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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Tgfb1tm1Rif
targeted mutation 1, Daniel B Rifkin
MGI:3820285
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Tgfb1tm1Rif/Tgfb1tm1Rif either: (involves: 129) or (involves: 129S/SvEv * C57BL/6) MGI:3828276
hm2
Tgfb1tm1Rif/Tgfb1tm1Rif Not Specified MGI:3820286


Genotype
MGI:3828276
hm1
Allelic
Composition
Tgfb1tm1Rif/Tgfb1tm1Rif
Genetic
Background
either: (involves: 129) or (involves: 129S/SvEv * C57BL/6)
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Tgfb1tm1Rif mutation (0 available); any Tgfb1 mutation (34 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• 50% of mice die within 30 days of birth, possibly from thrombi in the right atria
• 20% of mice die within 120 days
• mice with less multi-organ inflammation live longer

growth/size/body
• body weights are 25-35% less than controls at 4 and 12 weeks of age

immune system
• no Langerhans cells are present in the back skin epidermis of 21 week old mice
• mice develop multi-organ inflammation to varying degrees depending on the individual
• mice with less inflammation tend to live longer and develop less tumors
• in general, inflammation in these mice are less severe than those observed in Tgfb1 null homozygotes
• inflammatory infiltrate is observed in the heart
• inflammatory infiltrate is found in the lamina propria and surrounding crypts
• inflammation in the large intestine is first observable 5 weeks after birth
• inflammation in the cecum is first observable 5 weeks after birth
• inflammatory infiltrate is found in the lamina propria and surrounding crypts
• inflammation in the rectum is first observable 5 weeks after birth
• inflammation in the small intestine is first observable 5 weeks after birth
• inflammation in the stomach is first observable 5 weeks after birth
• inflammation occurs around large blood vessels and large airways

neoplasm
• 40% of mice develop neoplasms by 8 weeks of age
• tumor development correlates with severity of multi-organ inflammation
• 10% of mice develop anal carcinomas
• terminal colon/rectal adenocarcinomas develop in 8% of mice
• terminal colon/rectal adenocarcinomas develop in 8% of mice
• gastric papillomas are observed in the forestomach of about 24% of mice
• are observed in the glandular stomach of about 8% of mice

digestive/alimentary system
• higher number of stomach and rectum epithelial cells are actively dividing compared to controls
• 10% of mice develop anal carcinomas
• terminal colon/rectal adenocarcinomas develop in 8% of mice
• terminal colon/rectal adenocarcinomas develop in 8% of mice
• gastric papillomas are observed in the forestomach of about 24% of mice
• are observed in the glandular stomach of about 8% of mice
• inflammatory infiltrate is found in the lamina propria and surrounding crypts
• inflammation in the large intestine is first observable 5 weeks after birth
• inflammation in the cecum is first observable 5 weeks after birth
• inflammatory infiltrate is found in the lamina propria and surrounding crypts
• inflammation in the rectum is first observable 5 weeks after birth
• inflammation in the small intestine is first observable 5 weeks after birth
• inflammation in the stomach is first observable 5 weeks after birth

cardiovascular system
• inflammatory infiltrate is observed in the heart

respiratory system
• inflammation occurs around large blood vessels and large airways

hematopoietic system
• no Langerhans cells are present in the back skin epidermis of 21 week old mice




Genotype
MGI:3820286
hm2
Allelic
Composition
Tgfb1tm1Rif/Tgfb1tm1Rif
Genetic
Background
Not Specified
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Tgfb1tm1Rif mutation (0 available); any Tgfb1 mutation (34 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• phenotype is stated to be very similar, though with less severity, to that of Tgfb1tm1N and Tgfb1tm1Doe homozygotes; however no data are presented





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