InVivoMAb anti-mouse VISTA
Product Details
The 8G8 monoclonal antibody reacts with mouse V-domain Ig suppressor of T cell activation (VISTA) also known as PD-1H and B7-H5. VISTA is a 309 aa type I transmembrane glycoprotein and a member of the Ig superfamily. VISTA is expressed on naĆÆve and activated T cells, NK cells, macrophages, dendritic cells, and neutrophils. VISTA functions as a negative immune-checkpoint protein that suppresses T cell cytokine production and proliferation. VISTA is overexpressed by tumor-infiltrating lymphocytes, such as myeloid cells and regulatory T cells. The 8G8 antibody is an agonistic antibody and has demonstrated immunosuppressive properties in multiple murine models of inflammation and autoimmunity including lupus, hepatitis, arthritis, and psoriasis.Specifications
| Isotype | Armenian hamster IgG |
|---|---|
| Recommended Isotype Control(s) | InVivoMAb polyclonal Armenian hamster IgG |
| Recommended Dilution Buffer | InVivoPure pH 7.0 Dilution Buffer |
| Immunogen | Not available or unknown |
| Reported Applications | in vivo stimulation of VISTA signaling |
| Formulation |
PBS, pH 7.0 Contains no stabilizers or preservatives |
| Endotoxin |
<2EU/mg (<0.002EU/Ī¼g) Determined by LAL gel clotting assay |
| Purity |
>95% Determined by SDS-PAGE |
| Sterility | 0.2 Āµm filtration |
| Production | Purified from cell culture supernatant in an animal-free facility |
| Purification | Protein G |
| Molecular Weight | 150 kDa |
| Storage | The antibody solution should be stored at the stock concentration at 4Ā°C. Do not freeze. |
Recommended Products
-
Recommended Isotype Control(s)
InVivoMAb polyclonal Armenian hamster IgG
-
Recommended Dilution Buffer
InVivoPure pH 7.0 Dilution Buffer
in vivo stimulation of VISTA signaling
ElTanbouly MA, Zhao Y, Nowak E, Li J, Schaafsma E, Le Mercier I, Ceeraz S, Lines JL, Peng C, Carriere C, Huang X, Day M, Koehn B, Lee SW, Silva Morales M, Hogquist KA, Jameson SC, Mueller D, Rothstein J, Blazar BR, Cheng C, Noelle RJ. (2020). "VISTA is a checkpoint regulator for naĆÆve T cell quiescence and peripheral tolerance" Science 367(6475):eaay0524. PubMed
Negative checkpoint regulators (NCRs) temper the T cell immune response to self-antigens and limit the development of autoimmunity. Unlike all other NCRs that are expressed on activated T lymphocytes, V-type immunoglobulin domain-containing suppressor of T cell activation (VISTA) is expressed on naĆÆve T cells. We report an unexpected heterogeneity within the naĆÆve T cell compartment in mice, where loss of VISTA disrupted the major quiescent naĆÆve T cell subset and enhanced self-reactivity. Agonistic VISTA engagement increased T cell tolerance by promoting antigen-induced peripheral T cell deletion. Although a critical player in naĆÆve T cell homeostasis, the ability of VISTA to restrain naĆÆve T cell responses was lost under inflammatory conditions. VISTA is therefore a distinctive NCR of naĆÆve T cells that is critical for steady-state maintenance of quiescence and peripheral tolerance.
in vivo stimulation of VISTA signaling
Ceeraz S, Eszterhas SK, Sergent PA, Armstrong DA, Ashare A, Broughton T, Wang L, Pechenick D, Burns CM, Noelle RJ, Vincenti MP, Fava RA. (2017). "VISTA deficiency attenuates antibody-induced arthritis and alters macrophage gene expression in response to simulated immune complexes" Arthritis Res Ther 19(1):270. PubMed
In addition to activated T cells, the immune checkpoint inhibitor "V domain-containing Ig suppressor of T-cell activation" (VISTA) is expressed by myeloid cell types, including macrophages and neutrophils. The importance of VISTA expression by myeloid cells to antibody-induced arthritis and its potential for relevance in human disease was evaluated.
