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Phenotype Image Detail
Image
Caption Constitutive deletion of exons 2-4 of Rspo3 is embryonic lethal during E10. Images show pairs of freshly dissected, littermate embryos that were later genotyped by PCR. (a) A control E10.5 embryo shows normal forelimb (arrow) and heart (clear arrowhead) morphology, whereas a Rspo3tm1.2Jcob/Rspo3tm1.2Jcob (Rspo3-/-) embryo (b) has obvious vascular defects, including hemorrhaging (black arrowhead) and a swollen pericardial sac (clear arrowhead). The small forelimb bud (arrow) is characteristic of an early E10 embryo. (c, d) Control and mutant E10.75 embryos within yolk sac membranes. The control membrane shows obvious vascularization (arrows) while the mutant is pale (arrow) without visible blood vessels. (e, f) The E10.75 embryos from (c) to (d) after removal of embryonic membranes. The mutant (f) has an engorged pericardial sac (clear arrowhead) and small forelimb buds (arrow) and has the overall size of an early E10 embryo. A weak heartbeat was detected in this embryo. (g) A control embryo shows normal E11.5 morphology. A mutant littermate (h) is dead and shows developmental arrest at early E10, as judged by embryo size and forelimb bud morphology (arrow) (compare to (b, f)). All mutant embryos (14 of 14) dissected at E11.5 were dead at a stage similar to that in (h). All images are at the same magnification; scale bar = 1mm.
Copyright This image is from Neufeld S, Genesis 2012 Oct;50(10):741-9, and is displayed with the permission of Wiley-Blackwell, who owns the Copyright. J:188812
Associated
Alleles
Symbol Name
Rspo3tm1.2Jcob R-spondin 3; targeted mutation 1.2, John Cobb
Associated
Genotypes
Allelic Composition Genetic Background
Rspo3tm1.2Jcob/Rspo3tm1.2Jcob involves: 129S6/SvEvTac * C57BL/6 * CD-1 * SJL

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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
10/29/2024
MGI 6.24
The Jackson Laboratory