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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Inpp5jtm1.1Cmit
targeted mutation 1.1, Christina A Mitchell
MGI:5789330
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Inpp5jtm1.1Cmit/Inpp5jtm1.1Cmit involves: C57BL/6 MGI:5827709
cx2
Inpp5jtm1.1Cmit/Inpp5jtm1.1Cmit
Tg(MMTV-PyVT)634Mul/0
involves: C57BL/6 MGI:5827714


Genotype
MGI:5827709
hm1
Allelic
Composition
Inpp5jtm1.1Cmit/Inpp5jtm1.1Cmit
Genetic
Background
involves: C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Inpp5jtm1.1Cmit mutation (1 available); any Inpp5j mutation (41 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
normal phenotype
• homozygotes are viable, fertile and display normal mammary gland development and no overt phenotype at 4 months of age
• no evidence of mammary gland hyperplasia is noted at 1 year of age or spontaneous mammary tumors up to 20 months of age




Genotype
MGI:5827714
cx2
Allelic
Composition
Inpp5jtm1.1Cmit/Inpp5jtm1.1Cmit
Tg(MMTV-PyVT)634Mul/0
Genetic
Background
involves: C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Inpp5jtm1.1Cmit mutation (1 available); any Inpp5j mutation (41 available)
Tg(MMTV-PyVT)634Mul mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
neoplasm
• total mammary tumor burden is significantly increased relative to that in control mice carrying the transgene on a wild-type background
• mice show significantly enhanced primary mammary cancer initiation and tumor progression relative to control mice
• tumors show increased AKT signaling
• mice show a 4.3-fold reduction in the total number of lung metastases relative to control mice
• mean volume of the largest mammary tumor per mouse and total tumor volume is significantly higher than that in control mice, and associated with increased cell proliferation as shown by Ki67 staining

cellular
• in transwell assays, epithelial tumor cells established from primary mammary tumors show a 3.5-fold decrease in relative cell migration toward a serum gradient; cell migration defect is partly rescued by treatment with a pan-AKT inhibitor (AktX), suggesting dysregulated AKT signaling

endocrine/exocrine glands
• total mammary tumor burden is significantly increased relative to that in control mice carrying the transgene on a wild-type background
• at 45 days of age, mice show a ~5-fold increase in the number of hyperplastic foci in mammary fat pads relative to control mice carrying the transgene on a wild-type background
• total area of mammary gland hyperplasia is increased by 3-fold at 45 days and by 2.4-fold at 70 days of age
• % of proliferating (Ki67+) cells is significantly increased in hyperplastic lesions at 45 and 70 days of age

integument
• total mammary tumor burden is significantly increased relative to that in control mice carrying the transgene on a wild-type background
• at 45 days of age, mice show a ~5-fold increase in the number of hyperplastic foci in mammary fat pads relative to control mice carrying the transgene on a wild-type background
• total area of mammary gland hyperplasia is increased by 3-fold at 45 days and by 2.4-fold at 70 days of age
• % of proliferating (Ki67+) cells is significantly increased in hyperplastic lesions at 45 and 70 days of age





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last database update
04/23/2024
MGI 6.23
The Jackson Laboratory