Flow cytometric analysis of Human TIGIT expression on Human PBMC. Human PBMC (peripheral blood mononuclear cells) were stained with Brilliant Violet 421™ Mouse Anti-Human CD4 Antibody and either PE Mouse IgG2a, κ Isotype Control (Left panel) or PE Mouse Anti-Human TIGIT Antibody (Right panel) at 5 μl/test. Flow cytometry and data analysis were performed using BD FACSymphony™ A1 and FlowJo™ software.
Product Details
Product Details
Product Specification
| Host | Mouse |
| Antigen | TIGIT |
| Synonyms | T-cell immunoreceptor with Ig and ITIM domains; V-set and immunoglobulin domain-containing protein 9; V-set and transmembrane domain-containing protein 3; VSIG9; VSTM3 |
| Location | Cell membrane |
| Accession | Q495A1 |
| Clone Number | S-R730 |
| Antibody Type | Mouse mAb |
| Isotype | IgG2a,k |
| Application | FCM |
| Reactivity | Hu |
| Positive Sample | Human PBMC |
| Purification | Protein A |
| Concentration | 0.2 mg/ml |
| Conjugation | PE |
| Physical Appearance | Liquid |
| Storage Buffer | PBS, 1% BSA, 0.3% Proclin 300 |
| Stability & Storage | 12 months from date of receipt / reconstitution, 2 to 8 °C as supplied |
Dilution
| application | dilution | species |
| FCM | 5μl per million cells in 100μl volume | Hu |
Background
TIGIT (T cell immunoglobulin and ITIM domain) is an inhibitory receptor expressed on lymphocytes, including natural killer (NK) cells and various subsets of T cells such as CD4+ T cells, CD8+ T cells, and regulatory T cells. It was discovered in 2009 through genome-wide analysis aiming to identify proteins containing domain structures typical for immunomodulatory receptors. TIGIT consists of one extracellular immunoglobulin variable domain, a type I transmembrane domain, and a short intracellular domain with one immunoreceptor tyrosine-based inhibitory motif (ITIM) and one immunoglobulin tyrosine tail (ITT)-like motif. Its main ligand is CD155, also known as poliovirus receptor (PVR), but it can also bind to CD112 and CD113 with lower affinity. TIGIT plays a significant role in down-regulating T cell and NK cell functions by interacting with these ligands expressed on antigen-presenting cells or tumor cells. This interaction inhibits immune cell responses at multiple steps of the cancer-immunity cycle, such as impairing T cell priming by dendritic cells, preventing tumor cell killing by NK cells and cytotoxic T cells, and enhancing the immune suppressive activity of regulatory T cells. Therefore, TIGIT has emerged as a major target in cancer immunotherapy. Several monoclonal antibodies that block the inhibitory activity of human TIGIT have been developed, and clinical trials are ongoing to investigate TIGIT blockade as a monotherapy or in combination with anti-PD1/PD-L1 antibodies for the treatment of patients with advanced solid malignancies.
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