About   Help   FAQ
Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Msx2tm1Bero
targeted mutation 1, Benoit Robert
MGI:2676049
Summary 6 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cn1
Msx1tm1Bero/Msx1tm1Bero
Msx2tm1Bero/Msx2tm1Yvla
Taglntm2(cre)Yec/Tagln+
involves: 129P2/OlaHsd * 129S2/SvPas * 129S6/SvEvTac * NMRI MGI:5297709
cx2
Msx1tm1Bero/Msx1tm1Bero
Msx2tm1Bero/Msx2tm1Bero
involves: 129 * 129P2/OlaHsd * C57BL/6 * C57BL/6J MGI:2676082
cx3
Msx1tm1Bero/Msx1tm1Bero
Msx2tm1Bero/Msx2tm1Bero
involves: 129/Sv * 129P2/OlaHsd MGI:5613192
cx4
Msx1tm2.1(cre/ERT2)Bero/Msx1tm2.1(cre/ERT2)Bero
Msx2tm1Bero/Msx2tm1Bero
involves: 129/Sv * 129P2/OlaHsd * 129S2/SvPas * C57BL/6 MGI:5473569
cx5
Msx1tm1Bero/Msx1tm1Bero
Msx2tm1Bero/Msx2tm1Yvla
involves: 129/Sv * BALB/c * C57BL/6 * SJL MGI:3797245
cx6
Msx1tm1Bero/Msx1tm1Bero
Msx2tm1Bero/Msx2tm1Bero
involves: 129/Sv * C57BL/6 * NMRI MGI:3582224


Genotype
MGI:5297709
cn1
Allelic
Composition
Msx1tm1Bero/Msx1tm1Bero
Msx2tm1Bero/Msx2tm1Yvla
Taglntm2(cre)Yec/Tagln+
Genetic
Background
involves: 129P2/OlaHsd * 129S2/SvPas * 129S6/SvEvTac * NMRI
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Msx1tm1Bero mutation (1 available); any Msx1 mutation (18 available)
Msx2tm1Bero mutation (1 available); any Msx2 mutation (23 available)
Msx2tm1Yvla mutation (0 available); any Msx2 mutation (23 available)
Taglntm2(cre)Yec mutation (1 available); any Tagln mutation (26 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cardiovascular system
• superficial temporal artery is more branched than in controls
• at E11.5, carotid artery (CA) overbranching is observed
• vertebral artery (VA) caliber is increased relative to controls
• number of smooth muscle actin-positive cells in CA is half that observed in controls
• in the head, aneurysms are frequently observed
• in the head, hemorrhages are frequently observed

muscle
• number of smooth muscle actin-positive cells in CA is half that observed in controls

nervous system
• in the head, hemorrhages are frequently observed




Genotype
MGI:2676082
cx2
Allelic
Composition
Msx1tm1Bero/Msx1tm1Bero
Msx2tm1Bero/Msx2tm1Bero
Genetic
Background
involves: 129 * 129P2/OlaHsd * C57BL/6 * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Msx1tm1Bero mutation (1 available); any Msx1 mutation (18 available)
Msx2tm1Bero mutation (1 available); any Msx2 mutation (23 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• resorption observed at E10.5 and E11.5, incomplete penetrance

embryo
• small embryo size at E10.5-E11.5
• seen in some embryos

growth/size/body
• small embryo size at E10.5-E11.5

nervous system
• seen in some embryos
• small and abnormal brain
• observed in some cases, encompassing the posterior mesencephalon and the rhombencephalon




Genotype
MGI:5613192
cx3
Allelic
Composition
Msx1tm1Bero/Msx1tm1Bero
Msx2tm1Bero/Msx2tm1Bero
Genetic
Background
involves: 129/Sv * 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Msx1tm1Bero mutation (1 available); any Msx1 mutation (18 available)
Msx2tm1Bero mutation (1 available); any Msx2 mutation (23 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
growth/size/body
• at E9.5 - E11.5

embryo
• at E9.5 - E11.5
• expression analysis indicates that the dorsal progenitor pool 1 cells are not specified and that the proportion of dorsal progenitor 3 cells is increased at E10.5

nervous system
• expression analysis indicates that the dorsal progenitor pool 1 cells are not specified and that the proportion of dorsal progenitor 3 cells is increased at E10.5
• at E9.5 - E11.5




