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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Rettm1Cos
targeted mutation 1, Frank Costantini
MGI:2136894
Summary 12 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Rettm1Cos/Rettm1Cos involves: 129S/Sv * C57BL/6 MGI:4820806
hm2
Rettm1Cos/Rettm1Cos involves: 129S/SvEv MGI:5604497
hm3
Rettm1Cos/Rettm1Cos involves: 129S/SvEv * MF1 MGI:2175009
ht4
Rettm1Cos/Ret+ involves: 129S/SvEv * 129S1/Sv * 129X1/SvJ MGI:5295936
ht5
Rettm1Cos/Ret+ involves: 129S/SvEv * C57BL/6 MGI:3588575
ht6
Rettm1Cos/Rettm2(RET)Vpa involves: 129P2/OlaHsd * 129S/SvEv MGI:3609201
ht7
Rettm1Cos/Rettm2(RET)Jmi involves: 129S/Sv * C57BL/6 MGI:4820807
ht8
Rettm1Cos/Rettm2.1Cos involves: 129S/SvEv * 129S1/Sv * C57BL/6J * FVB/N * MF1 MGI:3583336
cn9
Rettm2(RET)Heno/Rettm1Cos
Tg(CAG-cre/Esr1*)5Amc/0
involves: 129S/Sv * C57BL/6 * CBA MGI:4820805
cx10
Pax2tm1Pgr/Pax2+
Rettm1Cos/Ret+
involves: 129S/SvEv * 129S1/Sv * 129X1/SvJ MGI:5295884
cx11
Rettm1Cos/Ret+
Wnt11tm1Amc/Wnt11+
involves: 129S/SvEv * 129S1/Sv * 129X1/SvJ * MF1 MGI:2665016
cx12
Rettm1Cos/Ret+
Wnt11tm1Amc/Wnt11tm1Amc
involves: 129S/SvEv * 129S1/Sv * 129X1/SvJ * MF1 MGI:2665019


Genotype
MGI:4820806
hm1
Allelic
Composition
Rettm1Cos/Rettm1Cos
Genetic
Background
involves: 129S/Sv * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rettm1Cos mutation (2 available); any Ret mutation (53 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• absence of neurofilament labeling in latissimus dorsi muscle of P0 mice
• display a nearly complete absence of the enteric ganglia throughout the entire gastrointestinal tract

renal/urinary system




Genotype
MGI:5604497
hm2
Allelic
Composition
Rettm1Cos/Rettm1Cos
Genetic
Background
involves: 129S/SvEv
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rettm1Cos mutation (2 available); any Ret mutation (53 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
endocrine/exocrine glands
N
• adrenal chromaffin cells develop normally, despite high levels of Ret expression occuring in normal development of these cells




Genotype
MGI:2175009
hm3
Allelic
Composition
Rettm1Cos/Rettm1Cos
Genetic
Background
involves: 129S/SvEv * MF1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rettm1Cos mutation (2 available); any Ret mutation (53 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• death occurred 16-24 hours after birth (J:23852)

cardiovascular system
N
• no gross abnormalities, the ventricles, atria, valves, aorta and pulmonary trunk showed no defects

digestive/alimentary system
• failure of milk to progress from the stomach to the intestine (J:23852)

renal/urinary system
• remaining kidney rudiments are dysplastic with few nephric elements (proximal and distal tubules, glomeruli, and vessels) and no recognizable medulla, cortex, or nephrogenic zone (J:23852)
• dysplastic (J:30389)
• absence of mature collecting ducts
• persistence of large regions of undifferentiated mesenchyme
• the metanephric mesenchyme did not condense by E11.5
• the metanephric mesenchyme underwent apoptosis at E12.5
• no recognizable nephrogenic zone
• rudimetary and are of similar size to the adrenal glands when present
• variable penetrance; kidneys are absent or rudimetary; both unilateral and bilateral effects were observed (J:23852)
• variable penetrance (J:30389)
• variable severity; some animals exhibited an absent ureter and kidney, while others exhibited blind ureters with no renal tissue (J:23852)
• sometimes absent or blind-ending (J:30389)
• reduced branching of the ureter
• sometimes absent (J:30389)
• sometimes blind-ending (J:30389)
• of those buds that entered the mesenchyme, the growth and branching was abnormal, if occuring at all
• when the uteric bud was present, growth was retarded
• in approximately half of the mutant embryos, the uteric bud failed to evaginate although a mesenchymal blastema and a Wollfian duct were present in metanephroi
• when the uteric bud was present, growth was retarded and either failed to enter the mesenchyme or was delayed; at E11.0, 8% of the mutant buds had entered the mesenchyme

