B6;129S7-Ldlr^tm1Her/J

Stock number: 002077
Research areas: Cardiovascular Research, Metabolism Research, Mouse/Human Gene Homologs

Description

Mice homozygous for the Ldlr^tm1Her knock-out mutation have elevated serum cholesterol levels and may be useful in studies of atherosclerosis.

Detailed description

Mice homozygous for the Ldlr^tm1Her knock-out mutation have an elevated serum cholesterol level of 200-400 mg/dl and they have very high levels (>2,000 mg/dl) when fed a high fat diet. Normal serum cholesterol in the mouse is 80-100 mg/dl.

Development

The Ldlr^tm1Her mutant strain was developed in the laboratory of Dr. Robert Hammer and Dr. Joachim Herz at the Howard Hughes Medical Institute Research Laboratories, University of Texas Southwestern Medical Center at Dallas. The 129-derived AB1 ES cell line was used.

Allele

Symbol: Ldlr^tm1Her
Name: targeted mutation 1, Joachim Herz
MGI accession ID: MGI:1857212
Generation method: Targeted
Attributes: Null/Knockout
Marker symbol: Ldlr
Marker name: low density lipoprotein receptor
Chromosome: 9
Strain of origin: 129S7/SvEvBrd-Hprt⁺
Site of expression: Immunoblot analysis of liver membranes detected a truncated protein in homozygous mutant animals.
Molecular note: Insertion of a neomycin resistance cassette into exon 4. The authors predict that the targeted allele would encode a truncated non-functional protein that will not bind LDL, and that lacks a membrane spanning segment. Immunoblot analysis of liver membranes detected a truncated protein in homozygous mutant animals.
General note: When used in bone marrow transplant into Ldlr^tm1Her homozygous mice, Abca1^tm1Jdm Abcg1^tm1Dgen homozygous cells accelerate the development of atherosclerosis. (J:130777)

Phenotypic Similarity to Human Syndrome: Atherosclerosis, Susceptibility to J:29950, J:225091 in mice fed a high-cholesterol diet.