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Phenotypes Associated with This Genotype
Genotype
MGI:3582835
Allelic
Composition
Krastm1Bbd/Kras+
Tg(CMV-cre)1Cgn/?
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * BALB/cJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Krastm1Bbd mutation (2 available); any Kras mutation (88 available)
Tg(CMV-cre)1Cgn mutation (9 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• double mutants develop breathing difficulties after 7 - 8 months of age
• frequent embryonic lethality; however, a significant number of double mutants survive

neoplasm
• a large spectrum of multifocal lesions are seen in the lung including; small patches of bronchiolo-alveolar hyperplasias to large bronchiolo-alveolar adenomas that compress adjacent lung structures and appear to derive from type II pneumocytes
• large bronchiolo-alveolar adenocarcinomas that compress adjacent lung structures and appear to derive from type II pneumocytes
• histiocytic sarcoma and other sarcomas seen in 2 out of 20 and 3 out of 20 double mutants, respectively
• anal papillomas seen in 3 out of 20 double mutants

cellular
• MEFs expressing the oncogenic protein do not undergo proliferative senescence and proliferate continuously as immortal cells

respiratory system
• a large spectrum of multifocal lesions are seen in the lung including; small patches of bronchiolo-alveolar hyperplasias to large bronchiolo-alveolar adenomas that compress adjacent lung structures and appear to derive from type II pneumocytes
• large bronchiolo-alveolar adenocarcinomas that compress adjacent lung structures and appear to derive from type II pneumocytes
• double mutants develop breathing difficulties after 7 - 8 months of age


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
03/18/2025
MGI 6.24
The Jackson Laboratory