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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Isl1tm2Gan
targeted mutation 2, Lin Gan
MGI:3797783
Summary 4 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cn1
Isl1tm1Gan/Isl1tm2Gan
Tg(Six3-cre)69Frty/?
involves: 129S6/SvEvTac * C57BL/6 * DBA/2 MGI:3797794
cn2
Isl1tm2Gan/Isl1tm2Gan
Tg(Six3-cre)69Frty/?
involves: 129S6/SvEvTac * C57BL/6 * DBA/2 MGI:3797795
cn3
Isl1tm2Gan/Isl1tm2Gan
Pou4f2tm1(ALPP)Whk/Pou4f2tm2Whk
Tg(Six3-cre)69Frty/?
involves: 129S6/SvEvTac * C57BL/6 * DBA/2 MGI:3797796
cn4
Isl1tm1Gan/Isl1tm2Gan
Pou4f2tm1(ALPP)Whk/Pou4f2tm2Whk
Tg(Six3-cre)69Frty/?
involves: 129S6/SvEvTac * C57BL/6 * DBA/2 MGI:3797797


Genotype
MGI:3797794
cn1
Allelic
Composition
Isl1tm1Gan/Isl1tm2Gan
Tg(Six3-cre)69Frty/?
Genetic
Background
involves: 129S6/SvEvTac * C57BL/6 * DBA/2
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Isl1tm1Gan mutation (0 available); any Isl1 mutation (33 available)
Isl1tm2Gan mutation (0 available); any Isl1 mutation (33 available)
Tg(Six3-cre)69Frty mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
vision/eye
• retinal ganglion axons fail to reach the midline at E13.5
• At E15.5, the axons in the optic nerve are less fasciculated and appear to be grouped into two bundles
• in addition, a substantial portion of retinal ganglion cells fail to send out axons or their axons do not exit the optic cup
• retinal ganglion cells expressing Pou4f2 are lost from the center of the retina to the periphery starting at E17.5
• there is a corresponding increase in the number of apoptotic cells in the ganglion cell layer starting at E16.5 and peaking at E17.5
• adult mice only have about a third the number of retinal ganglion cells as do the controls
• mice have much thinner optic nerves, optic chiasms and optic tracts

nervous system
• mice have much thinner optic nerves, optic chiasms and optic tracts
• retinal ganglion axons fail to reach the midline at E13.5
• At E15.5, the axons in the optic nerve are less fasciculated and appear to be grouped into two bundles
• in addition, a substantial portion of retinal ganglion cells fail to send out axons or their axons do not exit the optic cup
• retinal ganglion cells expressing Pou4f2 are lost from the center of the retina to the periphery starting at E17.5
• there is a corresponding increase in the number of apoptotic cells in the ganglion cell layer starting at E16.5 and peaking at E17.5
• adult mice only have about a third the number of retinal ganglion cells as do the controls
• mice have much thinner optic nerves, optic chiasms and optic tracts




Genotype
MGI:3797795
cn2
Allelic
Composition
Isl1tm2Gan/Isl1tm2Gan
Tg(Six3-cre)69Frty/?
Genetic
Background
involves: 129S6/SvEvTac * C57BL/6 * DBA/2
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Isl1tm2Gan mutation (0 available); any Isl1 mutation (33 available)
Tg(Six3-cre)69Frty mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
vision/eye
• retinal ganglion axons fail to reach the midline at E13.5
• At E15.5, the axons in the optic nerve are less fasciculated and appear to be grouped into two bundles
• in addition, a substantial portion of retinal ganglion cells fail to send out axons or their axons do not exit the optic cup
• retinal ganglion cells expressing Pou4f2 are lost from the center of the retina to the periphery starting at E17.5
• there is a corresponding increase in the number of apoptotic cells in the ganglion cell layer starting at E16.5 and peaking at E17.5
• adult mice only have about a third the number of retinal ganglion cells as do the controls
• mice have much thinner optic nerves, optic chiasms and optic tracts

nervous system
• mice have much thinner optic nerves, optic chiasms and optic tracts
• retinal ganglion axons fail to reach the midline at E13.5
• At E15.5, the axons in the optic nerve are less fasciculated and appear to be grouped into two bundles
• in addition, a substantial portion of retinal ganglion cells fail to send out axons or their axons do not exit the optic cup
• retinal ganglion cells expressing Pou4f2 are lost from the center of the retina to the periphery starting at E17.5
• there is a corresponding increase in the number of apoptotic cells in the ganglion cell layer starting at E16.5 and peaking at E17.5
• adult mice only have about a third the number of retinal ganglion cells as do the controls
• mice have much thinner optic nerves, optic chiasms and optic tracts




Genotype
MGI:3797796
cn3
Allelic
Composition
Isl1tm2Gan/Isl1tm2Gan
Pou4f2tm1(ALPP)Whk/Pou4f2tm2Whk
Tg(Six3-cre)69Frty/?
Genetic
Background
involves: 129S6/SvEvTac * C57BL/6 * DBA/2
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Isl1tm2Gan mutation (0 available); any Isl1 mutation (33 available)
Pou4f2tm1(ALPP)Whk mutation (0 available); any Pou4f2 mutation (7 available)
Pou4f2tm2Whk mutation (0 available); any Pou4f2 mutation (7 available)
Tg(Six3-cre)69Frty mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
vision/eye
• retinal ganglion cells expressing Pou4f1 are severely reduced in adult retina
• adult mice only have about 5% the number of retinal ganglion cells as do the controls
• genesis of RGCs are not affected as they are present in E13.5 embryos
• the optic nerve is barely detectable in adults with only a very limited number of axon bundles present

nervous system
• retinal ganglion cells expressing Pou4f1 are severely reduced in adult retina
• adult mice only have about 5% the number of retinal ganglion cells as do the controls
• genesis of RGCs are not affected as they are present in E13.5 embryos
• the optic nerve is barely detectable in adults with only a very limited number of axon bundles present




Genotype
MGI:3797797
cn4
Allelic
Composition
Isl1tm1Gan/Isl1tm2Gan
Pou4f2tm1(ALPP)Whk/Pou4f2tm2Whk
Tg(Six3-cre)69Frty/?
Genetic
Background
involves: 129S6/SvEvTac * C57BL/6 * DBA/2
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Isl1tm1Gan mutation (0 available); any Isl1 mutation (33 available)
Isl1tm2Gan mutation (0 available); any Isl1 mutation (33 available)
Pou4f2tm1(ALPP)Whk mutation (0 available); any Pou4f2 mutation (7 available)
Pou4f2tm2Whk mutation (0 available); any Pou4f2 mutation (7 available)
Tg(Six3-cre)69Frty mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
vision/eye
• retinal ganglion cells expressing Pou4f1 are severely reduced in adult retina
• adult mice only have about 5% the number of retinal ganglion cells as do the controls
• genesis of RGCs are not affected as they are present in E13.5 embryos
• the optic nerve is barely detectable in adults with only a very limited number of axon bundles present

nervous system
• retinal ganglion cells expressing Pou4f1 are severely reduced in adult retina
• adult mice only have about 5% the number of retinal ganglion cells as do the controls
• genesis of RGCs are not affected as they are present in E13.5 embryos
• the optic nerve is barely detectable in adults with only a very limited number of axon bundles present





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last database update
05/14/2024
MGI 6.23
The Jackson Laboratory