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Phenotypes Associated with This Genotype
Genotype
MGI:6093700
Allelic
Composition
Tgfb1i1tm1.2Cet/Tgfb1i1tm1.2Cet
Tg(MMTV-PyVT)634Mul/0
Genetic
Background
involves: 129S/SvEv * C57BL/6 * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Tgfb1i1tm1.2Cet mutation (1 available); any Tgfb1i1 mutation (24 available)
Tg(MMTV-PyVT)634Mul mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
neoplasm
• onset of palpable mammary tumor formation is slightly delayed and growth of the primary tumor is reduced compared to control heterozygous Tgfb1i1tm1.1Cet Tg(MMTV-PyVT)634Mul mice
• tumor stroma contains fewer cancer-associated fibroblasts and reduced extracellular matrix deposition
• isolated cancer-associated fibroblasts are defective in stress fiber organization and exhibit reduced contractility
• more than 2-fold reduction in the number of proliferating cells in mammary tumors
• mammary tumors exhibit fewer lung metastases than controls

endocrine/exocrine glands
• onset of palpable mammary tumor formation is slightly delayed and growth of the primary tumor is reduced compared to control heterozygous Tgfb1i1tm1.1Cet Tg(MMTV-PyVT)634Mul mice
• tumor stroma contains fewer cancer-associated fibroblasts and reduced extracellular matrix deposition
• isolated cancer-associated fibroblasts are defective in stress fiber organization and exhibit reduced contractility
• more than 2-fold reduction in the number of proliferating cells in mammary tumors

integument
• onset of palpable mammary tumor formation is slightly delayed and growth of the primary tumor is reduced compared to control heterozygous Tgfb1i1tm1.1Cet Tg(MMTV-PyVT)634Mul mice
• tumor stroma contains fewer cancer-associated fibroblasts and reduced extracellular matrix deposition
• isolated cancer-associated fibroblasts are defective in stress fiber organization and exhibit reduced contractility
• more than 2-fold reduction in the number of proliferating cells in mammary tumors


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
03/31/2026
MGI 6.24
The Jackson Laboratory