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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Eomestm1Rob
targeted mutation 1, Elizabeth J Robertson
MGI:3774027
Summary 7 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Eomestm1Rob/Eomestm1Rob involves: 129S/SvEv MGI:3775731
cn2
Eomestm1Rob/Eomestm1.1Rob
Gt(ROSA)26Sortm1Sor/Gt(ROSA)26Sor+
Edil3Tg(Sox2-cre)1Amc/Edil3+
involves: 129S/SvEv * 129S4/SvJae * C57BL/6 * CBA MGI:3775735
cn3
Eomestm1Rob/Eomestm1.1Rob
Tg(T-cre)1Lwd/0
involves: 129S/SvEv * C3H * C57BL/6 * CBA MGI:3775734
cn4
Eomestm1Rob/Eomes+
Nodaltm1Rob/Nodal+
Edil3Tg(Sox2-cre)1Amc/Edil3+
involves: 129S/SvEv * C57BL/6 * CBA MGI:3775737
cn5
Eomestm1Rob/Eomestm1Rob
Sox1tm1(cre)Take/0
involves: 129S/SvEv * C57BL/6 * CBA MGI:3808022
cn6
Eomestm1Rob/Eomestm2.1Rob
Edil3Tg(Sox2-cre)1Amc/Edil3+
involves: 129S/SvEv * C57BL/6 * CBA MGI:4399139
cn7
Eomestm1Rob/Eomestm1.1Rob
Edil3Tg(Sox2-cre)1Amc/Edil3+
involves: 129S/SvEv * C57BL/6 * CBA MGI:3775733


Genotype
MGI:3775731
hm1
Allelic
Composition
Eomestm1Rob/Eomestm1Rob
Genetic
Background
involves: 129S/SvEv
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Eomestm1Rob mutation (0 available); any Eomes mutation (41 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
normal phenotype
• animals are recovered in normal numbers at weaning; mice are fertile and show no overt abnormalities




Genotype
MGI:3775735
cn2
Allelic
Composition
Eomestm1Rob/Eomestm1.1Rob
Gt(ROSA)26Sortm1Sor/Gt(ROSA)26Sor+
Edil3Tg(Sox2-cre)1Amc/Edil3+
Genetic
Background
involves: 129S/SvEv * 129S4/SvJae * C57BL/6 * CBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Edil3Tg(Sox2-cre)1Amc mutation (5 available); any Edil3 mutation (42 available)
Eomestm1.1Rob mutation (0 available); any Eomes mutation (41 available)
Eomestm1Rob mutation (0 available); any Eomes mutation (41 available)
Gt(ROSA)26Sortm1Sor mutation (8 available); any Gt(ROSA)26Sor mutation (942 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
embryo
• specification of the definitive endoderm is disrupted
• visceral endoderm fails to displace proximally at E7.5




Genotype
MGI:3775734
cn3
Allelic
Composition
Eomestm1Rob/Eomestm1.1Rob
Tg(T-cre)1Lwd/0
Genetic
Background
involves: 129S/SvEv * C3H * C57BL/6 * CBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Eomestm1.1Rob mutation (0 available); any Eomes mutation (41 available)
Eomestm1Rob mutation (0 available); any Eomes mutation (41 available)
Tg(T-cre)1Lwd mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
embryo
N
• Mendelian numbers of conditionally null embryos are recovered around E6.5




