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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Gt(ROSA)26Sortm1(cre/ERT2)Alj
targeted mutation 1, Alexandra L Joyner
MGI:3778915
Summary 8 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cn1
Elavl1tm1Thla/Elavl1tm1Thla
Gt(ROSA)26Sortm1(cre/ERT2)Alj/Gt(ROSA)26Sor+
involves: 129 MGI:4414940
cn2
En1tm1Alj/En1tm8.1Alj
En2tm1Alj/En2tm7.1Alj
Gt(ROSA)26Sortm1(cre/ERT2)Alj/Gt(ROSA)26Sor+
involves: 129S1/Sv * 129S2/SvPas * 129S6/SvEvTac * 129X1/SvJ * Swiss Webster MGI:4421427
cn3
En1tm1Alj/En1tm8.1Alj
En2tm6Alj/En2+
Gt(ROSA)26Sortm1(cre/ERT2)Alj/Gt(ROSA)26Sor+
involves: 129S1/Sv * 129S6/SvEvTac * 129X1/SvJ * Swiss Webster MGI:4421456
cn4
En2tm1Alj/En2tm6Alj
Gt(ROSA)26Sortm1(cre/ERT2)Alj/Gt(ROSA)26Sor+
involves: 129S2/SvPas * 129S6/SvEvTac * Swiss Webster MGI:4421426
cn5
En1tm1Alj/En1tm8.1Alj
En2tm1Alj/En2tm6Alj
Gt(ROSA)26Sortm1(cre/ERT2)Alj/Gt(ROSA)26Sor+
involves: 129S2/SvPas * 129S6/SvEvTac * Swiss Webster MGI:4421433
cn6
En2tm5.1Alj/En2tm5.1Alj
Gt(ROSA)26Sortm1(cre/ERT2)Alj/Gt(ROSA)26Sor+
involves: 129S2/SvPas * Swiss Webster MGI:4421418
cn7
Egln1tm2Fong/Egln1tm2Fong
Gt(ROSA)26Sortm1(cre/ERT2)Alj/Gt(ROSA)26Sor+
involves: 129S6/SvEvTac * C57BL/6 MGI:3783535
cn8
En1tm8.1Alj/En1+
En2tm6Alj/En2+
Gt(ROSA)26Sortm1(cre/ERT2)Alj/Gt(ROSA)26Sor+
involves: 129S6/SvEvTac * Swiss Webster MGI:4421432


Genotype
MGI:4414940
cn1
Allelic
Composition
Elavl1tm1Thla/Elavl1tm1Thla
Gt(ROSA)26Sortm1(cre/ERT2)Alj/Gt(ROSA)26Sor+
Genetic
Background
involves: 129
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Elavl1tm1Thla mutation (1 available); any Elavl1 mutation (43 available)
Gt(ROSA)26Sortm1(cre/ERT2)Alj mutation (0 available); any Gt(ROSA)26Sor mutation (942 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Cachexic phenotype of Elavl1tm1Thla/Elavl1tm1Thla Gt(ROSA)26Sortm1(cre/ERT2)Alj/Gt(ROSA)26Sor+ mice observed 4 days after tamoxifen administration

mortality/aging
• 10 days after tamoxifen treatment

immune system
• following tamoxifen treatment, double positive T cells in the thymus exhibit increased apoptosis and necrosis and decreased proliferation compared with T cells from Elavl1tm1Hela homozygotes
• following tamoxifen treatment
• 65% 4 days following tamoxifen treatment
• following tamoxifen treatment
• following tamoxifen treatment, myeloid cell numbers are decreased compared to in Elavl1tm1Hela homozygotes
• 4 days following tamoxifen treatment
• 2-fold following tamoxifen treatment
• following tamoxifen treatment
• following tamoxifen treatment, early B cells exhibit increased apoptosis and necrosis and decreased proliferation compared with B cells from Elavl1tm1Hela homozygotes
• following tamoxifen treatment, early B cells exhibit increased apoptosis and necrosis and decreased proliferation compared with B cells from Elavl1tm1Hela homozygotes
• following tamoxifen treatment

