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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Kdm2btm1Nobu
targeted mutation 1, Nobuaki Yoshida
MGI:4950034
Summary 1 genotype
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Kdm2btm1Nobu/Kdm2btm1Nobu either: (involves: 129S/SvEv * 129P2/OlaHsd) or (involves: 129P2/OlaHsd * C57BL/6J) MGI:4950039


Genotype
MGI:4950039
hm1
Allelic
Composition
Kdm2btm1Nobu/Kdm2btm1Nobu
Genetic
Background
either: (involves: 129S/SvEv * 129P2/OlaHsd) or (involves: 129P2/OlaHsd * C57BL/6J)
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Kdm2btm1Nobu mutation (0 available); any Kdm2b mutation (219 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mice exhibiting exencephaly die shortly after birth due to central nervous system disorder unlike wild-type mice
• fewer than expected mice are present at weaning

reproductive system
• the number of spermatozoa in mutant male mice is reduced to about half of that in control males

nervous system
• at E18.5, exencephalic mice exhibit bleeding from the brain unlike wild-type mice
• at E9.5, mice exhibit a 3-fold increase in apoptosis in the neuroepithelium unlike wild-type mice
• at E14.5, mice exhibit increased neural progenitor cell proliferation compared with wild-type mice
• at E9.5 and E10.5, the neural folds remain unfused, unlike in wild-type embryos
• Background Sensitivity: on a 129P2/OlaHsd and C57BL/6 background, some mice exhibit failure of neural tube closure in the midbrain and hindbrain unlike wild-type mice
• the midbrain and hindbrain are massively expanded and everted and cover the whole brain unlike in wild-type mice
• the midbrain and hindbrain are massively expanded and everted and cover the whole brain unlike in wild-type mice

vision/eye
• mice exhibit expanded neural retina compared with wild-type mice
• in some mice at E14.5

growth/size/body
• at E9.5, mice exhibit a 3-fold increase in apoptosis in the cranial mesenchyme unlike wild-type mice
• in adult mice
• in exencephalic mice at E18.5

cellular
• the number of spermatozoa in mutant male mice is reduced to about half of that in control males
• at E9.5, mice exhibit a 3-fold increase in apoptosis in the cranial mesenchyme unlike wild-type mice
• at E9.5, mice exhibit a 3-fold increase in apoptosis in the neuroepithelium unlike wild-type mice
• at E14.5, mice exhibit increased neural progenitor cell proliferation compared with wild-type mice

limbs/digits/tail
• in some mice

cardiovascular system
• at E18.5, exencephalic mice exhibit bleeding from the brain unlike wild-type mice

embryo
• at E9.5, mice exhibit a 3-fold increase in apoptosis in the cranial mesenchyme unlike wild-type mice
• at E9.5 and E10.5, the neural folds remain unfused, unlike in wild-type embryos
• Background Sensitivity: on a 129P2/OlaHsd and C57BL/6 background, some mice exhibit failure of neural tube closure in the midbrain and hindbrain unlike wild-type mice





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last database update
05/07/2024
MGI 6.23
The Jackson Laboratory