Genotype
MGI:3775737
cn4
Allelic
Composition
Eomestm1Rob/Eomes+
Nodaltm1Rob/Nodal+
Edil3Tg(Sox2-cre)1Amc/Edil3+
Genetic
Background
involves: 129S/SvEv * C57BL/6 * CBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Edil3Tg(Sox2-cre)1Amc mutation (5 available); any Edil3 mutation (42 available)
Eomestm1Rob mutation (0 available); any Eomes mutation (41 available)
Nodaltm1Rob mutation (1 available); any Nodal mutation (41 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• severely affected embryos are not recovered

embryo
• embryos with anterior axis truncations are recovered at low frequency




Genotype
MGI:3808022
cn5
Allelic
Composition
Eomestm1Rob/Eomestm1Rob
Sox1tm1(cre)Take/0
Genetic
Background
involves: 129S/SvEv * C57BL/6 * CBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Eomestm1Rob mutation (0 available); any Eomes mutation (41 available)
Sox1tm1(cre)Take mutation (1 available); any Sox1 mutation (13 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
behavior/neurological
• increased exploratory behavior in the open field test
• enhanced aggressiveness upon handling
• male mutants mutilated or killed pups
• significantly reduced grip strength

nervous system
• enhanced cell death in the dentate migration stream
• fraction of callosal axons are misrouted
• the typical input-related patterning in Barrel cortex was strongly diminished
• significant decrease of nonventricular surface proliferation during cortical development
• expression of subventricular zone (SVZ) markers were reduced indicating about 25% decrease of proliferating cells in the mutant SVZ throughout development
• neurogenesis in the dentate gyrus was completely absent
• nerurogenesis in th subependymal zone of adult mutants appeared normal
• despite normal body weight, mutant brains showed a markedly reduced brain size
• the size of the cortex and the olfactory bulbs was markedly reduced at birth
• the contralateral projecting fibers from olfactory nuclei and temporal lobes which forms the anterior commissure were absent
• the infrapyramidal blade did not develop
• cortical layers II-IV thickness is reduced
• the mitral cell layer in the olfactory bulb is absent

cellular
• enhanced cell death in the dentate migration stream
• fraction of callosal axons are misrouted
• the typical input-related patterning in Barrel cortex was strongly diminished
• significant decrease of nonventricular surface proliferation during cortical development
• expression of subventricular zone (SVZ) markers were reduced indicating about 25% decrease of proliferating cells in the mutant SVZ throughout development
• neurogenesis in the dentate gyrus was completely absent
• nerurogenesis in th subependymal zone of adult mutants appeared normal




Genotype
MGI:4399139
cn6
Allelic
Composition
Eomestm1Rob/Eomestm2.1Rob
Edil3Tg(Sox2-cre)1Amc/Edil3+
Genetic
Background
involves: 129S/SvEv * C57BL/6 * CBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Edil3Tg(Sox2-cre)1Amc mutation (5 available); any Edil3 mutation (42 available)
Eomestm1Rob mutation (0 available); any Eomes mutation (41 available)
Eomestm2.1Rob mutation (0 available); any Eomes mutation (41 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Eomestm1Rob/Eomestm2.1Rob Edil3Tg(Sox2-cre)1Amc/0 embryos fail to form the mesoderm cell layer and are blocked in gastrulation

embryo
• mice are blocked in gastrulation
• epiblast cells fails to undergo the epithelial to mesenchyme transition and to form a distinctive mesodermal cell layer unlike in wild-type mice
• unlike in wild-type mice, the primitive streak is populated by nascent mesoderm




Genotype
MGI:3775733
cn7
Allelic
Composition
Eomestm1Rob/Eomestm1.1Rob
Edil3Tg(Sox2-cre)1Amc/Edil3+
Genetic
Background
involves: 129S/SvEv * C57BL/6 * CBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Edil3Tg(Sox2-cre)1Amc mutation (5 available); any Edil3 mutation (42 available)
Eomestm1.1Rob mutation (0 available); any Eomes mutation (41 available)
Eomestm1Rob mutation (0 available); any Eomes mutation (41 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
embryo
• by late headfold stages, embryos have multiple cystic epiblast invaginations and completely lack a discrete mesoderm layer
• at E7.5, there is complete absence of mesodermal cells between the visceral endoderm and the epiblast
• mutant embryos display abnormal thickening of the primitive streak at E7.0, resulting in an abnormal embryo shape
• there is accumulation of cells with mesenchymal morphology in the primitive streak





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