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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Cftrtm1Hgu
targeted mutation 1, MRC Human Genetics Unit
MGI:1856710
Summary 4 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Cftrtm1Hgu/Cftrtm1Hgu CF/1Ztm MGI:3774122
hm2
Cftrtm1Hgu/Cftrtm1Hgu CF/3Ztm MGI:3774123
hm3
Cftrtm1Hgu/Cftrtm1Hgu involves: 129P2/OlaHsd MGI:3773702
hm4
Cftrtm1Hgu/Cftrtm1Hgu involves: 129P2/OlaHsd * MF1 MGI:2177531


Genotype
MGI:3774122
hm1
Allelic
Composition
Cftrtm1Hgu/Cftrtm1Hgu
Genetic
Background
CF/1Ztm
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cftrtm1Hgu mutation (0 available); any Cftr mutation (97 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Generation 27 and 28 Cftrtm1Hgu/Cftrtm1Hgu mice exhibit focal hypertrophy of goblet cells

mortality/aging
• Background Sensitivity: in early generations, 8-10% die of intestinal obstruction around weaning, survival is 76% at 3 months of age for the F8-F10 generations, early deaths are still seen at F18, but by the 25th generation, no increased mortality over wild-type is seen

digestive/alimentary system
• F28 mice show focal hypertrophy of goblet cells in the ileum, but not in the jejunum
• Background Sensitivity: 8-10% of mutants in the early generations die of intestinal obstruction at weaning, however later generations do not exhibit intestinal blockage

reproductive system
N
• males and females are fertile

cellular
• F28 mice show focal hypertrophy of goblet cells in the ileum, but not in the jejunum




Genotype
MGI:3774123
hm2
Allelic
Composition
Cftrtm1Hgu/Cftrtm1Hgu
Genetic
Background
CF/3Ztm
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cftrtm1Hgu mutation (0 available); any Cftr mutation (97 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Generation 27 and 28 Cftrtm1Hgu/Cftrtm1Hgu mice exhibit focal hypertrophy of goblet cells

mortality/aging
• Background Sensitivity: in early generations, 8-10% die of intestinal obstruction around weaning, survival is 76% at 3 months of age for the F8-F10 generations, early deaths are still seen at F18, but by the 25th generation, no increased mortality over wild-type is seen

digestive/alimentary system
• F27 mice show focal hypertrophy of goblet cells in the ileum, but not in the jejunum
• Background Sensitivity: 8-10% of mutants in the early generations die of intestinal obstruction at weaning, however later generations do not exhibit intestinal blockage

reproductive system
N
• males and females are fertile

cellular
• F27 mice show focal hypertrophy of goblet cells in the ileum, but not in the jejunum




Genotype
MGI:3773702
hm3
Allelic
Composition
Cftrtm1Hgu/Cftrtm1Hgu
Genetic
Background
involves: 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cftrtm1Hgu mutation (0 available); any Cftr mutation (97 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• mutants exposed to S. aureus exhibit increased lymphoid infiltrate and bronchiolitis compared to wild-type
• mutants exposed to B. cepacia exhibit much more severe bronchopneumonia and mixed inflammatory infiltrate than wild-type
• mutants are unable to clear Staphylococcus aureus and Burkholderia cepacia from the lungs and develop lung disease after repeated bacterial exposure

respiratory system
N
• under normal conditions (without bacterial exposure), no lung abnormalities are detected in homozygotes
• mutants exposed to S. aureus exhibit increased lymphoid infiltrate and bronchiolitis compared to wild-type
• mutants exposed to B. cepacia exhibit much more severe bronchopneumonia and mixed inflammatory infiltrate than wild-type
• mutants exhibit lung disease in response to repeated bacterial exposure
• mutants exhibit increased lymphoid infiltrate, goblet cell hyperplasia, mucus retention in the airways, bronchiolitis compared to wild-type after S. aureus infection
• mutants exhibit severe bronchopneumonia and mucus retention in the major airways, goblet cell hyperplasia and metaplasia, massive mixed inflammatory infiltrate, obliteration of smaller airways, and extensive oedema compared to wild-type after B. cepacia infection
• mutants exposed to bacteria (S. aureus and B. cepacia) exhibit increased goblet cell hyperplasia compared to wild-type

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
cystic fibrosis DOID:1485 OMIM:219700
J:24119




Genotype
MGI:2177531
hm4
Allelic
Composition
Cftrtm1Hgu/Cftrtm1Hgu
Genetic
Background
involves: 129P2/OlaHsd * MF1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cftrtm1Hgu mutation (0 available); any Cftr mutation (97 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• low incidence of lethality due to intestinal blockage; 5% die within 1 week of birth and 2% die around weaning, with 93% surviving to adulthood

digestive/alimentary system
• mild colon dilatation with abnormal mucus accumulation
• distension of epithelial cells, most prominent in the crypts
• approximately 5% incidence of fatal meconium ileus
• chloride ion transport is altered as indicated by reduced rectal and colonic/caecal potential differences

respiratory system
• one mutant at P30 showed mild focal pulmonary atelectasis, with mucus obstruction of a small bronchus
• chloride ion transport in the nose is defective as indicated by an increased nasal potential difference, but no difference is seen throughout the lower airways below the larynx
• perfusion of the trachea with a low-chloride solution shows a reduction in resultant hyperpolarization

reproductive system
• one male exhibited increased mucin in the vas deferens

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
cystic fibrosis DOID:1485 OMIM:219700
J:14614





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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