B6.129S2-Plau^tm1Mlg/J

Stock number: 002509
Product name: uPA-
Research areas: Hematological Research, Metabolism Research, Neurobiology Research

Description

These Plau knock-out mice exhibit occasional rectal prolapse and fibrin deposition.

Detailed description

Homozygotes develop normally, have a normal life span, and are poor breeders. Pups often need fostering. Rectal prolapse of a non-infectious origin develops in 9% of homozygotes and/or extensive non-healing ulcerations occur at the eyelids and around the face. Small, focal fibrin deposits are occasionally seen in the intestines and in the sinusoids of the liver, and excessive fibrin deposits are seen in ulcerated skin or prolapsed rectum. Pulmonary clot lysis is comparable to that seen in normal wildtype siblings. Endotoxin induced venous thrombosis is increased over normal wildtype siblings. Fibrin dissolution by PLAU-deficient macrophages is greatly reduced but macrophage invasion into the peritoneal cavity after thioglycollate injection is unaffected. Homozygous knockout mice have increased levels of Abeta42 and Abeta40 in plasma. Brain Abeta levels are not significantly different than controls.

In an attempt to offer alleles on well-characterized or multiple genetic backgrounds, alleles are frequently moved to a genetic background different from that on which an allele was first characterized. This is the case for the strain above. It should be noted that the phenotype could vary from that originally described. We will modify the strain description if necessary as published results become available.

Development

This targeted mutant was made in the laboratories of Dr. Richard Mulligan of the Whitehead Institute for Biomedical Sciences, Cambridge Massachusetts and of Dr. Peter Carmellet at the Center for Molecular and Vascular Biology, University of Leuven, Leuven, Belgium. A targeting vector was used which resulted in the neomycin-resistant gene (neo) replacing all but 23 amino acids of the coding sequence. Targeting was done in 129S2/SvPas-derived D3 ES cells.

Allele

Symbol: Plau^tm1Mlg
Name: targeted mutation 1, Richard C Mulligan
MGI accession ID: MGI:1857289
Generation method: Targeted
Attributes: Null/Knockout
Marker symbol: Plau
Marker name: plasminogen activator, urokinase
Chromosome: 14
Strain of origin: 129S2/SvPas
Molecular note: The gene was disrupted using neomycin resistance cassette. The vector replaced genomic sequences encompassing all but 23 amino acids of the coding sequence. Targeting was confirmed by the absence of gene specific mRNA and immunoreactivity.