Description

GITR, Glucocorticoid-induced TNFR-related gene, is a member of the TNF receptor superfamily, also known as TNFRSF18, and AITR (in humans). It is expressed at low levels on resting T lymphocytes and at high levels on CD4⁺CD25⁺ T regulatory (Treg) cells. The expression of GITR on T cells can be upregulated upon activation. Interaction of GITR with its ligand (GITRL) has been demonstrated to augment T cell activation, proliferation, cytokine production, as well as MAPKs and NF-κB activation, and abrogate the inhibitory functions of CD4⁺CD25⁺ Treg cells. In vivo activation GITR causes development of autoimmune diseases and restores the suppressed immune responses.

Formulation

Recommended Usage

Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is ≤ 1.0 microg per 10⁶cells in 100 microL staining volume. It is recommended that the reagent be titrated for optimal performance for each application.

* Alexa Fluor® 488 has a maximum emission of 519 nm when it is excited at 488 nm.

References

1. Cobbold SP, et al. 2004. J. Immunol. 172:6003.
2. Biburger M, et al. 2008. J. Leukocyte Biol. 84:264. PubMed