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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Mex3atm1.1(KOMP)Vlcg
targeted mutation 1.1, Velocigene
MGI:6430337
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Mex3atm1.1(KOMP)Vlcg/Mex3atm1.1(KOMP)Vlcg involves: 129S4/SvJaeSor * C57BL/6J * C57BL/6NTac MGI:6430339
cx2
Lgr5tm1(cre/ERT2)Cle/Lgr5+
Mex3atm1.1(KOMP)Vlcg/Mex3a+
involves: 129P2/OlaHsd * 129S4/SvJaeSor * C57BL/6J * C57BL/6NTac MGI:6430341


Genotype
MGI:6430339
hm1
Allelic
Composition
Mex3atm1.1(KOMP)Vlcg/Mex3atm1.1(KOMP)Vlcg
Genetic
Background
involves: 129S4/SvJaeSor * C57BL/6J * C57BL/6NTac
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Mex3atm1.1(KOMP)Vlcg mutation (0 available); any Mex3a mutation (27 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• pups start to die around 2 weeks of age, with about 60% lethality by P21-P25; pups that die develop a condition characterized by gradual weight loss, signs of dehydration and progressive lethargy
• fewer (13% vs 25% expected) than the expected number of mice are born, indicating partial embryonic lethality

growth/size/body
• about 60% of pups show gradual weight loss between P15 and P21
• pups show severe growth retardation

digestive/alimentary system
• tuft cells are almost entirely absent in the intestine
• however, goblet and enteroendocrine cell lineages are not altered
• about 60% of mice exhibit a translucent and air-filled gut tube, particularly in the ileum, caecum, and colon
• tuft cells are almost entirely absent in the intestine
• however, goblet and enteroendocrine cell lineages are not altered
• mice show altered crypt-villus architecture, particularly in the small intestine, with reduced number of crypts and smaller size
• average crypt depth is reduced
• loss of Lgr5+ intestinal stem cells
• Paneth cell expansion is inhibited in the intestine
• mice show delayed intestinal epithelial turnover
• isolated crypts grown in culture show smaller structures and a slower growth rate but are able to generate organoids

endocrine/exocrine glands
• mice show altered crypt-villus architecture, particularly in the small intestine, with reduced number of crypts and smaller size
• average crypt depth is reduced
• loss of Lgr5+ intestinal stem cells
• Paneth cell expansion is inhibited in the intestine

homeostasis/metabolism
• about 60% of pups show signs of dehydration between P15 and P21

cellular
• tuft cells are almost entirely absent in the intestine
• however, goblet and enteroendocrine cell lineages are not altered
• isolated crypts grown in culture show smaller structures and a slower growth rate but are able to generate organoids

behavior/neurological
N
• pups show normal suckling behavior
• about 60% of pups show progressive lethargy between P15 and P21

reproductive system
N
• both males and females are fertile




Genotype
MGI:6430341
cx2
Allelic
Composition
Lgr5tm1(cre/ERT2)Cle/Lgr5+
Mex3atm1.1(KOMP)Vlcg/Mex3a+
Genetic
Background
involves: 129P2/OlaHsd * 129S4/SvJaeSor * C57BL/6J * C57BL/6NTac
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Lgr5tm1(cre/ERT2)Cle mutation (1 available); any Lgr5 mutation (57 available)
Mex3atm1.1(KOMP)Vlcg mutation (0 available); any Mex3a mutation (27 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• 16% of mice exhibit postnatal lethality associated with disturbances in the intestinal epithelium

digestive/alimentary system
• disturbances in the intestinal epithelium
• loss of Lgr5+ intestinal stem cells in the intestine

endocrine/exocrine glands
• loss of Lgr5+ intestinal stem cells in the intestine





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
05/07/2024
MGI 6.23
The Jackson Laboratory