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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Igf1tm1Dlr
targeted mutation 1, Derek LeRoith
MGI:2152423
Summary 6 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cn1
Igf1tm1Dlr/Igf1tm1Dlr
Igfalstm1Yrb/Igfalstm1Yrb
Tg(Alb1-cre)1Dlr/?
involves: 129S4/SvJae * BALB/c * C57BL/6 * FVB/N MGI:3603650
cn2
Igf1tm1Dlr/Igf1tm1Dlr
Tg(Mx1-cre)1Cgn/0
involves: 129/Sv * C57BL/6 * CBA MGI:2176943
cn3
Igf1tm1Dlr/Igf1tm1Dlr
Tg(EIIa-cre)C5379Lmgd/0
involves: 129/Sv * C57BL/6 * FVB/N MGI:2176942
cn4
Igf1tm1Dlr/Igf1tm1Dlr
Tg(Alb1-cre)1Dlr/0
involves: 129/Sv * C57BL/6 * FVB/N MGI:2176949
cn5
Igf1tm1Dlr/Igf1tm1Dlr
Tg(Alb1-cre)1Dlr/0
involves: 129/Sv * C57BL/6J * FVB/N MGI:4430376
cn6
Igf1tm1Dlr/Igf1tm1Dlr
Tg(Serpina1e-cre/ERT)1Sykr/0
involves: 129/Sv * C57BL/6J * FVB/N MGI:4430378


Genotype
MGI:3603650
cn1
Allelic
Composition
Igf1tm1Dlr/Igf1tm1Dlr
Igfalstm1Yrb/Igfalstm1Yrb
Tg(Alb1-cre)1Dlr/?
Genetic
Background
involves: 129S4/SvJae * BALB/c * C57BL/6 * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Igf1tm1Dlr mutation (2 available); any Igf1 mutation (27 available)
Igfalstm1Yrb mutation (1 available); any Igfals mutation (33 available)
Tg(Alb1-cre)1Dlr mutation (3 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Igf1tm1Dlr/Igf1tm1Dlr Igfalstm1Yrb/Igfalstm1Yrb Tg(Alb1-cre)1Dlr/? mice exhibit reduced growth plate height

growth/size/body
• 30% reduction in total length by 2-3 weeks of age

skeleton
• reduced cortical bone thickness
• reduced trabecular bone volume and trabecular bone density
• 20% shorter at 21 days of age and 12% shorter at 6 weeks of age
• tibial growth plate height reduced by 20%
• germinal zone height increased in the tibia

limbs/digits/tail
• reduced cortical bone thickness
• reduced trabecular bone volume and trabecular bone density
• 20% shorter at 21 days of age and 12% shorter at 6 weeks of age




Genotype
MGI:2176943
cn2
Allelic
Composition
Igf1tm1Dlr/Igf1tm1Dlr
Tg(Mx1-cre)1Cgn/0
Genetic
Background
involves: 129/Sv * C57BL/6 * CBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Igf1tm1Dlr mutation (2 available); any Igf1 mutation (27 available)
Tg(Mx1-cre)1Cgn mutation (7 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
homeostasis/metabolism
N
• after induction with PiPc, 6-mo-old mice exhibit no significant differences in serum and urine creatinine levels relative to control mice
• after induction with IFN at 24-28 days of age, mice exhibit a 75% reduction in serum IGF-I levels relative to control mice, still evident at 53 days of age (J:55718)
• after induction with PiPc at 4 weeks of age, mice exhibit a 80-85% reduction in serum IGF-I levels relative to control mice, still evident at 24 months of age (J:121798)
• renal IGF-II mRNA levels are reduced by 79%, suggesting that the effects of circulating IGF-I on kidney size may be mediated by renal IGF-II; however, no differences in serum IGF-II levels are observed at 9 months (J:121798)
• after induction with PiPc, mice exhibit compensatory increased circulating GH levels relative to control mice
• after induction with PiPc, 6-mo-old mice exhibit increased 24-hr potassium excretion relative to control mice
• after induction with PiPc, 6-mo-old mice exhibit increased 24-hr sodium excretion relative to control mice

growth/size/body
N
• after induction with IFN at 24-28 days of age, mice exhibit normal postnatal body growth up to 53 days of age relative to control mice (J:55718)
• after induction with PiPc at 4 weeks of age, mice exhibit no significant differences in body weight relative to control mice, as shown at 7 and 24 months of age (J:121798)