Genotype
MGI:5473569
cx4
Allelic
Composition
Msx1tm2.1(cre/ERT2)Bero/Msx1tm2.1(cre/ERT2)Bero
Msx2tm1Bero/Msx2tm1Bero
Genetic
Background
involves: 129/Sv * 129P2/OlaHsd * 129S2/SvPas * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Msx1tm2.1(cre/ERT2)Bero mutation (2 available); any Msx1 mutation (18 available)
Msx2tm1Bero mutation (1 available); any Msx2 mutation (23 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• animals die during first day following birth likely from denutrition, dehydration or hypothermia

craniofacial
• general tooth agenesis observed at autopsy
• observed at autopsy
• observed at autopsy

skeleton
• general tooth agenesis observed at autopsy
• observed at autopsy

digestive/alimentary system
• observed at autopsy

hearing/vestibular/ear
• observed at autopsy

behavior/neurological
• newborns have no milk in their stomach, suggesting denutrition/dehydration might be cause of lethality

growth/size/body
• general tooth agenesis observed at autopsy
• observed at autopsy




Genotype
MGI:3797245
cx5
Allelic
Composition
Msx1tm1Bero/Msx1tm1Bero
Msx2tm1Bero/Msx2tm1Yvla
Genetic
Background
involves: 129/Sv * BALB/c * C57BL/6 * SJL
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Msx1tm1Bero mutation (1 available); any Msx1 mutation (18 available)
Msx2tm1Bero mutation (1 available); any Msx2 mutation (23 available)
Msx2tm1Yvla mutation (0 available); any Msx2 mutation (23 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging

craniofacial

digestive/alimentary system

growth/size/body




Genotype
MGI:3582224
cx6
Allelic
Composition
Msx1tm1Bero/Msx1tm1Bero
Msx2tm1Bero/Msx2tm1Bero
Genetic
Background
involves: 129/Sv * C57BL/6 * NMRI
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Msx1tm1Bero mutation (1 available); any Msx1 mutation (18 available)
Msx2tm1Bero mutation (1 available); any Msx2 mutation (23 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• double homozygotes do not survive beyond E15

limbs/digits/tail
• maturation of the apical ectodermal ridge is impaired and regression is delayed; however initiation is normal
• at E10.2 and E11.5 the apical ectodermal ridge appears shorter and more diffuse
• at E12.5 the apical ectodermal ridge remains continuos along the entire apex of the limb and appears thicker than normal
• limb bud size is reduced by about 1/3 at E10.5 to E11.5 even in somite-matched embryos
• the mesenchymal anterior domain of the limb bud is not maintained after E10.5 and all of the mesenchyme in the limb bud assumes a posterior identity
• in the anterior portion of the limb bud the normal dorsal ventral boundary is not established at E10.5
• the posterior elements are present, the medium elements are severely truncated, and the anterior elements are absent
• at E14.5 mutants only have 1 phalange while control embryos have 2
• the missing digit is always the anterior most one
• 2 out of 18 mutant forelimbs had 6 digits
• at E14.5 interdigital webbing is retained
• the posterior elements are present, the medium elements are severely truncated, and the anterior elements are absent
• at E14.5 the 3 segments of the limb are about 3/4 of the normal size
• general truncation of the anterior parts of the limbs with systematic loss of the anterior part of the zeugopod

embryo
• maturation of the apical ectodermal ridge is impaired and regression is delayed; however initiation is normal
• at E10.2 and E11.5 the apical ectodermal ridge appears shorter and more diffuse
• at E12.5 the apical ectodermal ridge remains continuos along the entire apex of the limb and appears thicker than normal
• limb bud size is reduced by about 1/3 at E10.5 to E11.5 even in somite-matched embryos
• the mesenchymal anterior domain of the limb bud is not maintained after E10.5 and all of the mesenchyme in the limb bud assumes a posterior identity
• in the anterior portion of the limb bud the normal dorsal ventral boundary is not established at E10.5

skeleton
• the posterior elements are present, the medium elements are severely truncated, and the anterior elements are absent
• the posterior elements are present, the medium elements are severely truncated, and the anterior elements are absent
• at E14.5 the scapula is about 3/4 of the normal size
• at E14.5 the pelvic girdle is about 3/4 of the normal size
• mutants lack the pubis bone corresponding to the anterior part of the pelvis





Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
Citing These Resources
Funding Information
Warranty Disclaimer, Privacy Notice, Licensing, & Copyright
Send questions and comments to User Support.
last database update
04/23/2024
MGI 6.23
The Jackson Laboratory