial activation is observed in the brain




Genotype
MGI:4420998
cx8
Allelic
Composition
Tg(Camk2a-tTA)1Mmay/0
Tg(tetO-LRRK2*)D10Cai/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*)D10Cai mutation (0 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 in A53T/KD mice compared to KD animals
• increased framentation of the Golgi complex is observed
• neuropathology is accelerated in A53T/KD mice compared to A53T mice




Genotype
MGI:4421000
cx9
Allelic
Composition
Tg(Camk2a-tTA)1Mmay/0
Tg(tetO-LRRK2*G2019S)E3Cai/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*G2019S)E3Cai mutation (1 available)
Tg(tetO-SNCA*A53T)E2Cai mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• substantial accumulation of alpha-synuclein is detected in cell bodies at 1 month
• exacerbated in the striatum compared to A53T mice at 1 month of age
• levels of microglial activation are higher than in A53T/LRRK2WT mice
• exacerbated in the striatum compared to A53T mice at 1 month of age
• levels of GFAP-positive cells are higher than in A53T/LRRK2WT mice
• the Golgi complex is drastically altered in neurons at 1 month with severely fragmented
• at 1 month, the medial/trans-Golgi in neurons is severely fragmented
• in striatal neurons at 1 month, numerous mitochondria have denser matrices and widened cristae compared to controls or A53T mice (seen with 3.5x greater frequency than in A53T mice); these mitochondria are not functional
• a significant increase in detergent-insoluble high molecular weight (HMW) alpha synuclein is detected in 1 month old mice compared to A53T age-matched mice
• exacerbated in the striatum compared to A53T mice at 1 month of age
• dramatic loss (>85%) of striatal neurons is seen in the dorsal striatum

hematopoietic system
• exacerbated in the striatum compared to A53T mice at 1 month of age
• levels of microglial activation are higher than in A53T/LRRK2WT mice

immune system
• exacerbated in the striatum compared to A53T mice at 1 month of age
• levels of microglial activation are higher than in A53T/LRRK2WT mice

cellular
• in striatal neurons at 1 month, numerous mitochondria have denser matrices and widened cristae compared to controls or A53T mice (seen with 3.5x greater frequency than in A53T mice); these mitochondria are not functional




Genotype
MGI:4421002
cx10
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
• increased microglial activation is observed in the brain
• neuron loss is detected at 6 months and later
• 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
• 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




Genotype
MGI:4421003
cx11
Allelic
Composition
Tg(Camk2a-tTA)1Mmay/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-SNCA*A53T)E2Cai mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
growth/size/body
• A53T mice weigh significantly less than non transgenic mice and Tg(tetO-SNCA*A53T)E2Cai or Tg(Camk2a-tTA)1Mmay single mutants starting at 4 months of age

behavior/neurological
• mice display elevated rearing activities at 6 months of age
• at 2 months of age, mice show drastically increased ambulatory activity

nervous system
• only a few neurons in the brain display alpha-synuclein staining in the cell body at 3 months; somatic accumulation becomes more prominent at 20 months; whereas no accumulation is detected in cell bodies at 1 month
• significant rescue of phenotype is observed when animals are treated with doxycycline to inhibit transgene expression
• significant at 12 months
• significant rescue of phenotype is observed when animals are treated with doxycycline to inhibit transgene expression
• neuron loss is detected at 6 months and later
• significant rescue of phenotype is observed when animals are treated with doxycycline to inhibit transgene expression
• neuron loss is detected at 6 months and later
• in 6 month old mice but not in nontransgenic controls, elevated levels of ubiquitin are detected in somas and nuclei of cortical neurons, but
• significant at 12 months
• significant rescue of phenotype is observed when animals are treated with doxycycline to inhibit transgene expression
• the Golgi complex is drastically altered in neurons at 1 month, appearing thinner and fragmented
• significant increase in Golgi fragmentation is observed at 6 months
• at 1 month, the medial/trans-Golgi in neurons is significantly altered with ratio of fragmented trans-Golgi significantly increased compared to non-transgenic animals
• significant rescue of phenotype is observed when animals are treated with doxycycline to inhibit transgene expression
• in striatal neurons at 1 month, numerous mitochondria have denser matrices and widened cristae compared to non-transgenic controls; these mitochondria are not functional
• a significant increase in detergent-insoluble high molecular weight (HMW) alpha synuclein is detected in 12 month old mice compared to 1 month old mice
• significant decrease in HMW alpha-synuclein in total brain homogenates is observed when animals are treated with doxycycline to inhibit transgene expression
• widespread degeneration is observed at 20 months
• age-dependent, progressive neurodegeneration occurs
• neuronal loss is detected in the frontal cortex (>80%) and dorsal striatum (>74%) at 20 months
• a significant reduction (>30%) of striatal neurons is seen at 6 months
• while 3-month old A53T mice show no abnormal neuropathology, but neuropathology is evident at 12 and 20 months
• in 6 month old mice, elevated levels of ubiquitin are detected in somas and nuclei of cortical neurons; at 20 monts, a punctate staining pattern at neuronal processes is observed
• brain homogenates contain significantly elevated levels of ubiquitinated proteins at 3 months

hematopoietic system
• significant at 12 months
• significant rescue of phenotype is observed when animals are treated with doxycycline to inhibit transgene expression

immune system
• significant at 12 months
• significant rescue of phenotype is observed when animals are treated with doxycycline to inhibit transgene expression

cellular
• in striatal neurons at 1 month, numerous mitochondria have denser matrices and widened cristae compared to non-transgenic controls; these mitochondria are not functional





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last database update
11/12/2024
MGI 6.24
The Jackson Laboratory