hematopoietic system
• following tamoxifen treatment, double positive T cells in the thymus exhibit increased apoptosis and necrosis and decreased proliferation compared with T cells from Elavl1tm1Hela homozygotes
• following tamoxifen treatment
• bone marrow from tamoxifen-treated mice exhibits decreased myeloerythroid colonies on methylcellulose compared with bone marrow from Elavl1tm1Hela homozygotes
• following tamoxifen treatment
• following tamoxifen treatment, total bone marrow cell numbers and bone marrow cellularity of immature cells are decreased compared to in Elavl1tm1Hela homozygotes
• following tamoxifen treatment
• 65% 4 days following tamoxifen treatment
• following tamoxifen treatment
• following tamoxifen treatment, myeloid cell numbers are decreased compared to in Elavl1tm1Hela homozygotes
• 4 days following tamoxifen treatment
• 2-fold following tamoxifen treatment
• following tamoxifen treatment
• following tamoxifen treatment, early B cells exhibit increased apoptosis and necrosis and decreased proliferation compared with B cells from Elavl1tm1Hela homozygotes
• following tamoxifen treatment, early B cells exhibit increased apoptosis and necrosis and decreased proliferation compared with B cells from Elavl1tm1Hela homozygotes

digestive/alimentary system
• 2 to 3 days following tamoxifen treatment, mice exhibit massive villus atrophy and disruption of the epithelial architecture unlike Elavl1tm1Hela homozygotes
• disrupted following tamoxifen treatment
• following tamoxifen treatment, goblet cells are lost unlike in Elavl1tm1Hela homozygotes
• following tamoxifen treatment, proliferation of crypt progenitor cells is decreased while apoptosis is increased unlike in Elavl1tm1Hela homozygotes
• following tamoxifen treatment, apoptosis of cells in the lamina propria and epithelial cells of the colon is increased compared to in Elavl1tm1Hela homozygotes
• 2 to 3 days following tamoxifen treatment, mice exhibit massive villus atrophy unlike Elavl1tm1Hela homozygotes
• 2 to 4 days following tamoxifen treatment
• 2 to 4 days following tamoxifen treatment the proximal intestine is devoid of food suggesting intestinal blockage

growth/size/body
• following tamoxifen treatment

cellular
• following tamoxifen treatment, goblet cells are lost unlike in Elavl1tm1Hela homozygotes
• following tamoxifen treatment, early B cells exhibit increased apoptosis and necrosis and decreased proliferation compared with B cells from Elavl1tm1Hela homozygotes
• following tamoxifen treatment, double positive T cells in the thymus exhibit increased apoptosis and necrosis and decreased proliferation compared with T cells from Elavl1tm1Hela homozygotes
• mouse embryonic fibroblasts treated with 4-hydoxytamoxifen exhibit decreased proliferation compared with similarly treated cells from Elavl1tm1Hela homozygotes

endocrine/exocrine glands
• following tamoxifen treatment, proliferation of crypt progenitor cells is decreased while apoptosis is increased unlike in Elavl1tm1Hela homozygotes
• following tamoxifen treatment




Genotype
MGI:4421427
cn2
Allelic
Composition
En1tm1Alj/En1tm8.1Alj
En2tm1Alj/En2tm7.1Alj
Gt(ROSA)26Sortm1(cre/ERT2)Alj/Gt(ROSA)26Sor+
Genetic
Background
involves: 129S1/Sv * 129S2/SvPas * 129S6/SvEvTac * 129X1/SvJ * Swiss Webster
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
En1tm1Alj mutation (2 available); any En1 mutation (32 available)
En1tm8.1Alj mutation (1 available); any En1 mutation (32 available)
En2tm1Alj mutation (1 available); any En2 mutation (104 available)
En2tm7.1Alj mutation (0 available); any En2 mutation (104 available)
Gt(ROSA)26Sortm1(cre/ERT2)Alj mutation (0 available); any Gt(ROSA)26Sor mutation (942 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• when given tamoxifen at E13.5 or E14. the hemisphere phenotype is more severe than in double mutants that do not express Cre
• when given tamoxifen at E13.5 or E14. the vermis phenotype is more severe than in double mutants that do not express Cre




