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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Nrp2tm1Mkl
targeted mutation 1, Michael Klagsbrun
MGI:2183238
Summary 4 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Nrp2tm1Mkl/Nrp2tm1Mkl C.Cg-Nrp2tm1Mkl MGI:3712943
hm2
Nrp2tm1Mkl/Nrp2tm1Mkl involves: ICR MGI:4361455
cx3
Nrp1tm1Hfu/Nrp1tm1Hfu
Nrp2tm1Mkl/Nrp2+
involves: BALB/c * C57BL/6 * CBA MGI:3712945
cx4
Nrp1tm1Hfu/Nrp1+
Nrp2tm1Mkl/Nrp2tm1Mkl
involves: BALB/c * C57BL/6 * CBA MGI:3712946


Genotype
MGI:3712943
hm1
Allelic
Composition
Nrp2tm1Mkl/Nrp2tm1Mkl
Genetic
Background
C.Cg-Nrp2tm1Mkl
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Nrp2tm1Mkl mutation (1 available); any Nrp2 mutation (88 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
N
• mice are viable, surviving up to two weeks

embryo
N
• normal yolk sac vasculature is observed in homozygotes




Genotype
MGI:4361455
hm2
Allelic
Composition
Nrp2tm1Mkl/Nrp2tm1Mkl
Genetic
Background
involves: ICR
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Nrp2tm1Mkl mutation (1 available); any Nrp2 mutation (88 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• the DiI-labeled cells do not respond to Sema3F in cultured telencephalic slices prepared from E10.5 embryos
• migration stream is not biased to either the distal or the proximal side of the Sema3F aggregates, but directed ventrally in cultured telencephalic slices prepared from E10.5 embryos
• increased number of lot cells spread over the deep medial region at E12.5 and E13.5
• normal surface distribution of lateral olfactory tract cells
• normal total numbers of lateral olfactory tract cells
• about twice as many lateral olfactory tract cells are ectopically distributed over the deep layers at the restricted rostrocaudal middle level at E12.5 and E13.5

cellular
• the DiI-labeled cells do not respond to Sema3F in cultured telencephalic slices prepared from E10.5 embryos
• migration stream is not biased to either the distal or the proximal side of the Sema3F aggregates, but directed ventrally in cultured telencephalic slices prepared from E10.5 embryos
• increased number of lot cells spread over the deep medial region at E12.5 and E13.5




Genotype
MGI:3712945
cx3
Allelic
Composition
Nrp1tm1Hfu/Nrp1tm1Hfu
Nrp2tm1Mkl/Nrp2+
Genetic
Background
involves: BALB/c * C57BL/6 * CBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Nrp1tm1Hfu mutation (2 available); any Nrp1 mutation (81 available)
Nrp2tm1Mkl mutation (1 available); any Nrp2 mutation (88 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• embryos die at E10-10.5, showing longer survival thah double homozygous embryos

embryo
• yolk sacs are of normal size, but lack larger collecting vessels and contain irregular and less dense capillary networks
• vasulature of yolk sac at E10 is characterized by vessel heterogeneity, disorganization, and immaturity
• arterial and venous branching is not seen in yolk sacs at E10
• thickened blood vessels, lack of capillaries, and large avascular spaces between blood vessels are observed, with occasional dead-ended sprouts not connected to other sprouts
• much smaller than littermates; length of embryo in yolk sac is ~50% of control embryo length

growth/size/body
• much smaller than littermates; length of embryo in yolk sac is ~50% of control embryo length

cardiovascular system
• avascular regions, vessel size heterogeneity, and thickened blood vessels are observed
• outflow tract formation is abnormal
• blood vessel density in head region is slightly higher than in Npr1tm1Hfu/Npr1+; Npr2tm1Mkl /Npr2tm1Mkl embryos
• abnormal formation of dorsal aorta is observed
• yolk sacs are of normal size, but lack larger collecting vessels and contain irregular and less dense capillary networks
• vasulature of yolk sac at E10 is characterized by vessel heterogeneity, disorganization, and immaturity
• arterial and venous branching is not seen in yolk sacs at E10
• thickened blood vessels, lack of capillaries, and large avascular spaces between blood vessels are observed, with occasional dead-ended sprouts not connected to other sprouts
• multiple hemorrhages are observed in embryos at E10




Genotype
MGI:3712946
cx4
Allelic
Composition
Nrp1tm1Hfu/Nrp1+
Nrp2tm1Mkl/Nrp2tm1Mkl
Genetic
Background
involves: BALB/c * C57BL/6 * CBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Nrp1tm1Hfu mutation (2 available); any Nrp1 mutation (81 available)
Nrp2tm1Mkl mutation (1 available); any Nrp2 mutation (88 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• embryos die at E10-10.5, showing longer survival thah double homozygous embryos

embryo
• yolk sacs are of normal size, but lack larger collecting vessels and contain irregular and less dense capillary networks
• vasulature of yolk sac at E10 is characterized by vessel heterogeneity, disorganization, and immaturity
• thickened blood vessels, lack of capillaries, and large avascular spaces between blood vessels are observed, with occasional dead-ended sprouts not connected to other sprouts
• arterial and venous branching is not seen in yolk sacs at E10

cardiovascular system
• embryos show severe vascular impairment at E10
• blood vessels are disorganized, heterogeneous in size, and some show thickening
• blood vessel density is low in the head region, with avascular regions in head and trunk
• small vessel sprouting is seen, but is unconnected to other sprouts and no capillary plexus is formed
• dorsal aorta is poorly formed, and outflow tract is undetectable
• yolk sacs are of normal size, but lack larger collecting vessels and contain irregular and less dense capillary networks
• vasulature of yolk sac at E10 is characterized by vessel heterogeneity, disorganization, and immaturity
• thickened blood vessels, lack of capillaries, and large avascular spaces between blood vessels are observed, with occasional dead-ended sprouts not connected to other sprouts
• arterial and venous branching is not seen in yolk sacs at E10
• multiple hemorrhages are observed in embryos at E10





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