respiratory system
• underdeveloped or collapsed lungs; likely a secondary effect of deficient amniotic fluid production by the kidneys

nervous system
• no neurons in the small or large intestine, esophagus or stomach (J:23852)
• neurons and glia were absent from the distal stomach, duodenum, small and large intestine, but not the esophagus or the proximal stomach as determined by TH, NF or MASH-1 immunoreactivity (J:30830)
• cardiac ganglion volume was 56% smaller than controls, due to a reduction in neuronal cell number
• in two of six hearts, the AV node, the AV bundle and the proximal bundle branches were devoid of cholinergic fibers
• occasionally larger than in controls
• absent as early as E12.5, while all other sympathetic ganglia were present

embryo
• the metanephric mesenchyme underwent apoptosis at E12.5
• mutant enteric crest cells were detected in the esophagus and proximal stomach, but not the rest of the gastrointestinal tract
• reduced numbers of mesonephric tubules were observed at E11.5

cellular
• the metanephric mesenchyme underwent apoptosis at E12.5
• mutant enteric crest cells were detected in the esophagus and proximal stomach, but not the rest of the gastrointestinal tract

homeostasis/metabolism
• deficient amniotic fluid production by the kidneys

muscle
• failure of milk to progress from the stomach to the intestine (J:23852)




Genotype
MGI:5295936
ht4
Allelic
Composition
Rettm1Cos/Ret+
Genetic
Background
involves: 129S/SvEv * 129S1/Sv * 129X1/SvJ
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rettm1Cos mutation (2 available); any Ret mutation (53 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
renal/urinary system
• at P15, heterozygotes show a reduced mean glomerular density relative to wild-type littermates (7.25 versus 8.95 glomeruli per unit area, respectively)
• at P15, about 4% of heterozygotes exhibit unilateral renal agenesis




Genotype
MGI:3588575
ht5
Allelic
Composition
Rettm1Cos/Ret+
Genetic
Background
involves: 129S/SvEv * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rettm1Cos mutation (2 available); any Ret mutation (53 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
digestive/alimentary system
• decrease in both longitudinal and circular muscle contraction of the intestine in response to electric field stimulation

nervous system
• colon submucosal neuron size is reduced by 16%, however cell size of small bowel submucosal neurons and myenteric and submucosal neuron numbers in the small bowel and colon are normal
• the myenteric plexus has a 35% reduction in cell size in the small bowel and 34% reduction in the colon
• myenteric neuron acetylcholinesterase-stained fiber counts are reduced by 11-13%
• 70-95% reduction in substance P and VIP release

muscle
• decrease in both longitudinal and circular muscle contraction of the intestine in response to electric field stimulation




Genotype
MGI:3609201
ht6
Allelic
Composition
Rettm1Cos/Rettm2(RET)Vpa
Genetic
Background
involves: 129P2/OlaHsd * 129S/SvEv
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rettm1Cos mutation (2 available); any Ret mutation (53 available)
Rettm2(RET)Vpa mutation (0 available); any Ret mutation (53 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
renal/urinary system
• kidneys are more severely affected than in mice homozygous for Rettm2(RET)Vpa
• kidneys are more severely affected than in mice homozygous for Rettm2(RET)Vpa




Genotype
MGI:4820807
ht7
Allelic
Composition
Rettm1Cos/Rettm2(RET)Jmi
Genetic
Background
involves: 129S/Sv * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rettm1Cos mutation (2 available); any Ret mutation (53 available)
Rettm2(RET)Jmi mutation (0 available); any Ret mutation (53 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
digestive/alimentary system
• exhibited aganglionosis only in the colon, and the abnormal morphology of the enteric neuronal plexus with incomplete penetrance