Genotype
MGI:4421456
cn3
Allelic
Composition
En1tm1Alj/En1tm8.1Alj
En2tm6Alj/En2+
Gt(ROSA)26Sortm1(cre/ERT2)Alj/Gt(ROSA)26Sor+
Genetic
Background
involves: 129S1/Sv * 129S6/SvEvTac * 129X1/SvJ * Swiss Webster
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
En1tm1Alj mutation (2 available); any En1 mutation (32 available)
En1tm8.1Alj mutation (1 available); any En1 mutation (32 available)
En2tm6Alj mutation (1 available); any En2 mutation (104 available)
Gt(ROSA)26Sortm1(cre/ERT2)Alj mutation (0 available); any Gt(ROSA)26Sor mutation (942 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• when given tamoxifen at E10.5, at P21 the anterior region (lobules I-V) is reduced and the central region (lobules VI-VII) is preferentially expanded.
• when tamoxifen is given at E10.5, at P21 lobule VIII extends more laterally than normal, as do lobules I-V but only on one side




Genotype
MGI:4421426
cn4
Allelic
Composition
En2tm1Alj/En2tm6Alj
Gt(ROSA)26Sortm1(cre/ERT2)Alj/Gt(ROSA)26Sor+
Genetic
Background
involves: 129S2/SvPas * 129S6/SvEvTac * Swiss Webster
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
En2tm1Alj mutation (1 available); any En2 mutation (104 available)
En2tm6Alj mutation (1 available); any En2 mutation (104 available)
Gt(ROSA)26Sortm1(cre/ERT2)Alj mutation (0 available); any Gt(ROSA)26Sor mutation (942 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• following tamoxifen administration at E9.5 - E12.5, all or almost all display an abnormal foliation pattern similar to that in En2 null mice
• following tamoxifen administration at E9.5 - E12.5, all or almost all display an abnormal foliation pattern similar to that in En2 null mice
• following tamoxifen administration at E9.5 - E12.5, all or almost all display an abnormal foliation pattern similar to that in En2 null mice




Genotype
MGI:4421433
cn5
Allelic
Composition
En1tm1Alj/En1tm8.1Alj
En2tm1Alj/En2tm6Alj
Gt(ROSA)26Sortm1(cre/ERT2)Alj/Gt(ROSA)26Sor+
Genetic
Background
involves: 129S2/SvPas * 129S6/SvEvTac * Swiss Webster
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
En1tm1Alj mutation (2 available); any En1 mutation (32 available)
En1tm8.1Alj mutation (1 available); any En1 mutation (32 available)
En2tm1Alj mutation (1 available); any En2 mutation (104 available)
En2tm6Alj mutation (1 available); any En2 mutation (104 available)
Gt(ROSA)26Sortm1(cre/ERT2)Alj mutation (0 available); any Gt(ROSA)26Sor mutation (942 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• tamoxifen treatment at E9.5, but not at E10.5, results in death at birth

