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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Trim33tm1Los
targeted mutation 1, Regine Losson
MGI:4355864
Summary 3 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cn1
Krastm4Tyj/Krastm4Tyj
Trim33tm1Los/Trim33tm1Los
Tg(Pdx1-cre)89.1Dam/0
involves: 129S2/SvPas * 129S4/SvJae * C57BL/6 * DBA/2 MGI:4355873
cn2
Trim33tm1Los/Trim33tm1Los
Tg(Pdx1-cre)89.1Dam/0
involves: 129S2/SvPas * C57BL/6 * DBA/2 MGI:4355872
cn3
Trim33tm1Los/Trim33tm1Los
Tg(Cd4-cre)1Cwi/0
involves: 129S2/SvPas * C57BL/6 * DBA/2 MGI:4355876


Genotype
MGI:4355873
cn1
Allelic
Composition
Krastm4Tyj/Krastm4Tyj
Trim33tm1Los/Trim33tm1Los
Tg(Pdx1-cre)89.1Dam/0
Genetic
Background
involves: 129S2/SvPas * 129S4/SvJae * C57BL/6 * DBA/2
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Krastm4Tyj mutation (9 available); any Kras mutation (76 available)
Tg(Pdx1-cre)89.1Dam mutation (2 available)
Trim33tm1Los mutation (0 available); any Trim33 mutation (71 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Pancreatic tumors in Krastm4Tyj/Krastm4Tyj Trim33tm1Los/Trim33tm1Los Tg(Pdx1-cre)89.1Dam/0 and Krastm4Tyj/Krastm4Tyj Cdkn2atm4Rdp/Cdkn2atm4Rdp Tg(Pdx1-cre)89.1Dam/0 mice

endocrine/exocrine glands
• over time endocrine and exocrine components are replaced with abnormal ductal structures
• as early as 3 weeks, mice develop enlarged and dilated ductal structures resembling budding cysts unlike in wild-type mice
• with age, islets become disorganized
• as early 7 weeks
• as early 7 weeks, mice exhibit multifocal cystic lesions unlike wild-type mice
• all mice develop cysts that at 6 weeks occupy 50% of the pancreatic area unlike in wild-type mice
• cysts are composed of epithelial cells with cuboidal or cylindrical morphologies that form numerous papillary projections into the cysts
• papillary projections contain masses of small monomorphic cells with an endocrine morphology
• mice develop pancreatic intraepithelial neoplasia and tumors reminiscent of human intraductal papillary mucinous neoplasm
• however, mice do not exhibit macroscopic evidence of invasive carcinoma
• as early as 3 weeks, mice develop pancreatic intraepithelial neoplasias
• as early as 3 weeks, mice develop acute inflammation of the pancreas unlike wild-type mice

neoplasm
• mice develop pancreatic intraepithelial neoplasia and tumors reminiscent of human intraductal papillary mucinous neoplasm
• however, mice do not exhibit macroscopic evidence of invasive carcinoma
• as early as 3 weeks, mice develop pancreatic intraepithelial neoplasias

immune system
• as early as 3 weeks, mice develop acute inflammation of the pancreas unlike wild-type mice

digestive/alimentary system
• as early as 3 weeks, mice develop enlarged and dilated ductal structures resembling budding cysts unlike in wild-type mice

growth/size/body
• as early 7 weeks
• as early 7 weeks, mice exhibit multifocal cystic lesions unlike wild-type mice
• all mice develop cysts that at 6 weeks occupy 50% of the pancreatic area unlike in wild-type mice
• cysts are composed of epithelial cells with cuboidal or cylindrical morphologies that form numerous papillary projections into the cysts
• papillary projections contain masses of small monomorphic cells with an endocrine morphology




Genotype
MGI:4355872
cn2
Allelic
Composition
Trim33tm1Los/Trim33tm1Los
Tg(Pdx1-cre)89.1Dam/0
Genetic
Background
involves: 129S2/SvPas * C57BL/6 * DBA/2
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Tg(Pdx1-cre)89.1Dam mutation (2 available)
Trim33tm1Los mutation (0 available); any Trim33 mutation (71 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
endocrine/exocrine glands
N
• pancreatic development is normal




Genotype
MGI:4355876
cn3
Allelic
Composition
Trim33tm1Los/Trim33tm1Los
Tg(Cd4-cre)1Cwi/0
Genetic
Background
involves: 129S2/SvPas * C57BL/6 * DBA/2
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Tg(Cd4-cre)1Cwi mutation (10 available)
Trim33tm1Los mutation (0 available); any Trim33 mutation (71 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
N
• mice do not develop any overt autoimmunity or inflammation





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