CBy.129P2(B6)-Tcrd^tm1Mom/SzJ

Stock number: 008312
Product name: BALB/cBy TCRdelta-
Research areas: Hematological Research, Immunology, Inflammation and Autoimmunity Research, Research Tools

Description

Mice harboring this T-cell receptor delta chain (Tcrd) targeted mutation may be useful for studying immunology and gamma delta T-cell function.

Detailed description

Mice homozygous for the Tcrd^tm1Mom targeted mutation are viable and fertile. Gamma delta T-cell receptor expression is deficient in all adult lymphoid and epithelial organs. There is normal development of the alpha beta T-cell lineage. Patterns of CD4⁺CD8^- and CD4^-CD8⁺ alpha beta T-cells are apparently normal. Mice do not develop inflammatory bowel disease.

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

The Tcrd^tm1Mom targeted mutant strain was developed by Dr. Peter Mombaerts in the laboratory of Dr. Susumu Tonegawa at the Center for Cancer Research, Massachusetts Institute of Technology. A replacement targeting vector containing Pgk-neo was used which resulted in a 4 kb deletion encompassing most of the delta chain constant region coding sequences. The mice were then backcrossed to BALB/cByJ for nine generations.

Allele

Symbol: Tcrd^tm1Mom
Name: targeted mutation 1, Peter Mombaerts
MGI accession ID: MGI:1857257
Generation method: Targeted
Attributes: Null/Knockout
Marker symbol: Tcrd
Marker name: T cell receptor delta chain
Chromosome: 14
Strain of origin: 129P2/OlaHsd
Molecular note: A neomycin resistance gene cassette was used to disrupt the constant gene segment (designated C-delta). Flow cytometry showed that cells isolated from the lymphoid or epithelial organs of homozygous mice did not react with an anti-pan Tcrd mAb. Immunoprecipitation showed an absence of expression on the surface of thymocytes isolated from homozygous mutant embryos.