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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Portm1Wolf
targeted mutation 1, C Roland Wolf
MGI:2656919
Summary 4 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cn1
Atp8b1tm1Nbf/Atp8b1tm1Nbf
Portm1Wolf/Portm1Wolf
Speer6-ps1Tg(Alb-cre)21Mgn/Speer6-ps1+
involves: 129P2/OlaHsd * 129S4/SvJae * C57BL/6 * DBA MGI:5618808
cn2
Portm1Wolf/Portm1Wolf
Speer6-ps1Tg(Alb-cre)21Mgn/Speer6-ps1+
involves: 129P2/OlaHsd * C57BL/6 * DBA/2 MGI:2656922
cn3
Portm2Wolf/Portm1Wolf
Speer6-ps1Tg(Alb-cre)21Mgn/Speer6-ps1+
involves: 129P2/OlaHsd * C57BL/6 * DBA/2 MGI:2656921
cn4
Abcb4tm1Bor/Abcb4tm1Bor
Portm1Wolf/Portm1Wolf
Speer6-ps1Tg(Alb-cre)21Mgn/Speer6-ps1+
involves: 129P2/OlaHsd * C57BL/6 * DBA * FVB/N MGI:5618809


Genotype
MGI:5618808
cn1
Allelic
Composition
Atp8b1tm1Nbf/Atp8b1tm1Nbf
Portm1Wolf/Portm1Wolf
Speer6-ps1Tg(Alb-cre)21Mgn/Speer6-ps1+
Genetic
Background
involves: 129P2/OlaHsd * 129S4/SvJae * C57BL/6 * DBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Atp8b1tm1Nbf mutation (2 available); any Atp8b1 mutation (78 available)
Portm1Wolf mutation (2 available); any Por mutation (80 available)
Speer6-ps1Tg(Alb-cre)21Mgn mutation (6 available); any Speer6-ps1 mutation (4 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mice fed a 0.03% cholic acid-supplemented diet directly from weaning die within a week after the start of the diet
• however, mice fed a 0.03% cholic acid-supplemented diet starting at 4 weeks of age for 4 weeks survive

growth/size/body
• mice fail to gain weight and even lose weight after starting of 0.03% cholic acid-supplemented diet at 4 weeks of age
• liver weights are increased in mice fed a cholic acid-supplemented diet for 4 weeks starting at 4 weeks of age
• mice fed a cholic acid-supplemented diet for 4 weeks starting at 4 weeks of age do not exhibit fibrosis in the liver

homeostasis/metabolism
• after 4 weeks of cholic acid-supplemented diet started at 4 weeks of age, mice exhibit enhanced plasma bilirubin levels
• after 4 weeks of cholic acid-supplemented diet started at 4 weeks of age, mice exhibit a mild elevation in plasma alanine transaminase levels
• after 4 weeks of cholic acid-supplemented diet started at 4 weeks of age, mice exhibit a mild elevation in plasma alkaline phosphatase levels
• after 4 weeks on a cholic acid-supplemented diet, plasma bile salts predominantly consist of about 90% taurocholate (TC) and about 7% tauro-beta-muricholate (TbetaMC) and a low concentration of about 0.4% of the secondary bile salt taurochenodeoxycholate (TDC) is seen compared to about 70% TC and 20% TbetaMC in single Atp8b1 homozygotes
• after 4 weeks on a cholic acid-supplemented diet, biliary bile salts predominantly consist of about 90% TC and about 9% TbetaMC compared to 55% TC and 40% TbetaMC in single Atp8b1 homozygotes
• after 4 weeks on a cholic acid-supplemented diet, bile salt hydrophobicity index of plasma is elevated but the hydrophobicity index of bile is unaltered, indicating that the plasma bile salt pool is more hydrophobic
• after 4 weeks of cholic acid-supplemented diet started at 4 weeks of age, mice exhibit a strong elevation in plasma bile salt levels

liver/biliary system
• mice fed a cholic acid-supplemented diet for 4 weeks starting at 4 weeks of age, exhibit a slight increase in bile duct proliferation
• liver weights are increased in mice fed a cholic acid-supplemented diet for 4 weeks starting at 4 weeks of age
• mice fed a cholic acid-supplemented diet for 4 weeks starting at 4 weeks of age do not exhibit fibrosis in the liver
• after 4 weeks of cholic acid-supplemented diet started at 4 weeks of age, bile flow is strongly (about 3-fold) reduced
• mice, however show normal bile salt output when fed a cholic acid-supplemented diet for 4 weeks starting at 4 weeks of age
• mice fed a cholic acid-supplemented diet for 4 weeks starting at 4 weeks of age develop a severe cholestatic phenotype with mild liver damage

endocrine/exocrine glands
• mice fed a cholic acid-supplemented diet for 4 weeks starting at 4 weeks of age, exhibit a slight increase in bile duct proliferation

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
intrahepatic cholestasis DOID:1852 J:215915




