B6.Cg-Gpi1^a Thy1^a Igh^a/J

Stock number: 001317
Research areas: Immunology, Inflammation and Autoimmunity Research, Research Tools

Description

This triple congenic is useful as a cellular marker in transplantation studies in conjunction with C57BL/6J inbred mice (Igh^b, Thy1^b, Gpi1^b). Igh is a B cell specific marker, Thy1 is a T cell specific surface marker, and Gpi1 is an enzyme that is widely expressed in mouse tissues, cultured fibroblasts, and in several types of tumors.

Detailed description

This congenic strain was made by mating together, not backcrossing, three individual congenic strains carrying differential alleles already on a C57BL/6J genetic background (B6.C-Igh^a, B6.PL-Thy1^a, and B6.CAST-Gpi1^a). This triple congenic is useful as a cellular marker in transplantation studies in conjunction with C57BL/6J inbred mice (Igh^b, Thy1^b, Gpi1^b). Igh is a B cell specific marker, Thy1 is a T cell specific surface marker, and Gpi1 is an enzyme that is widely expressed in mouse tissues, cultured fibroblasts, and in several types of tumors.

Homozygous mice exhibit ^a haplotype in peripheral blood [view data; July 2020].

Development

A 32 SNP (single nucleotide polymorphism) panel analysis, with 27 markers covering all 19 chromosomes and the X chromosome, as well as 5 markers that distinguish between the C57BL/6J and C57BL/6N substrains, was performed on the rederived living colony at The Jackson Laboratory Repository. While the 27 markers throughout the genome suggested a C57BL/6 genetic background, 1 of 5 markers that determine C57BL/6J from C57BL/6N were found to be segregating. These data suggest the mice sent to The Jackson Laboratory Repository were on a C57BL/6N genetic background.

Allele

Symbol: Thy1^a
Name: a variant
MGI accession ID: MGI:3579311
Generation method: Not Applicable
Marker symbol: Thy1
Marker name: thymus cell antigen 1, theta
Chromosome: 9
Strain of origin: Not Applicable
Site of expression: The Thy1 locus determines a surface antigen present on cells of the thymus, a number of mouse leukemias, brain, and in lesser amounts on lymph node and spleen cells.
Molecular note: The allele Thy1^a determines an antigenic specificity, Thy-1.1, found in the AKR and RF strains.
General note:

The Thy1 locus determines a surface antigen present on cells of the thymus, a number of mouse leukemias, brain, and in lesser amounts on lymph node and spleen cells. The allele Thy1^a determines an antigenic specificity, Thy-1.1, found in the AKR and RF strains; the allele Thy1^b determines an antigenic specificity, Thy-1.2, found in the C3HeB/Fe and many other strains (J:5243, J:5012, J:4469). The Thy1 antigen is probably present on all T lymphocytes and absent from all B lymphocytes, and it thus serves as a valuable T-cell marker (J:5243). It is very widely used in experiments designed to determine the distribution and function of T-cells. Thy1 specifies a T-cell surface glycoprotein, T25, with a molecular weight of 25 kDa (J:5707). The protein appears to be anchored in the cell membrane by a lipid that is either phosphotidylinositol or closely related to it (J:12016). Thy1 may function in the cell membrane as a signal transduction molecule (J:8333). The Thy1 locus, or possibly a gene closely linked to it, controls quantitative expression of a protein that is the same size as Thy1 and is expressed on thymus and brain but not on lymph node and spleen cells (J:7900).

Allele

Symbol: Gpi1^a
Name: a variant
MGI accession ID: MGI:2177271
Generation method: Not Applicable
Marker symbol: Gpi1
Marker name: glucose phosphate isomerase 1
Chromosome: 7
Strain of origin: Not Applicable
Molecular note: This allele determines a slower migrating variant of the encoded enzyme and occurs in the wild and in strains 101/H, A/HeJ, AKR/J, BALB/cJ, C57BR/cdJ, C58/J, CE/J, DBA/2J, DE/J, DW/J, LP/J, MA/J, NZB, PL/J, P/J, RARF, RF/J, SJL/J, ST/bJ, and 129/J. Sequencing analysis identified four nucleotide differences between this allele and Gpi1^b. Two differences are silent, while a third difference at position nucleotide position 282 predicts an aspartate for the a allele and an asparagine for the b allele at amino acid position 94. A fourth difference in the 3' untranslated region was also noted.

Allele

MGI accession ID: MGI:96442
Marker symbol: Igh
Marker name: immunoglobulin heavy chain complex
Chromosome: 12