About   Help   FAQ
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 (89 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 (89 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 (84 available)
Nrp2tm1Mkl mutation (1 available); any Nrp2 mutation (89 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 (84 available)
Nrp2tm1Mkl mutation (1 available); any Nrp2 mutation (89 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





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
12/10/2024
MGI 6.24
The Jackson Laboratory