Genotype
MGI:2656922
cn2
Allelic
Composition
Portm1Wolf/Portm1Wolf
Speer6-ps1Tg(Alb-cre)21Mgn/Speer6-ps1+
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6 * DBA/2
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Portm1Wolf mutation (2 available); any Por mutation (80 available)
Speer6-ps1Tg(Alb-cre)21Mgn mutation (6 available); any Speer6-ps1 mutation (4 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
growth/size/body
• liver almost doubled in size

homeostasis/metabolism
• 65% reduction in serum cholesterol level
• 50% reduction in serum triglyceride level
• 90% reduction in bile acid volume in the gall bladder
• abnormal metabolism of acetaminophen and pentobarbital

liver/biliary system
• liver almost doubled in size
• macrovesicular fatty changes
• microvesicular fatty changes

reproductive system
• reduced fertility when mated with other null animals
• reduced litter size when mated with other null animals




Genotype
MGI:2656921
cn3
Allelic
Composition
Portm2Wolf/Portm1Wolf
Speer6-ps1Tg(Alb-cre)21Mgn/Speer6-ps1+
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6 * DBA/2
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Portm1Wolf mutation (2 available); any Por mutation (80 available)
Portm2Wolf mutation (0 available); any Por mutation (80 available)
Speer6-ps1Tg(Alb-cre)21Mgn mutation (6 available); any Speer6-ps1 mutation (4 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
growth/size/body
• liver almost doubled in size

homeostasis/metabolism
• 65% reduction in serum cholesterol
• 50% reduction in serum triglyceride level
• 90% reduction in bile acid volume in the gall bladder
• altered metabolism of pentobarbital and acetominophen

liver/biliary system
• liver almost doubled in size
• macrovesicular fatty changes
• microvesicular fatty changes

reproductive system
• reduced fertility when mated with other null animals
• reduced litter size when mated with other null animals




Genotype
MGI:5618809
cn4
Allelic
Composition
Abcb4tm1Bor/Abcb4tm1Bor
Portm1Wolf/Portm1Wolf
Speer6-ps1Tg(Alb-cre)21Mgn/Speer6-ps1+
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6 * DBA * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Abcb4tm1Bor mutation (1 available); any Abcb4 mutation (68 available)
Portm1Wolf mutation (2 available); any Por mutation (80 available)
Speer6-ps1Tg(Alb-cre)21Mgn mutation (6 available); any Speer6-ps1 mutation (4 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
endocrine/exocrine glands
• mice fed a cholic acid-supplemented diet for 8 weeks exhibit bile duct proliferation

growth/size/body
N
• mice fed a 0.03% cholic acid-supplemented diet directly from weaning exhibit normal growth
• mice fed a cholic acid-supplemented diet for 8 weeks exhibit an increased liver to body weight ratio

cellular
• mice fed a cholic acid-supplemented diet for 8 weeks exhibit increased hepatocyte proliferation

homeostasis/metabolism
• plasma bilirubin levels are mildly increased at weaning and are further increased after 8 weeks of 0.03% cholic acid-supplemented diet
• plasma alanine transaminase levels are strongly elevated after 8 weeks of cholic acid-supplemented diet
• plasma alkaline phosphatase levels are strongly elevated after 8 weeks of cholic acid-supplemented diet
• on a cholic acid-supplemented diet, plasma bile salts predominantly consist of about 90% taurocholate (TC) and about 7% tauro-beta-muricholate (TbetaMC) compared to about 60% TC and 23% TbetaMC in single Abcb4 homozygotes
• on a cholic acid-supplemented diet, biliary bile salts predominantly consist of about 90% TC and about 2.5% of the secondary bile salt taurochenodeoxycholate (TDC) compared to 75% TC and 20% TbetaMC in single Abcb4 homozygotes
• on a cholic acid-supplemented diet, the biliary hydrophobicity index, but not the plasma hydrophobicity index, is elevated, indicating a more hydrophobic biliary bile salt pool
• however, mice fed a cholic acid-supplemented diet for 8 weeks exhibit normal bile flow and biliary bile salt output
• plasma bile salt levels are strongly elevated after 8 weeks of cholic acid-supplemented diet

liver/biliary system
• mice fed a cholic acid-supplemented diet for 8 weeks exhibit increased hepatocyte proliferation
• mice fed a cholic acid-supplemented diet for 8 weeks exhibit bile duct proliferation
• mice fed a cholic acid-supplemented diet for 8 weeks exhibit an increased liver to body weight ratio
• mice fed a regular diet exhibit portal fibrosis
• mice fed a cholic acid-supplemented diet for 8 weeks exhibit portal fibrosis that is more severe than in single Abcb4 homozygotes
• mice fed a cholic acid-supplemented diet for 8 weeks develop a severe cholestatic phenotype with severe liver damage

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
intrahepatic cholestasis DOID:1852 J:215915





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last database update
11/12/2024
MGI 6.24
The Jackson Laboratory