| First Author | Takahama Y | Year | 1998 |
| Journal | Eur J Immunol | Volume | 28 |
| Issue | 7 | Pages | 2159-66 |
| PubMed ID | 9692885 | Mgi Jnum | J:67905 |
| Mgi Id | MGI:1931678 | Doi | 10.1002/(SICI)1521-4141(199807)28:07<2159::AID-IMMU2159>3.0.CO;2-B |
| Citation | Takahama Y, et al. (1998) Functional competence of T cells in the absence of glycosylphosphatidylinositol-anchored proteins caused by T cell-specific disruption of the Pig-a gene. Eur J Immunol 28(7):2159-66 |
| abstractText | T lymphocytes express various glycosylphosphatidylinositol (GPI)-anchored surface proteins, such as Thy-1 and Ly-6A. However, functional contribution of GPI-anchored proteins in T cell activation is as yet poorly understood. Here we report the generation of mutant mice deficient in the expression of GPI-anchored molecules exclusively in their T cells. We established mice carrying three identically oriented lox-P sites within the Pig-a gene, which encodes a component essential for the initial step of GPI anchor biosynthesis. These mice were crossed with mice carrying the Cre recombinase gene driven by the T cell-specific p56lck proximal promoter. Offspring carrying both the lox-P-containing Pig-a gene and the Cre transgene exhibited almost complete loss of the surface expression of GPI-anchored molecules on peripheral T cells. Interestingly, those T cells deficient in GPI-anchored molecules were capable of responding to T cell receptor stimulation in vitro and in vivo. These results indicate that T cells lacking the expression of GPI-anchored molecules are functionally competent in exerting TCR-mediated immune responses. |