nervous system
• when tamoxifen treated at E10.5, at P2 proliferation is similar in the anterior and central lobules, unlike in wild-type mice
• a major deletion of the midbrain is seen when tamoxifen is given at E9.5, but not when given at E10.5
• a major deletion of the medial cerebellum is seen when tamoxifen is given at E9.5 but not when given at E10.5
• when given tamoxifen at E10.5, at P14 the distinction between the vermis and the hemispheres is not apparent
• when given tamoxifen at E10.5, at E12.5 the cerebellar primordium is reduced in size
• when tamoxifen treated at E10.5, development of the vermis prepyramidal fissure is delayed and the order of fissure initiation is altered
• when given tamoxifen at E10.5, at P14 cerebellar foliation patterns are disrupted
• when given tamoxifen at E13.5 or E14.5, foliation defects in adults are less severe than when tamoxifen is given at E10.5
• when tamoxifen treated at E10.5, at E18.5 the thickness of the external granule layer was 1.5-2 times greater in the mutants than in wild types
• when tamoxifen treated at E10.5, at P2 the thickness of the external granule layer is similar in the lobules IV/V and VI unlike in wild-type mice
• when tamoxifen treated at E10.5, at P2 thickness is similar to that at E18.5 and thinner than in the controls.
• when given tamoxifen at E13.5 or E14.5, in adults the preculminate fissure is absent (between I-II and III) as lobules I-III are fused
• when given tamoxifen at E10.5, at P3 the depth of the primary fissure is increased relative to the intercrural fissure
• when given tamoxifen at E10.5, at P14 the anterior region (lobules I-V) is reduced and the central region (lobules VI-VII) is preferentially expanded
• when tamoxifen is given at E10.5, at P14, unlike in wild type, the remnants of lobules I-V extend into the hemispheres
• when tamoxifen is given at E10.5, at P14 remnants of the vermis, specific anterior and posterior regions, are maintained more laterally than in wild-type
• when given tamoxifen at E10.5, at P14 in some mutants lobule VIII is diminished more medially than lobule IX rather than the opposite as occurs in wild-type
• when tamoxifen treated at E10.5, at P2 lobules I - V are smaller and lobule VI is much larger than in wild-type
• when tamoxifen is given at E13.5 or E14.5, in adults lobule VIII is shifted posterior and fused with dorsal lobule IX
• when tamoxifen treated at E10.5, at P2 the thickness of the external granule layer is similar in the lobules IV/V and VI unlike in wild-type mice
• when given tamoxifen at E10.5, at P14 lobules VI-VII occupy a greater proportion of the vermis than in wild-type
• when given tamoxifen at E10.5, at P14 lobules VIII-IX occupy a smaller proportion of the vermis than in wild-type
• when given tamoxifen at E13.5 or E14.5, in adults lobules I-III are fused into one lobule
• when tamoxifen treated at E10.5, at P2 overall size of each region, and thus total number of cells, is greatly reduced
• when given tamoxifen, at P3 the cerebellum is smaller compared to controls

cellular
• when tamoxifen treated at E10.5, at P2 proliferation is similar in the anterior and central lobules, unlike in wild-type mice




Genotype
MGI:4421418
cn6
Allelic
Composition
En2tm5.1Alj/En2tm5.1Alj
Gt(ROSA)26Sortm1(cre/ERT2)Alj/Gt(ROSA)26Sor+
Genetic
Background
involves: 129S2/SvPas * Swiss Webster
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
En2tm5.1Alj mutation (1 available); any En2 mutation (104 available)
Gt(ROSA)26Sortm1(cre/ERT2)Alj mutation (0 available); any Gt(ROSA)26Sor mutation (942 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
N
• following tamoxifen administration at E9.5 - E12.5, foliation pattern is rescued




Genotype
MGI:3783535
cn7
Allelic
Composition
Egln1tm2Fong/Egln1tm2Fong
Gt(ROSA)26Sortm1(cre/ERT2)Alj/Gt(ROSA)26Sor+
Genetic
Background
involves: 129S6/SvEvTac * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Egln1tm2Fong mutation (1 available); any Egln1 mutation (21 available)
Gt(ROSA)26Sortm1(cre/ERT2)Alj mutation (0 available); any Gt(ROSA)26Sor mutation (942 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• reach 90% lethality by about 90 days after tamoxifen treatment
• mice begin to die 40 days after tamoxifen treatment with 90% lethality by about 90 days after treatment