renal/urinary system
N
• after induction with PiPc, 6-mo-old mice exhibit no significant differences in serum and urine creatinine levels, GFR, creatinine clearance, or 24-hr urine volume relative to control mice
• no glomerulosclerosis, vascular defects, mesangial sclerosis, or cortical fibrosis is observed at 24 months of age
• after induction with PiPc, 6-mo-old mice exhibit increased 24-hr potassium excretion relative to control mice
• after induction with PiPc, 6-mo-old mice exhibit increased 24-hr sodium excretion relative to control mice
• after induction with PiPc, absolute and relative kidney weight is reduced in 7- and 24-month-old mice relative to control mice

cardiovascular system
• after induction with PiPc, 7-mo-old mice exhibit increased systolic blood pressure relative to control mice




Genotype
MGI:2176942
cn3
Allelic
Composition
Igf1tm1Dlr/Igf1tm1Dlr
Tg(EIIa-cre)C5379Lmgd/0
Genetic
Background
involves: 129/Sv * C57BL/6 * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Igf1tm1Dlr mutation (2 available); any Igf1 mutation (27 available)
Tg(EIIa-cre)C5379Lmgd mutation (4 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• some perinatal mortality but many survive

growth/size/body
• 72% of control weight at 3 weeks of age, 68% at 6 weeks
• fetus at E19 or E20 weighs only 69% as much as comparable controls




Genotype
MGI:2176949
cn4
Allelic
Composition
Igf1tm1Dlr/Igf1tm1Dlr
Tg(Alb1-cre)1Dlr/0
Genetic
Background
involves: 129/Sv * C57BL/6 * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Igf1tm1Dlr mutation (2 available); any Igf1 mutation (27 available)
Tg(Alb1-cre)1Dlr mutation (3 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
normal phenotype




Genotype
MGI:4430376
cn5
Allelic
Composition
Igf1tm1Dlr/Igf1tm1Dlr
Tg(Alb1-cre)1Dlr/0
Genetic
Background
involves: 129/Sv * C57BL/6J * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Igf1tm1Dlr mutation (2 available); any Igf1 mutation (27 available)
Tg(Alb1-cre)1Dlr mutation (3 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
homeostasis/metabolism
• male mutant LID (LID, chronic liver-specific IGF-1 deficiency) mice fed a high calorie or regular diet for 8 to 10 weeks exhibit decreased serum IGF-1 levels relative to controls
• LID mice fed a high calorie for 8 to 10 weeks exhibit increased serum leptin levels compared to lean LID mice (fed a regular diet)

neoplasm
• male double mutant (LID, chronic liver-specific IGF-1 deficiency) mice on a high calorie diet for 10-14 weeks and injected with subcutaneous MC-39 murine colorectal carcinoma cell do not show the obesity-associated increase in local tumor growth compared to lean controls




Genotype
MGI:4430378
cn6
Allelic
Composition
Igf1tm1Dlr/Igf1tm1Dlr
Tg(Serpina1e-cre/ERT)1Sykr/0
Genetic
Background
involves: 129/Sv * C57BL/6J * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Igf1tm1Dlr mutation (2 available); any Igf1 mutation (27 available)
Tg(Serpina1e-cre/ERT)1Sykr mutation (0 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
homeostasis/metabolism
N
• serum adiponectin and glucose levels in obese iLID mice are comparable to lean iLID mice (iLID, inducible liver-specific IGF-1 deficiency)
• iLID mice fed a high calorie for 8 to 10 weeks and then injected with tamoxifen exhibit increased serum insulin levels compared to tamoxifen-treated lean mice (fed a regular diet)
• mutant mice (iLID, inducible liver-specific IGF-1 deficiency) fed a high calorie or regular diet for 8 to 10 weeks and then injected with tamoxifen exhibit decreased serum IGF-1 levels relative to tamoxifen-treated controls
• iLID mice fed a high calorie for 8 to 10 weeks and then injected with tamoxifen exhibit increased serum leptin levels compared to tamoxifen-treated lean mice (fed a regular diet)

neoplasm
N
• tamoxifen treatment of lean or obese mice before or after injection of MC-38 colon carcinoma cells does not alter the obesity-associated increase in tumor growth in contrast to what is observed in LID (chronic liver-specific IGF-1 deficiency) mice





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last database update
04/16/2024
MGI 6.23
The Jackson Laboratory