All Phenotypes Kras<tm2Bbd> MGI Mouse

About Help FAQ

Phenotypes associated with this allele

Allele Symbol
Allele Name
Allele ID

Kras^tm2Bbd
targeted mutation 2, Mariano Barbacid
MGI:4844115

Summary

4 genotypes

Jump to	Allelic Composition	Genetic Background	Genotype ID
cn1	Cdk2^tm2Sgo/Cdk2^tm2Sgo Kras^tm1Bbd/Kras^tm2Bbd Polr2a^{tm1(cre/ERT2)Bbd}/Polr2a^{tm1(cre/ERT2)Bbd}	involves: 129S1/Sv * 129X1/SvJ	MGI:4844189
cn2	Kras^tm1Bbd/Kras^tm2Bbd Polr2a^{tm1(cre/ERT2)Bbd}/Polr2a^{tm1(cre/ERT2)Bbd}	involves: 129S1/Sv * 129X1/SvJ	MGI:4844190
cn3	Cdk4^tm2.1Bbd/Cdk4^tm2.1Bbd Kras^tm1Bbd/Kras^tm2Bbd Polr2a^{tm1(cre/ERT2)Bbd}/Polr2a^{tm1(cre/ERT2)Bbd}	involves: 129S1/Sv * 129X1/SvJ	MGI:4844191
cn4	Cdk4^tm2.2Bbd/Cdk4^tm2.1Bbd Kras^tm1Bbd/Kras^tm2Bbd Polr2a^{tm1(cre/ERT2)Bbd}/Polr2a^{tm1(cre/ERT2)Bbd}	involves: 129S1/Sv * 129X1/SvJ	MGI:4844192

Allelic Composition	Cdk2^tm2Sgo/Cdk2^tm2Sgo Kras^tm1Bbd/Kras^tm2Bbd Polr2a^{tm1(cre/ERT2)Bbd}/Polr2a^{tm1(cre/ERT2)Bbd}
Genetic Background	involves: 129S1/Sv * 129X1/SvJ

Find Mice

Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cdk2^tm2Sgo mutation (1 available); any Cdk2 mutation (17 available)
Kras^tm1Bbd mutation (2 available); any Kras mutation (76 available)
Kras^tm2Bbd mutation (0 available); any Kras mutation (76 available)
Polr2a^{tm1(cre/ERT2)Bbd} mutation (3 available); any Polr2a mutation (92 available)

♀	phenotype observed in females
♂	phenotype observed in males
N	normal phenotype

mortality/aging

premature death ( J:161780 )

• tamoxifen-treated mice exhibit an increase in lifespan compared with similarly treated Kras^tm1Bbd/Kras⁺ Polr2a^{tm1(cre/ERT2)Bbd}/Polr2a^{tm1(cre/ERT2)Bbd} littermates

neoplasm

decreased tumor incidence ( J:161780 )

• tamoxifen-treated mice exhibit reduced tumor burden and tumor grade compared with similarly treated Kras^tm1Bbd/Kras⁺ Polr2a^{tm1(cre/ERT2)Bbd}/Polr2a^{tm1(cre/ERT2)Bbd} mice

Allelic Composition	Kras^tm1Bbd/Kras^tm2Bbd Polr2a^{tm1(cre/ERT2)Bbd}/Polr2a^{tm1(cre/ERT2)Bbd}
Genetic Background	involves: 129S1/Sv * 129X1/SvJ

Find Mice

Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Kras^tm1Bbd mutation (2 available); any Kras mutation (76 available)
Kras^tm2Bbd mutation (0 available); any Kras mutation (76 available)
Polr2a^{tm1(cre/ERT2)Bbd} mutation (3 available); any Polr2a mutation (92 available)

♀	phenotype observed in females
♂	phenotype observed in males
N	normal phenotype

mortality/aging

premature death ( J:161780 )

• 50% survival for tamoxifen-treated mice is 25 weeks compared with 42 weeks for similarly treated Kras^tm1Bbd/Kras⁺ Polr2a^{tm1(cre/ERT2)Bbd}/Polr2a^{tm1(cre/ERT2)Bbd} littermates

neoplasm

increased lung tumor incidence ( J:161780 )

• lung tumors in tamoxifen-treated mice are more aggressive than in similarly treated Kras^tm1Bbd/Kras⁺ Polr2a^{tm1(cre/ERT2)Bbd}/Polr2a^{tm1(cre/ERT2)Bbd} mice

• however, treatment with the Cdk4 inhibitor PD0332991 reduces tumor formation

increased lung non-small cell carcinoma incidence ( J:161780 )

• in mice treated with tamoxifen

cellular

increased cell proliferation ( J:161780 )

• proliferation of lung cells in tamoxifen-treated mice exhibit 8- to 10-fold greater proliferation than in Cdk4^tm2.1Bbd/Cdk4^tm2.1Bbd Kras^tm1Bbd/Kras^tm2Bbd Polr2a^{tm1(cre/ERT2)Bbd}/Polr2a^{tm1(cre/ERT2)Bbd} mice

respiratory system

increased lung tumor incidence ( J:161780 )

