VISTA (human):COMP (mouse) (rec.) (His)

V-type Immunoglobulin Domain-containing Suppressor of T Cell Activation; Platelet Receptor Gi24; Stress-induced Secreted Protein-1; Sisp-1; V-set Domain-containing Immunoregulatory Receptor

1mg/ml after reconstitution

32160000

<0.01EU/µg purified protein (LAL test).

solid

Lyophilized. Contains PBS.

After reconstitution, prepare aliquots and store at -20°C.Avoid freeze/thaw cycles.Centrifuge lyophilized vial before opening and reconstitution.PBS containing at least 0.1% BSA should be used for further dilutions.

Recombinant protein. The extracellular domain of human VISTA (aa 33-194) is fused at the C-terminus to the domain of the mouse cartilage oligomeric matrix protein (COMP) (aa 28-72) and a His Tag. Source/Host: HEK 293 cells. Purity: >95% (SDS-PAGE). Lyophilized. Contains PBS. Human VISTA is a 55 to 65kDa type I Ig membrane protein with the extracellular domain homologous to PD-L1. VISTA is mainly expressed on hematopoietic tissues (spleen, thymus and bone marrow) and on myeloid cells with lower expression on CD4+ and CD8+ T cells. VISTA is a new negative checkpoint regulator that potently suppresses T cell activation. Overexpression of VISTA on tumors inhibits the protective anti-tumor immunity and blockade of VISTA enhances antitumor immunity in multiple tumor models. VISTA on APC delivers negative signaling to T cells via a yet-to-identify binding partner on T cells. Recently, it has been reported that the recombinant VISTA protein needs to be multimerized to be active as soluble ligand. The protein VISTA (human):COMP (mouse) (with the extracellular domain of VISTA (human) fused to the pentamerization domain from the cartilage oligomeric matrix protein (COMP)), but not VISTA-Fc, functions as an immunosuppressive agonist in vivo inhibiting the proliferation of CD4+ T cells.

~40-55kDa (SDS-PAGE) and >500kDa (Size Exclusion Chromatography (SEC))

Q9H7M9

Plastic Vial

Human VISTA is a 55 to 65kDa type I Ig membrane protein with the extracellular domain homologous to PD-L1. VISTA is mainly expressed on hematopoietic tissues (spleen, thymus and bone marrow) and on myeloid cells with lower expression on CD4+ and CD8+ T cells. VISTA is a new negative checkpoint regulator that potently suppresses T cell activation. Overexpression of VISTA on tumors inhibits the protective anti-tumor immunity and blockade of VISTA enhances antitumor immunity in multiple tumor models. VISTA on APC delivers negative signaling to T cells via a yet-to-identify binding partner on T cells. Recently, it has been reported that the recombinant VISTA protein needs to be multimerized to be active as soluble ligand. The protein VISTA (human):COMP (mouse) (with the extracellular domain of VISTA (human) fused to the pentamerization domain from the cartilage oligomeric matrix protein (COMP)), but not VISTA-Fc, functions as an immunosuppressive agonist in vivo inhibiting the proliferation of CD4+ T cells.

>95% (SDS-PAGE)

The extracellular domain of human VISTA (aa 33-194) is fused at the C-terminus to the domain of the mouse cartilage oligomeric matrix protein (COMP) (aa 28-72) and to a His-tag.

HEK 293 cells

His

Non-hazardous

Other Proteins

12352202

Stable for at least 6 months after receipt when stored at -20°C.