Genotype
MGI:3583336
ht8
Allelic
Composition
Rettm1Cos/Rettm2.1Cos
Genetic
Background
involves: 129S/SvEv * 129S1/Sv * C57BL/6J * FVB/N * MF1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rettm1Cos mutation (2 available); any Ret mutation (53 available)
Rettm2.1Cos mutation (1 available); any Ret mutation (53 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
endocrine/exocrine glands
N
• do not exhibit ganglioneuromas, nodular chromaffin cell hyperplasia or pheochromocytomas

reproductive system
N
• males are fertile

neoplasm
N
• do not exhibit ganglioneuromas or pheochromocytomas




Genotype
MGI:4820805
cn9
Allelic
Composition
Rettm2(RET)Heno/Rettm1Cos
Tg(CAG-cre/Esr1*)5Amc/0
Genetic
Background
involves: 129S/Sv * C57BL/6 * CBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rettm1Cos mutation (2 available); any Ret mutation (53 available)
Rettm2(RET)Heno mutation (0 available); any Ret mutation (53 available)
Tg(CAG-cre/Esr1*)5Amc mutation (9 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• at E15.5 a nearly complete elimination of the enteric ganglia in the colon when treated with 4-OHT




Genotype
MGI:5295884
cx10
Allelic
Composition
Pax2tm1Pgr/Pax2+
Rettm1Cos/Ret+
Genetic
Background
involves: 129S/SvEv * 129S1/Sv * 129X1/SvJ
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Pax2tm1Pgr mutation (1 available); any Pax2 mutation (44 available)
Rettm1Cos mutation (2 available); any Ret mutation (53 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• double heterozygotes are significantly underrepresented at weaning, probably due to postnatal renal insufficiency in a subset of newborns

renal/urinary system
• at P15, double heterozygotes show a significant reduction of ~49%, 37% and 22% in mean glomerular density (4.57 glomeruli per unit area) relative to wild-type (8.95 glomeruli per unit area), single Rettm1Cos heterozygotes (7.25 glomeruli per unit area) and single Pax2tm1Pgr heterozygotes (5.79 glomeruli per unit area), respectively
• at P15, double heterozygotes show a significantly reduced kidney to body mass ratio (0.56%) relative to wild-type (0.75%) or single Rettm1Cos heterozygous (0.75%) littermates
• at E18.5, double heterozygotes show a significantly reduced kidney to body mass ratio (0.23%) relative to wild-type (0.42%) or single Rettm1Cos heterozygous (0.45%) littermates
• at E18.5, about 13% of double heterozygotes display bilateral renal agenesis
• at E18.5, about 52% of double heterozygotes display unilateral renal agenesis
• at P15, about 15% of double heterozygotes exhibit unilateral renal agenesis, suggesting postnatal death most likely due to renal hypoplasia and insufficiency
• at E18.5, the ipsilateral ureters of agenic kidney(s) are also absent
• however, the adrenal glands, bladder and genitals are still present in all instances of renal agenesis
• in culture, both E11.5 and E12.5 kidney explants show a stunted pattern of branching morphogenesis with a significantly lower number of branch points relative to wild-type and single Rettm1Cos heterozygous explants




Genotype
MGI:2665016
cx11
Allelic
Composition
Rettm1Cos/Ret+
Wnt11tm1Amc/Wnt11+
Genetic
Background
involves: 129S/SvEv * 129S1/Sv * 129X1/SvJ * MF1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rettm1Cos mutation (2 available); any Ret mutation (53 available)
Wnt11tm1Amc mutation (2 available); any Wnt11 mutation (22 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
renal/urinary system
• kidneys are 52% the size of wild-type at E18.5




Genotype
MGI:2665019
cx12
Allelic
Composition
Rettm1Cos/Ret+
Wnt11tm1Amc/Wnt11tm1Amc
Genetic
Background
involves: 129S/SvEv * 129S1/Sv * 129X1/SvJ * MF1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rettm1Cos mutation (2 available); any Ret mutation (53 available)
Wnt11tm1Amc mutation (2 available); any Wnt11 mutation (22 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
renal/urinary system
• kidneys are 44% the size of Wnt11-null kidneys and 67% the size of Ret,Wnt11 double heterozygotes
• ureteric branching is severely affected at E12.5, much mores so than in Wnt11 null embryos
• kidneys only have 2-4 ureteric buds at E12.5 compared to the normal 7 in wild-type





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last database update
04/30/2024
MGI 6.23
The Jackson Laboratory