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Phenotypes Associated with This Genotype
Genotype
MGI:3762379
Allelic
Composition
Rspo2tm1Nuv/Rspo2tm1Nuv
Genetic
Background
involves: 129 * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rspo2tm1Nuv mutation (0 available); any Rspo2 mutation (19 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• the Mendelian ratio is normal from E9.5 to E18.5; however, no pups are found after birth

embryo
• aboral mesenchymal cells of the first branchial arch exhibit increased apoptosis
• however, mesenchymal cell proliferation is normal
• at E10 - E10.5, expression of several marker genes is reduced
• at E11.5, the AER in the hindlimbs are absent or less organized with reduced numbers of epithelial cells

limbs/digits/tail
• absence of ossification of the most distal phalangeal bones of the forelimbs
• severely stunted on the hindlimbs
• stunting is more severe on the left hindlimb than on the right hindlimb
• on the hindlimbs but not the forelimbs
• severely stunted
• stunting is more severe on the left hindlimb than on the right hindlimb
• severely stunted
• stunting is more severe on the left hindlimb than on the right hindlimb
• anterior-posterior patterning regulated by Shh is disrupted in the left hindlimbs and to a lesser extent in the right hindlimbs
• significant increase in apoptosis of mesenchymal cells within the posterior region of the hindlimbs
• however, cell proliferation is unchanged
• at E10 - E10.5, expression of several marker genes is reduced
• at E11.5, the AER in the hindlimbs are absent or less organized with reduced numbers of epithelial cells

respiratory system
• pulmonary vascular defects in embryos

craniofacial
• mice exhibit malformed molar alveolus of dentary
• reduced and smaller in size
• reduced and smaller in size
• the palatine processes are underdeveloped and remain unfused unlike in wild-type mice
• the zygomatic process of the maxilla is truncated, thickened, and fused with the zygomatic process of the squamosal without a connection via the jugal bone
• slightly reduced in size
• the cleft of the palatal shelves is not due to intrinsic palatal shelf defects
• at E15.5, palate shelves remain unfused
• aboral mesenchymal cells of the first branchial arch exhibit increased apoptosis
• however, mesenchymal cell proliferation is normal
• at E18.5, 71% of mice exhibit cleft secondary palate without cleft lip
• between E13.5 and E14.5, the tongue fails to move downward obstructing and delaying bilateral, horizontal elevation of the palatal shelves

renal/urinary system
• sporadic absence of discernable kidneys

cardiovascular system
• pulmonary vascular defects in embryos

digestive/alimentary system
• the palatine processes are underdeveloped and remain unfused unlike in wild-type mice
• the cleft of the palatal shelves is not due to intrinsic palatal shelf defects
• at E15.5, palate shelves remain unfused
• at E18.5, 71% of mice exhibit cleft secondary palate without cleft lip
• between E13.5 and E14.5, the tongue fails to move downward obstructing and delaying bilateral, horizontal elevation of the palatal shelves
• between E13.5 and E14.5, the tongue fails to move downward

skeleton
• mice exhibit malformed molar alveolus of dentary
• reduced and smaller in size
• reduced and smaller in size
• the palatine processes are underdeveloped and remain unfused unlike in wild-type mice
• the zygomatic process of the maxilla is truncated, thickened, and fused with the zygomatic process of the squamosal without a connection via the jugal bone
• slightly reduced in size
• absence of ossification of the most distal phalangeal bones of the forelimbs
• severely stunted on the hindlimbs
• stunting is more severe on the left hindlimb than on the right hindlimb
• severely stunted
• stunting is more severe on the left hindlimb than on the right hindlimb
• severely stunted
• stunting is more severe on the left hindlimb than on the right hindlimb
• absence of ossification of the most distal phalangeal bones of the forelimbs

integument
• absence of claws on the forelimbs and hindlimbs

hearing/vestibular/ear
• shorter and thinner

growth/size/body
• mice exhibit malformed molar alveolus of dentary
• the palatine processes are underdeveloped and remain unfused unlike in wild-type mice
• at E15.5, palate shelves remain unfused
• the cleft of the palatal shelves is not due to intrinsic palatal shelf defects
• aboral mesenchymal cells of the first branchial arch exhibit increased apoptosis
• however, mesenchymal cell proliferation is normal
• at E18.5, 71% of mice exhibit cleft secondary palate without cleft lip
• between E13.5 and E14.5, the tongue fails to move downward obstructing and delaying bilateral, horizontal elevation of the palatal shelves


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)
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last database update
04/30/2024
MGI 6.23
The Jackson Laboratory