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Phenotypes Associated with This Genotype
Genotype
MGI:3758076
Allelic
Composition
Spp1tm1Blh/Spp1tm1Blh
Genetic
Background
B6.129S6-Spp1tm1Blh
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Spp1tm1Blh mutation (2 available); any Spp1 mutation (44 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• MPTP-treated mice exhibit decreased microglial cells with longer processes compared with similarly treated wild-type mice
• neuronal cell death in MPTP-treated homozygotes is comparable to sham-treated wildtype and significantly less than MPTP-treated wildtype, suggesting a protective effect
• MPTP-treated homozygotes exhibit an increase in the number of microglial cells, however, MPTP-treated wildtype mice exhibited a greater increase
• numbers of GFAP-positive astrocytes increased in the MPTP-treated wildtype mice, but not in MPTP-treated homozygotes or sham-treated wildtype mice
• astrocytic processes are longer in MPTP-treated homozygotes than in both MPTP-treated wildtype and sham-treated wildtype mice
• tyrosine hydroxylase (TH) positive nerve fibers in the striatum are decreased to a lesser extent in MPTP-treated homozygotes than in MPTP-treated wildtype mice
• MPTP-treated mice exhibit increased neuron and TH+ fiber survival compared to in similarly treated wild-type mice

immune system
• MPTP-treated mice exhibit decreased microglial cells with longer processes compared with similarly treated wild-type mice
• mice exhibit decreased incidence of experimental autoimmune uveoretinitis with fewer infiltrating inflammatory cells in the vitreous, decreased granulomas, and reduced lymphocyte proliferation compared with similarly treated wild-type mice
• mice exhibit decreased granulomas in a model of experimental autoimmune uveoretinitis compared with similarly treated wild-type mice

hematopoietic system
• MPTP-treated mice exhibit decreased microglial cells with longer processes compared with similarly treated wild-type mice

homeostasis/metabolism
• MPTP-treated mice exhibit increased neuron and TH+ fiber survival and decreased microglial cells with longer processes compared with similarly treated wild-type mice
• neuronal cell death in MPTP-treated homozygotes is comparable to sham-treated wildtype and significantly less than MPTP-treated wildtype, suggesting a protective effect

cellular
• MPTP-treated mice exhibit decreased microglial cells with longer processes compared with similarly treated wild-type mice
• neuronal cell death in MPTP-treated homozygotes is comparable to sham-treated wildtype and significantly less than MPTP-treated wildtype, suggesting a protective effect


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
03/25/2025
MGI 6.24
The Jackson Laboratory