cardiovascular system
• about 6 weeks after tamoxifen treatment major vascular branches of the ear are dilated and reddened and medium-sized blood vessels are scattered in the subendocardial layer
• after tamoxifen treatment, liver sections show an increase in large vessels
• after tamoxifen treatment the trachea contains more capillaries which are more branched and enlarged
• after tamoxifen treatment capillaries amid cardiac fibers are enlarged as are capillaries in the renal glomeruli
• dilated vessels and enlarged glomerular capillaries after tamoxifen treatment
• sinusoids are dilated after tamoxifen treatment
• after tamoxifen treatment the size and number of blood vessels in the lung is increased
• after tamoxifen treatment increased numbers of blood vessels are seen in the dermal and subcutaneous layers of the ear, the trachea contains more capillaries which are more branched and enlarged, more medium sized vessels are present in the subendocardial layer of the heart, and more vessels are seen in the liver and brain
• about 6 weeks after tamoxifen treatment vessels in the ear, trachea, heart, lung, kidney cortex and glomeruli, liver
• in the lung vessel dilation is accompanied by packed erythrocytes
• in the liver central veins are about 4-times larger than in controls

hematopoietic system
• significant increase in hematopoietic stem cells in the liver and spleen after tamoxifen treatment
• increase in the number of colonies formed by spleen and liver cells in a methylcellulose colony forming assay after tamoxifen treatment
• after tamoxifen treatment
• dramatic increase after tamoxifen treatment
• after tamoxifen treatment
• after tamoxifen treatment
• increase in the number of erythroid progenitor and myeloid cells after tamoxifen treatment

liver/biliary system
• more strongly colored than controls after tamoxifen treatment
• sinusoids are dilated after tamoxifen treatment

renal/urinary system
• dilated vessels and enlarged glomerular capillaries after tamoxifen treatment
• glomeruli are enlarged and their capillaries are dilated

homeostasis/metabolism
• 230-fold increase in serum erythropoietin levels within 2 weeks of tamoxifen treatment

immune system
• after tamoxifen treatment
• increase in the number of erythroid progenitor and myeloid cells after tamoxifen treatment

respiratory system
• after tamoxifen treatment the size and number of blood vessels in the lung is increased

integument
• erythemia is more apparent than in Egln2tm1Fong Egln3tm1Fong double homozygotes

growth/size/body




Genotype
MGI:4421432
cn8
Allelic
Composition
En1tm8.1Alj/En1+
En2tm6Alj/En2+
Gt(ROSA)26Sortm1(cre/ERT2)Alj/Gt(ROSA)26Sor+
Genetic
Background
involves: 129S6/SvEvTac * Swiss Webster
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
En1tm8.1Alj mutation (1 available); any En1 mutation (32 available)
En2tm6Alj mutation (1 available); any En2 mutation (104 available)
Gt(ROSA)26Sortm1(cre/ERT2)Alj mutation (0 available); any Gt(ROSA)26Sor mutation (942 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• when tamoxifen is given at E13.5 or E14.5 in adult preculminate (between I-II and III) as lobules I-III are fused
• when tamoxifen is given at E10.5, at P14 lobules VI-VII occupied a greater proportion of the vermis than in wild-type
• when tamoxifen is given at E10.5, at P14 lobules VIII-IX occupied a smaller proportion of the vermis than in wild-type
• when tamoxifen is given at E13.5 or E14.5 in adult the vermis has a foliation pattern that was a milder version than that observed in tamoxifen at 10.5 mutants
• when tamoxifen is given at E13.5 or E14.5 in adult posterior region lobule VIII is shifted posterior and fused with dorsal lobule IX.
• when tamoxifen is given at E13.5 or E14.5 in adult lobules I-V and VIII/IX of the vermis were present more laterally than normal tamoxifen at E13.5 or E14.5 in adult lobules I-III were fused into one lobule





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