• lung tumors in tamoxifen-treated mice are more aggressive than in similarly treated Kras^tm1Bbd/Kras⁺ Polr2a^{tm1(cre/ERT2)Bbd}/Polr2a^{tm1(cre/ERT2)Bbd} mice

• however, treatment with the Cdk4 inhibitor PD0332991 reduces tumor formation

increased lung non-small cell carcinoma incidence ( J:161780 )

• in mice treated with tamoxifen

Mouse Models of Human Disease		DO ID	OMIM ID(s)	Ref(s)
lung cancer		DOID:1324	OMIM:211980 OMIM:608935 OMIM:612571 OMIM:612593 OMIM:614210	J:161780

Allelic Composition	Cdk4^tm2.1Bbd/Cdk4^tm2.1Bbd Kras^tm1Bbd/Kras^tm2Bbd Polr2a^{tm1(cre/ERT2)Bbd}/Polr2a^{tm1(cre/ERT2)Bbd}
Genetic Background	involves: 129S1/Sv * 129X1/SvJ

Find Mice

Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cdk4^tm2.1Bbd mutation (1 available); any Cdk4 mutation (57 available)
Kras^tm1Bbd mutation (2 available); any Kras mutation (76 available)
Kras^tm2Bbd mutation (0 available); any Kras mutation (76 available)
Polr2a^{tm1(cre/ERT2)Bbd} mutation (3 available); any Polr2a mutation (92 available)

♀	phenotype observed in females
♂	phenotype observed in males
N	normal phenotype

neoplasm

decreased tumor growth/size ( J:161780 )

• lung cells in tamoxifen-treated mice exhibit 8- to 10-fold reduction in proliferation and early senescence compared to in similarly treated Kras^tm1Bbd/Kras^tm2Bbd Polr2a^{tm1(cre/ERT2)Bbd}/Polr2a^{tm1(cre/ERT2)Bbd} mice

increased adenocarcinoma incidence ( J:161780 )

• tamoxifen-treated mice exhibit adenocarcinomas that are not as severe as in Kras^tm1Bbd/Kras^tm2Bbd Polr2a^{tm1(cre/ERT2)Bbd}/Polr2a^{tm1(cre/ERT2)Bbd} mice

cellular

decreased cell proliferation ( J:161780 )

• proliferation of lung cells in tamoxifen-treated mice exhibit 8- to 10-fold less proliferation than in similarly treated Kras^tm1Bbd/Kras^tm2Bbd Polr2a^{tm1(cre/ERT2)Bbd}/Polr2a^{tm1(cre/ERT2)Bbd} mice

early cellular replicative senescence ( J:161780 )

• tamoxifen-treated mice exhibit increased cell replicative senescence in the lungs compared to in similarly treated Kras^tm1Bbd/Kras^tm2Bbd Polr2a^{tm1(cre/ERT2)Bbd}/Polr2a^{tm1(cre/ERT2)Bbd} mice

Allelic Composition	Cdk4^tm2.2Bbd/Cdk4^tm2.1Bbd Kras^tm1Bbd/Kras^tm2Bbd Polr2a^{tm1(cre/ERT2)Bbd}/Polr2a^{tm1(cre/ERT2)Bbd}
Genetic Background	involves: 129S1/Sv * 129X1/SvJ

Find Mice

Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cdk4^tm2.1Bbd mutation (1 available); any Cdk4 mutation (57 available)
Cdk4^tm2.2Bbd mutation (0 available); any Cdk4 mutation (57 available)
Kras^tm1Bbd mutation (2 available); any Kras mutation (76 available)
Kras^tm2Bbd mutation (0 available); any Kras mutation (76 available)
Polr2a^{tm1(cre/ERT2)Bbd} mutation (3 available); any Polr2a mutation (92 available)

♀	phenotype observed in females
♂	phenotype observed in males
N	normal phenotype

neoplasm

decreased tumor growth/size ( J:161780 )

• tamoxifen-treated mice infected with a flp-expressing adenovirus exhibit decreased proliferation and early senescence of tumor cells compared with tamoxifen and infected with GFP-expressing adenovirus

decreased tumor incidence ( J:161780 )

• tamoxifen-treated mice infected with a flp-expressing adenovirus exhibit reduced lesions compared to in mice treated with tamoxifen and infected with GFP-expressing adenovirus

increased tumor incidence ( J:161780 )

• in tamoxifen-treated mice as in similarly treated Kras^tm1Bbd/Kras^tm2Bbd Polr2a^{tm1(cre/ERT2)Bbd}/Polr2a^{tm1(cre/ERT2)Bbd} mice

cellular

decreased cell proliferation ( J:161780 )

• tamoxifen-treated mice infected with a flp-expressing adenovirus exhibit early senescence of tumor cells compared with tamoxifen and infected with GFP-expressing adenovirus

early cellular replicative senescence ( J:161780 )

• tamoxifen-treated mice infected with a flp-expressing adenovirus exhibit decreased proliferation of tumor cells compared with tamoxifen and infected with GFP-expressing adenovirus

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)
Citing These Resources Funding Information Warranty Disclaimer, Privacy Notice, Licensing, & Copyright Send questions and comments to User Support.	last database update 04/23/2024 MGI 6.23